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ASTM A 519-89 / ASME SA 519

SEAMLESS CARBON AND ALLOY STEEL MECHANICAL TUBING

1. Scope

1.1 this specification covers several frades of carbon and alloy steel seamless mechanical tubing. The frades anr listed in Tables 1, 2, and 3. When welding is used for joining the weldable mechanical tube grades, the welding procedure shall be suitable for the frade, the condition of the components, and the intended service. 

1.2 This specification covers both seamless hot-finished emchanical tubing and seamless cold-finished mechanical tubing in sizes up to and including 12 3/4 in.(322.8mm) outside diameter of rround tubes with wall thicknesses as required. 

1.3 The tubes shall be furnished in the following shapes, as specified by the purchaser:round, square, rectagular, and special sections. 

1.4 Supplementary requirements of an optional nature are provided and when desired shall be so stated in the order. 

1.5 The values stated in inch-pround units are to be regarded as the standard.




Grade   Remaks (Similar to JIS)
MT 1010 (STKM11)
MT 1015 (STKM12)
MTX1015 -
MT 1020 (STKM13)
MTX1020 -
1008 -
1010 -
1012 -
1015 -
1016 -
1017 -
1018 -
1019 -
1020 -
1021 -
1022 -
1025 -
1026 (STKM14)
1030 (STKM15)
1035 -
1040 (STKM16)
1045 -
1050 (STKM17)
1518 (STKM18)
1584 (STKM19)
1541 -
1330 -
1335 -
1340 -
1345 -
3140 -
E3310 -
4012 -
4023 -
4024 -
4027 -
4028 -
4037 -
4042 -
4047 -
4063 -
4118 -
4130 (SCM430TK)
4135 (SCM435TK)
4137 -
4140 (SCM440TK)
4142 -
4145 -
4147 -
4150 -
4320 -
4337 -
E4337 -
4340 -
E4340 -
4422 -
4427 -
4520 -
4615 -
4617 -
4620 -
4621 -
4718 -
4720 -
4815 -
4817 -
4820 -
5015 -
5046 -
5115 -
5120 (SCr420TK)
5130 -
5132 -
5135 -
5140 -
5145 -
5147 -
5150 -
5155 -
5160 -
E50100 -
E52100 -
6118 -
6120 -
6150 -
E7140 -
8115 -
8615 -
8617 -
8620 -
8622 -
8625 -
8627 -
8630 -
8637 -
8640 -
8642 -
8645 -
8650 -
8655 -
8660 -
8720 -
8735 -
8740 -
8742 -
8822 -
9255 -
9260 -
9262 -
E9310 -
9840 -
9850 -
50B40 -
50B44 -
50B46 -
50B50 -
50B60 -
51B60 -
81B45 -
86B45 -
4B15 -
94B17 -
94B30 -
94B40 -
1118 -
11L18 -
1132 -
1137 -
1141 -
1144 -
1213 -
12L14 -
1215 -



  TABLE 1 Chemical Requirementsof Low-Carbon Steels

Grade Designation Chemical Compositoin Limites %?
Carbon Range Manganese Range Phosphorus. max Sulfur. max
MT 1010 0.05 - 0.15 0.30 - 0.60 0.040 0.050
MT 1012 0.10 - 0.20 0.30 - 0.60 0.040 0.050
MT X1015 0.10 - 0.20 0.60 - 0.90 0.040 0.050
MT 1020 0.15 - 0.25 0.30 - 0.60 0.040 0.050
MT X1020 0.15 - 0.25 0.70 - 1.00 0.040 0.050





A CArbon limits are minimum and maximum on product analysis while the other elements are subject
to the tolerances shown in Table 6.



TABLE 2 Chemical Requirements of Other Carbon Steels



Grade Designation Chemical Composition Limits, %A
Carbon Range Manganese Range Phosphorus. max Sulfur. max
1008 0.10 max 0.30 - 0.50 0.040 0.050
1010 0.08 - 0.13 0.30 - 0.60 0.040 0.050
1012 0.10 - 0.15 0.30 - 0.60 0.040 0.050
1015 0.13 - 0.18 0.30 - 0.60 0.040 0.050
1016 0.13 - 0.18 0.60 - 0.90 0.040 0.050
1017 0.15 - 0.20 0.30 - 0.60 0.040 0.050
1018 0.15 - 0.20 0.60 - 0.90 0.040 0.050
1019 0.15 - 0.20 0.70 - 1.00 0.040 0.050
1020 0.18 - 0.23 0.30 - 0.60 0.040 0.050
1021 0.18 - 0.23 0.60 - 0.90 0.040 0.050
1022 0.18 - 0.23 0.70 - 1.00 0.040 0.050
1025 0.22 - 0.28 0.30 - 0.60 0.040 0.050
1026 0.22 - 0.28 0.60 - 0.90 0.040 0.050
1030 0.28 - 0.34 0.60 - 0.90 0.040 0.050
1035 0.32 - 0.38 0.60 - 0.90 0.040 0.050
1040 0.37 - 0.44 0.60 - 0.90 0.040 0.050
1045 0.43 - 0.50 0.60 - 0.90 0.040 0.050
1050 0.48 - 0.55 0.60 - 0.90 0.040 0.050
1518 0.15 - 0.21 1.10 - 1.40 0.040 0.050
1524 0.19 - 0.25 1.35 - 1.65 0.040 0.050
1541 0.36 - 0.44 1.35 - 1.65 0.040 0.050





A Subject to product analysis tolerances shown in Table 5.


TABLE 3 Chemical Requirements for Alloy Steels

NOTE 1 - The ranges and limits in this table apply to steel not exceeding 200 in.² (1290 cm²) in cross sectional area.

NOTE 2 - Small quantites of certain elements are present in alloy steels which are not specified or required. These 
elements are considered as incidental and may be present to the following maximum amounts: copper, 0.35%; nickel, 0.25%; chromium, 0.20%; molybdenum, 0.06%.

NOTE 3 - The chemical ranges and limits shown in this table are subject to the product analysis tolerances sown in Table 5.
Grade A,B Designation Chemical Composition Ranges and Limits, %
Carbon Manganese Phosphorus. C max Sulfur, C,D max Silicon Nickel Chromium Molybdenum
1330 0.28 - 0.33 1.60 - 1.90 0.040 0.040 0.15 - 0.35 ... ... ...
1335 0.33 - 0.38 1.60 -1.90 0.040 0.040 0.15 - 0.35 ... ... ...
1340 0.38 - 0.43 1.60 - 1.90 0.040 0.040 0.15 - 0.35 ... ... ...
1345 0.43 - 0.48 1.60 - 1.90 0.040 0.040 0.15 - 0.35 ... ... ...
 
3140 0.38 - 0.43 0.70 - 0.90 0.040 0.040 0.15 - 0.35 1.10 - 1.40 0.55 - 0.75 ...
 
E3310 0.08 - 0.13 0.45 - 0.60 0.025 0.025 0.15 - 0.35 3.25 - 3.75 1.40 - 1.75 ...
 
4012 0.09 - 0.14 0.75 - 1.00 0.040 0.040 0.15 - 0.35 ... ... 0.15 - 0.25
4023 0.20 - 0.25 0.70 - 0.90 0.040 0.040 0.15 - 0.35 ... ... 0.20 - 0.30
 
4024 0.20 - 0.25 0.70 - 0.90 0.040 0.035 - 0.050 0.15 - 0.35 ... ... 0.20 - 0.30
4027 0.25 - 0.30 0.70 - 0.90 0.040 0.040 0.15 - 0.35 ... ... 0.20 - 0.30
4028 0.25 - 0.30 0.70 - 0.90 0.040 0.035 - 0.050 0.15 - 0.35 ... ... 0.20 - 0.30
 
4037 0.35 - 0.40 0.70 - 0.90 0.040 0.040 0.15 - 0.35 ... ... 0.20 - 0.30
4042 0.40 - 0.45 0.70 - 0.90 0.040 0.040 0.15 - 0.35 ... ... 0.20 - 0.30
4047 0.45 - 0.50 0.70 - 0.90 0.040 0.040 0.15 - 0.35 ... ... 0.20 - 0.30
4063 0.60 - 0.67 0.75 - 1.00 0.040 0.040 0.15 - 0.35 ... ... 0.20 - 0.30
4118 0.18 - 0.23 0.70 - 0.90 0.040 0.040 0.15 - 0.35 ... 0.40 - 0.60 0.08 - 0.15
4130 0.28 - 0.33 0.40 - 0.60 0.040 0.040 0.15 - 0.35 ... 0.80 - 1.10 0.15 - 0.25
4135 0.33 - 0.38 0.70 - 0.90 0.040 0.040 0.15 - 0.35 ... 0.80 - 1.10 0.15 - 0.25
4137 0.35 - 0.40 0.75 - 1.00 0.040 0.040 0.15 - 0.35 ... 0.80 - 1.10 0.15 - 0.25
4140 0.38 - 0.43 0.75 - 1.00 0.040 0.040 0.15 - 0.35 ... 0.80 - 1.10 0.15 - 0.25
4142 0.40 - 0.45 0.75 - 1.00 0.040 0.040 0.15 - 0.35 ... 0.80 - 1.10 0.15 - 0.25
4145 0.43 - 0.48 0.75 - 1.00 0.040 0.040 0.15 - 0.35 ... 0.80 - 1.10 0.15 - 0.25
4147 0.45 - 0.50 0.75 - 1.00 0.040 0.040 0.15 - 0.35 ... 0.80 - 1.10 0.15 - 0.25
4150 0.48 - 0.53 0.75 - 1.00 0.040 0.040 0.15 - 0.35 ... 0.80 - 1.10 0.15 - 0.25
4320 0.17 - 0.22 0.45 - 0.65 0.040 0.040 0.15 - 0.35 1.65 - 2.00 0.70 - 0.90 0.20 - 0.30
4337 0.35 - 0.40 0.60 - 0.80 0.040 0.040 0.15 - 0.35 1.65 - 2.00 0.70 - 0.90 0.20 - 0.30
E4337 0.35 - 0.40 0.65 - 0.85 0.025 0.025 0.15 - 0.35 1.65 - 2.00 0.70 - 0.90 0.20 - 0.30
4340 0.38 - 0.43 0.60 - 0.80 0.040 0.040 0.15 - 0.35 1.65 - 2.00 0.70 - 0.90 0.20 - 0.30
E4340 0.38 - 0.43 0.65 - 0.85 0.025 0.025 0.15 - 0.35 1.65 - 2.00 0.70 - 0.90 0.20 - 0.30
4422 0.20 - 0.25 0.70 - 0.90 0.040 0.040 0.15 - 0.35 1.65 - 2.00 ... 0.35 - 0.45
4427 0.24 - 0.29 0.70 - 0.90 0.040 0.040 0.15 - 0.35 ... ... 0.35 - 0.45
 
4520 0.18 - 0.23 0.45 - 0.65 0.040 0.040 0.15 - 0.35 ... ... 0.45 - 0.60
 
4615 0.13 - 0.18 0.45 - 0.65 0.040 0.040 0.15 - 0.35 1.65 - 2.00 ... 0.20 - 0.30
4617 0.15 - 0.20 0.45 - 0.65 0.040 0.040 0.15 - 0.35 1.65 - 2.00 ... 0.20 - 0.30
4620 0.17 - 0.22 0.45 - 0.65 0.040 0.040 0.15 - 0.35 1.65 - 2.00 ... 0.20 - 0.30
4621 0.18 - 0.23 0.70 - 0.90 0.040 0.040 0.15 - 0.35 1.65 - 2.00 ... 0.20 - 0.30
 
4718 0.16 - 0.21 0.70 - 0.90 0.040 0.040 0.15 - 0.35 0.90 - 1.20 0.35 - 0.55 0.30 - 0.40
4720 0.17 - 0.22 0.50 - 0.70 0.040 0.040 0.15 - 0.35 0.90 - 1.20 0.35 - 0.55 0.15 - 0.25
 
4815 0.13 - 0.18 0.40 - 0.60 0.040 0.040 0.15 - 0.35 3.25 - 3.75 ... 0.20 - 0.30
4817 0.15 - 0.20 0.40 - 0.60 0.040 0.040 0.15 - 0.35 3.25 - 3.75 ... 0.20 - 0.30
4820 0.18 - 0.23 0.50 - 0.70 0.040 0.040 0.15 - 0.35 3.25 - 3.75 ... 0.20 - 0.30
 
5015 0.12 - 0.17 0.30 - 0.50 0.040 0.040 0.15 - 0.35 ... 0.30 - 0.50 ...
5046 0.43 - 0.50 0.75 - 1.00 0.040 0.040 0.15 - 0.35 ... 0.20 -.0.35 ...
 
5115 0.13 - 0.18 0.70 - 0.90 0.040 0.040 0.15 - 0.35 ... 0.70 - 0.90 ...
5120 0.17 - 0.22 0.70 - 0.90 0.040 0.040 0.15 - 0.35 ... 0.70 - 0.90 ...
5130 0.28 - 0.33 0.70 - 0.90 0.040 0.040 0.15 - 0.35 ... 0.80 - 1.10 ...
5132 0.30 - 0.35 0.60 - 0.80 0.040 0.040 0.15 - 0.35 ... 0.75 - 1.00 ...
5135 0.33 - 0.38 0.60 - 0.80 0.040 0.040 0.15 - 0.35 ... 0.80 - 1.05 ...
5140 0.38 - 0.43 0.70 - 0.90 0.040 0.040 0.15 - 0.35 ... 0.70 - 0.90 ...
5145 0.43 - 0.48 0.70 - 0.90 0.040 0.040 0.15 - 0.35 ... 0.70 - 0.90 ...
5147 0.45 - 0.52 0.70 -0.95 0.040 0.040 0.15 - 0.35 ... 0.85 - 1.15 ...
5150 0.48 - 0.53 0.70 - 0.90 0.040 0.040 0.15 - 0.35 ... 0.70 - 0.90 ...
5155 0.50 - 0.60 0.70 - 0.90 0.040 0.040 0.15 - 0.35 ... 0.70 - 0.90 ...
5160 0.55 - 0.65 0.75 - 1.00 0.040 0.040 0.15 - 0.35 ... 0.70 - 0.90 ...
E50100 0.95 - 1.10 0.25 - 0.45 0.025 0.025 0.15 - 0.35 ... 0.40 - 0.60 ...
E51100 0.95 - 1.10 0.25 - 0.45 0.025 0.025 0.15 - 0.35 ... 0.90 - 1.15 ...
E52100 0.95 - 1.10 0.25 - 0.45 0.025 0.025 0.15 - 0.35 ... 1.30 - 1.60 ...
  Vanadium
6118 0.16 - 0.21 0.50 - 0.70 0.040 0.040 0.15 - 0.35 ... 0.50 - 0.70 0.10 - 0.15
6120 0.17 - 0.22 0.70 - 0.90 0.040 0.040 0.15 - 0.35 ... 0.70 - 0.90 0.10 min
6150 0.48 - 0.53 0.70 - 0.90 0.040 0.040 0.15 - 0.35 ... 0.80 - 1.10 0.15 min
  Aluminum   Molybdenum
 
E7140 0.38 - 0.43 0.50 - 0.70 0.025 0.025 0.15 - 0.40 0.95 - 1.30 1.40 - 1.80 0.30 - 0.40
  Nickel  
8115 0.13 - 0.18 0.70 - 0.90 0.040 0.040 0.15 - 0.35 0.20 - 0.40 0.30 - 0.50 0.08 - 0.15
 
8615 0.13 - 0.18 0.70 - 0.90 0.040 0.040 0.15 - 0.35 0.40 - 0.70 0.40 - 0.60 0.15 - 0.25
8617 0.15 - 0.20 0.70 - 0.90 0.040 0.040 0.15 - 0.35 0.40 - 0.70 0.40 - 0.60 0.15 - 0.25
8620 0.18 - 0.23 0.70 - 0.90 0.040 0.040 0.15 - 0.35 0.40 - 0.70 0.40 - 0.60 0.15 - 0.25
8622 0.20 - 0.25 0.70 - 0.90 0.040 0.040 0.15 - 0.35 0.40 - 0.70 0.40 - 0.60 0.15 - 0.25
8625 0.23 - 0.28 0.70 - 0.90 0.040 0.040 0.15 - 0.35 0.40 - 0.70 0.40 - 0.60 0.15 - 0.25
8627 0.25 - 0.30 0.70 - 0.90 0.040 0.040 0.15 - 0.35 0.40 - 0.70 0.40 - 0.60 0.15 - 0.25
8630 0.28 - 0.33 0.70 - 0.90 0.040 0.040 0.15 - 0.35 0.40 - 0.70 0.40 - 0.60 0.15 - 0.25
8637 0.35 - 0.40 0.75 - 1.00 0.040 0.040 0.15 - 0.35 0.40 - 0.70 0.40 - 0.60 0.15 - 0.25
8640 0.38 - 0.43 0.75 - 1.00 0.040 0.040 0.15 - 0.35 0.40 - 0.70 0.40 - 0.60 0.15 - 0.25
8642 0.40 - 0.45 0.75 - 1.00 0.040 0.040 0.15 - 0.35 0.40 - 0.70 0.40 - 0.60 0.15 - 0.25
8645 0.43 - 0.48 0.75 - 1.00 0.040 0.040 0.15 - 0.35 0.40 - 0.70 0.40 - 0.60 0.15 - 0.25
8650 0.48 - 0.53 0.75 - 1.00 0.040 0.040 0.15 - 0.35 0.40 - 0.70 0.40 - 0.60 0.15 - 0.25
8655 0.50 - 0.60 0.75 - 1.00 0.040 0.040 0.15 - 0.35 0.40 - 0.70 0.40 - 0.60 0.15 - 0.25
8660 0.55 - 0.65 0.75 - 1.00 0.040 0.040 0.15 - 0.35 0.40 - 0.70 0.40 - 0.60 0.15 - 0.25
 
8720 0.18 - 0.23 0.70 - 0.90 0.040 0.040 0.15 - 0.35 0.40 - 0.70 0.40 - 0.60 0.20 - 0.30
9735 0.33 - 0.38 0.75 - 1.00 0.040 0.040 0.15 - 0.35 0.40 - 0.70 0.40 - 0.60 0.20 - 0.30
8740 0.38 - 0.43 0.75 - 1.00 0.040 0.040 0.15 - 0.35 0.40 - 0.70 0.40 - 0.60 0.20 - 0.30
8742 0.40 - 0.45 0.75 - 1.00 0.040 0.040 0.15 - 0.35 0.40 - 0.70 0.40 - 0.60 0.20 - 0.30
8822 0.20 - 0.25 0.75 - 1.00 0.040 0.040 0.15 - 0.35 0.40 - 0.70 0.40 - 0.60 0.30 - 0.40
 
9255 0.50 - 0.60 0.70 - 0.95 0.040 0.040 1.80 - 2.20 ... ... ...
9260 0.55 - 0.65 0.70 - 1.00 0.040 0.040 1.80 - 2.20 ... ... ...
9262 0.55 - 0.65 0.75 - 1.00 0.040 0.040 1.80 - 2.20 ... 0.25 - 0.40 ...
 
E9310 0.08 - 0.13 0.45 - 0.65 0.025 0.025 0.15 - 0.35 3.00 - 3.50 1.00 - 1.40 0.08 - 0.15
 
9840 0.38 - 0.43 0.70 - 0.90 0.040 0.040 0.15 - 0.35 0.85 - 1.15 0.70 - 0.90 0.20 - 0.30
9850 0.48 - 0.53 0.70 - 0.90 0.040 0.040 0.15 - 0.35 0.85 - 1.15 0.70 - 0.90 0.20 - 0.30
 
50B40 0.38 - 0.42 0.75 - 1.00 0.040 0.040 0.15 - 0.35 ... 0.40 - 0.60 ...
50B44 0.43 - 0.48 0.75 - 1.00 0.040 0.040 0.15 - 0.35 ... 0.40 - 0.60 ...
50B46 0.43 - 0.50 0.75 - 1.00 0.040 0.040 0.15 - 0.35 ... 0.20 - 0.35 ...
50B50 0.48 - 0.53 0.75 - 1.00 0.040 0.040 0.15 - 0.35 ... 0.40 - 0.60 ...
50B60 0.55 - 0.65 0.75 - 1.00 0.040 0.040 0.15 - 0.35 ... 0.40 - 0.60 ...
 
51B60 0.55 - 0.65 0.75 - 1.00 0.040 0.040 0.15 - 0.35 ... 0.70 - 0.90 ...
 
81B45 0.43 - 0.48 0.75 - 1.00 0.040 0.040 0.15 - 0.35 0.20 - 0.40 0.35 - 0.55 0.08 - 0.15
 
86B45 0.43 - 0.48 0.75 - 1.00 0.040 0.040 0.15 - 0.35 0.40 - 0.70 0.40 - 0.60 0.15 - 0.25
 
94B15 0.13 - 0.18 0.75 - 1.00 0.040 0.040 0.15 - 0.35 0.30 - 0.60 0.30 - 0.50 0.08 - 0.15
94B17 0.15 - 0.20 0.75 - 1.00 0.040 0.040 0.15 - 0.35 0.30 - 0.60 0.30 - 0.50 0.08 - 0.15
94B30 0.28 - 0.33 0.75 - 1.00 0.040 0.040 0.15 - 0.35 0.30 - 0.60 0.30 - 0.50 0.08 - 0.15
94B40 0.38 - 0.43 0.75 - 1.00 0.040 0.040 0.15 - 0.35 0.30 - 0.60 0.30 - 0.50 0.08 - 0.15
A Grades shown in this table with preflx letter E generally are manufactured by the basic-electric-fumace process.
All others are normally manufactured by the basic-open-hearth process but may be manufactured by the basic-electric-fumace
process with adjusternts in phosphorus and sulfur.

B Grades shown in this table with the letter B, such as 50B40, can be expected to have 0.0005% minimum born control.

C The phosphorus sulfur limitations for each process are as follows.




Basic electric furmace 0.025 max % Acid electric furmace 0.050 max %
Basic open hearth 0.040 max % Acid open hearth 0.050 max %





D Minimum and maximum sulfur content indicates resulfurized steels. 

TABLE 4 Chemical Requirements of Resulfurized or Rephosphorized, or Both, Carbon Steels



Grade Designation  
Carbon Manganese Phosphorus Sulfur Lead
1118 0.14 - 0.20 1.30 - 1.60 0.040 max 0.08 - 0.13 -
11L18 0.14 - 0.20 1.30 - 1.60 0.040 max 0.08 - 0.13 0.15 - 0.35
1132 0.27 - 0.34 1.35 - 1.65 0.040 max 0.08 - 0.13 -
1137 0.32 - 0.39 1.35 - 1.65 0.040 max 0.08 - 0.13 -
1141 0.37 - 0.45 1.35 - 1.65 0.040 max 0.08 - 0.13 -
1144 0.40 - 0.48 1.35 - 1.65 0.040 max 0.24 - 0.33 -
1213 0.13 max 0.70 - 1.10 0.07 - 0.12 0.24 - 0.33 -
12L14 0.15 max 0.85 - 1.15 0.04 - 0.09 0.26 - 0.35 0.15 - 0.35
1215 0.09 max 0.75 - 1.05 0.04 - 0.09 0.26 - 0.35 -





TABLE 5 Product Analysis Tolerances Over of Under Specified Range of Limit 

NOTE 1 - Individual determinations may bery from the specified heat limits or ranges to the extent shown in this table except that any element in a heart may not cary both above and below a specified range.

NOTE 2 - In all types of steel because of the degree to which phosphorus and sulfur segregate. product analysis for these elements is not technologically appropriate for rephosphorized or resulfurized steels unless misapplication is clearly indicated 


Carbon Steel Seamless Tubes
Element Limit. or Maximum of Specified Range. % Tolerance. Over the Maximum Limit or Underthe Minimum Limit
Under, min Over, max
Carbon to 0.25, incl 0.02 0.02
  over 0.25 to 0.55, incl 0.03 0.03
  over 0.55 0.04 0.04
Manganese to 0.90, incl 0.03 0.03
  over 0.90 to 1.65, incl 0.06 0.06
Phosphorus basic steel to 0.05, incl ... 0.008
  acid-bessemer steel to 0.12, incl ... 0.010
Sulfur to 0.06, incl ... 0.008
Silicon to 0.35, incl 0.02 0.02
  over 0.35 to 0.50, incl 0.05 0.05
Copper ... 0.02 0.02
Alloy Steel Seamless Tube
Elements Limit, or Maximum of specified Element. % Tolerance Over Maximum Limit or Under Minimum Limit for Size Ranges Shown
100 in.² (645 cm²) or less Over 100 to 200 in.² (645 to 290 cm.²), incl
Carbon to 0.30, incl 0.01 0.02
  over 0.30 to 0.75, incl 0.02 0.03
  over 0.75 0.03 0.04
Manganese to 0.90, incl 0.03 0.04
  over 0.90 to 2.10, incl 0.04 0.05
Phosphorus over max. only 0.005 0.010
Sulfur to 0.060, incl 0.005 0.010
Silicon to 0.35, incl 0.02 0.02
  over 0.35 to 2.20, incl 0.05 0.06
Nickel to 1.00, incl 0.03 0.03
  over 1.00 to 2.00, incl 0.05 0.05
  over 2.00 to 5.30, incl 0.07 0.07
  over 5.30 to 10.00, incl 0.10 0.10
Chromium to 0.90, incl 0.03 0.04
  over 0.90 to 2.10, incl 0.05 0.06
  over 2.10 to 3.99, incl 0.10 0.10
Molybdenum to 0.20, incl 0.01 0.01
  over 0.20 to 0.40, incl 0.02 0.03
  over 0.40 to 1.15, incl 0.03 0.04
Vanadium to 0.10, incl 0.01 0.01
  over 0.10 to 0.25, incl 0.02 0.02
  over 0.25 to 0.50, incl 0.03 0.03
  min value specified, check under min limit 0.01 0.01
Tungsten to 1.00, incl 0.04 0.05
  over 1.00 to 4.00, incl 0.08 0.09
Aluminum up to 0.10, incl 0.03 ...
  over 0.10 to 0.20, incl 0.04 ...
  over 0.20 to 0.30, incl 0.05 ...
  over 0.30 to 0.80, incl 0.07 ...
  over 0.80 to 1.80, incl 0.10 ...

TABLE 6 Outside Diameter Tolerances for Round Hot-Finished Tubing A,B,C


Outside Diameter Size Range. Outside Diameter Tolerance, in. (mm)
in (mm) Over Under
Up to 2.999 (76.17) 0.020 (0.51) 0.020 (0.51)
3.000 - 4.499 (76.20 - 114.27) 0.025 (0.64) 0.025 (0.64)
4.500 - 5.999 (114.30 - 152.37) 0.031 (0.79) 0.031 (0.79)
6.000 - 7.499 (152.40 - 190.47) 0.037 (0.94) 0.037 (0.94)
7.500 - 8.999 (190.50 - 228.57) 0.045 (1.14) 0.045 (1.14)
9.000 - 10.750 (228.60 - 273.05) 0.050 (1.27) 0.050 (1.27)




A Diameter tolerances are not applicable to normalized and tempered or quenched and tempered conditions.
B The common range of sizes of hot finished tubes is 1 1/2 in. (38.1 mm) to 10 3/4 in. 
(273.0 mm) outside diameter with wall thickness at least 3 % or more of outside diameter, but not less than 0.095 in.
(2.41 mm).
C Larger sizes are available; consult manufacturer for sizes and tolerances.




TABLE 7 Wall Thickness Tolerances for Round Hot-Finished Tubing


Wall Thickness Range as Percent of Outside Diameter Wall Thickness Tolerace, A percent Over and Under Norminal
Outside Diameter 2.999 in. (76.19 mm)and smaller Outside Diameter 3.000 in. (76.20 mm) to 5.999 in. (152.37 mm) Outside Diameter 6.000 in. (152.40 mm) to 10.750 in. (273.05 mm)
Under 15 12.5 10.0 10.0
15 and over 10.0 7.5 10.0





A Wall thickness tolerances may not be applicable to walls 0.19 in (5.05 mm) and less; 
consult manufacturer for wall tolerances on such tube sizes. 

TABLE 8 Outside and Inside Diameter Tolerances for Round Cold-Worked Tubing A,B,C



Outside Diameter Size Range. in. D Thermal Treatment after Final Cold Work Producing Size
Wall Thickness As Percent of Outside Diameter None, or not exceeding 1100?F Nominal Temperature Heated Above 1100?F Nominal Temperature Without Accelerated Cooling Quenched and Tempered
OD. in. D ID, in. D OD, in. D ID, in. D OD, in. D ID,in. D
Over Under Over Under Over Under Over Under Over Under Over Under
Up to 0.499 all 0.004 0.000 - - 0.005 0.002 - - 0.010 0.010 0.010 0.010
0.500 - 1.699 all 0.005 0.000 0.000 0.005 0.007 0.002 0.002 0.007 0.015 0.015 0.015 0.015
1.700 - 2.099 all 0.006 0.000 0.000 0.006 0.006 0.005 0.005 0.006 0.020 0.020 0.020 0.020
2.100 - 2.499 all 0.007 0.000 0.000 0.007 0.008 0.005 0.005 0.008 0.023 0.023 0.023 0.023
2.500 - 2.899 all 0.008 0.000 0.000 0.008 0.009 0.005 0.005 0.009 0.025 0.025 0.025 0.025
2.900 - 3.299 all 0.009 0.000 0.000 0.009 0.011 0.005 0.005 0.011 0.028 0.028 0.028 0.028
3.300 - 3.699 all 0.010 0.000 0.000 0.010 0.013 0.005 0.005 0.013 0.030 0.030 0.030 0.030
3.700 - 4.099 all 0.011 0.000 0.000 0.011 0.013 0.007 0.005 0.010 0.033 0.033 0.033 0.033
4.100 - 4.499 all 0.012 0.000 0.000 0.012 0.014 0.007 0.010 0.011 0.036 0.036 0.036 0.036
4.500 - 4.899 all 0.013 0.000 0.000 0.013 0.016 0.007 0.011 0.012 0.038 0.038 0.038 0.038
4.900 - 5.299 all 0.014 0.000 0.000 0.014 0.018 0.007 0.012 0.013 0.041 0.041 0.041 0.041
5.300 - 5.549 all 0.015 0.000 0.000 0.015 0.020 0.007 0.013 0.014 0.044 0.044 0.044 0.044
5.550 - 5.559 under 6 0.010 0.010 0.010 0.010 0.018 0.018 0.014 0.018        
  6 to 7 1/2 0.009 0.009 0.009 0.009 0.016 0.016 0.018 0.016
over 7 1/2 0.018 0.000 0.009 0.009 0.017 0.015 0.016 0.016
6.000 - 6.499 under 6 0.013 0.013 0.013 0.013 0.023 0.023 0.016 0.023
  6 to 7 1/2 0.010 0.010 0.010 0.010 0.018 0.018 0.023 0.018
over 7 1/2 0.020 0.000 0.010 0.010 0.020 0.015 0.018 0.018
6.500 - 6.999 under 6 0.015 0.015 0.015 0.015 0.027 0.027 0.018 0.027
  6 to 7 1/2 0.012 0.012 0.012 0.012 0.021 0.021 0.027 0.021
over 7 1/2 0.023 0.000 0.012 0.012 0.026 0.026 0.021 0.021
7.000 - 7.499 under 6 0.018 0.018 0.018 0.018 0.032 0.032 0.032 0.032
  6 to 7 1/2 0.013 0.013 0.013 0.013 0.023 0.023 0.023 0.023
over 7 1/2 0.026 0.000 0.013 0.013 0.031 0.031 0.023 0.023
7.500 - 7.999 under 6 0.020 0.020 0.020 0.020 0.035 0.035 0.035 0.035
  6 to 7 1/2 0.015 0.015 0.015 0.015 0.026 0.026 0.026 0.026
over 7 1/2 0.029 0.000 0.015 0.015 0.036 0.036 0.026 0.026
8.000 - 8.499 under 6 0.023 0.023 0.023 0.023 0.041 0.041 0.041 0.041
  6 to 7 1/2 0.016 0.016 0.016 0.016 0.028 0.028 0.028 0.028
over 7 1/2 0.031 0.000 0.015 0.016 0.033 0.022 0.028 0.028
8.500 - 8.999 under 6 0.025 0.025 0.025 0.025 0.044 0.044 0.044 0.044
  6 to 7 1/2 0.017 0.017 0.017 0.017 0.030 0.030 0.030 0.030
over 7 1/2 0.034 0.000 0.015 0.019 0.038 0.022 0.030 0.030
9.000 - 9.499 under 6 0.028 0.028 0.028 0.028 0.045 0.045 0.049 0.049
  6 to 7 1/2 0.019 0.019 0.019 0.019 0.033 0.033 0.033 0.033
over 7 1/2 0.037 0.000 0.015 0.022 0.043 0.022 0.033 0.033
9.500 - 9.999 under 6 0.030 0.030 0.030 0.030 0.045 0.045 0.053 0.053
  6 to 7 1/2 0.020 0.020 0.020 0.020 0.035 0.035 0.035 0.035
over 7 1/2 0.040 0.000 0.015 0.025 0.048 0.022 0.035 0.035
10.000 - 10.999 under 6 0.034 0.034 0.034 0.034 0.045 0.045 0.000 0.060
  6 to 7 1/2 0.022 0.022 0.022 0.022 0.039 0.039 0.039 0.039
over 7 1/2 0.044 0.000 0.015 0.029 0.055 0.022 0.039 0.039
11.000 - 12.000 under 6 0.035 0.035 0.035 0.035 0.050 0.050 0.065 0.065
  6 to 7 1/2 0.025 0.025 0.025 0.025 0.045 0.045 0.045 0.045
over 7 1/2 0.045 0.000 0.015 0.035 0.060 0.022 0.045 0.045




A Many tubes with inside diameter less than 50 % of outside diameter of with wall thickness more than 25% of outside diameter, or with wall thickness over 1 1/4 in, or weighing more than 90 lb/ft. are difficult to draw over a mandrel. Therefore, the insdie diameter can vary over or under by an amount equal to 10 % of the wall thickness.
See also Footnote B.

B For those tubes with insdie diameter less than 1/2 in. (or less than 5/8 in. when the wall thickness is more than 20 % of the outside diameter). which are not commonly drawn over a mandrel. footnote A is not applicable Therefore, for those tubes, the inside diameter is governed by the outside diameter tolerance shown in this table and the wall thickness tolerances shown in Table 9.

C Tubing having a wall thickness less than 3 % of the outside diameter cannot be straightened property without a certain amount of distortion. Consequently such tubes.
while having an average outside diameter and inside diameter within the tolerances shown in this table, require an ovality tolerance of 1/2 % over and under nominal outside diameter, this being in addition to the tolerances indicated in this table.

D 1 in. 25.4 mm.

TABLE 9 Wall Thickness Tolerances for Round Cold-Worked Tubing.



Wall Thickness Range as % of Outside Diameter Wall Thickness Tolerance Over and Under Nominal, %
Up to 1,499 in,ID 1,5000 in, and Over
25 and Under 10.0 7.5
Over 25 12.5 10.0





TABLE 10 Outside Diameter and Wall Tolerances for Rough- Turned Seamless Steel Tubing


Specified Size Outside Diameter in. (mm) Outside Diameter. in (mm) Wall Thickness, %
       
Up to but not including 6 3/4 (171.4) 0.005 (0.13) 0.005 (0.13) 12.5 12.5
6 3/4 to 8 (171.4 to 203.2) 0.010 (0.25) 0.010 (0.25) 12.5 12.5





TABLE 11 Outside Diameter Tolerances for Ground Seamless Tubing


NOTE - The Wall thickness and inside diameter tolerances are the same as for cold-worked mechanical 
tubing tolerances given in Table 8.



Size Outside Diameter in. (mm) Outside Diameter Tolerances for Sizes and Lengths Given, in, (mm)
Over Under Over Under
Lengths up to 16 ft (4.9 m), incl   Lengths over 16 ft (4.9 m)  
Up to 1 1/4 (31.8), incl 0.003 (0.08) 0.000 0.004 (0.10) 0.000
Over 1 1/4 to 2 (31.8 to 50.8), incl 0.005 (0.13) 0.000 0.006 (0.15) 0.000
  Over Under Over Under
Lengths up to 12 ft (3.7 m), incl   Lengths to 16 ft (4.9 m)  
Over 2 3 (50.8 to 76.2), incl 0.005 (0.13) 0.000 0.006 (0.15) 0.000
Over 3 to 4 (76.2 to 101.6), incl 0.006 (0.15) 0.000 0.008 (0.20) 0.000





TABLE 12 Length Tolerances for Round Hot-Finished or Cold-Finished Tubing
NOTE - The producer should be consulted for length tolerances for tube produced by liquid - or air-quenching heat treatment.



Length, ft (m) Outside Diameter, in (mm) Tolerance, in. (mm)
Over Under
4 (1.2)and under up to 2 (50.8), incl 1/16 (1.6) 0
4(1.2)and under over 2 to 4 (50.8 to 101.6), incl 3/32 (2.4) 0
4(1.2)and under over 4 (101.6) 1/3 (3.2) 0
Over 4 to 10 (1.2 to 3.0), incl up to 2 (50.8), incl 3/32 (2.4) 0
Over 4 to 10 (1.2 to 3.0), incl over 2 (50.8) 1/8 (3.2) 0
Over to 24 (3.0 to 7.3),incl all sizes 3/16 (4.8) 0
Over 24 (7.3) all sizes 3/15 + 1/2 (4.8 to 12.7) for each 10 ft (3.0 m) or fraction over 24 ft (7.3 m) 0





TABLE 13 Straightness Tolerances for Seamless Round Mechanical Tubing 

NOTE 1 - The straightness variation for any 3 ft (0.9 m) of length is determined by measuring the concavity between the tube and a 3-ft straightedge with a feeler gage

The total variation, that is the maximum curvature at any point in the total length of tube, is determined by rolling the tube on a surface plate and measuring the concavity with a feeler gage.

NOTE 2 - The tolerances apply generally to unannealed, finish-annealed, and medium-annealed cold-finished or hot-finished tubes, Whenstraightening stress would straightness tolerances do not apply to soft-annealed or quenched and tempered tubes.




Size Limits Maximum Curvature in any 3 ft/in. (mm/m) Maximum Curvature in Total Lengths, in. (mm) Maximum Curvature for Lengths under 3 ft or 1 m
OD 5 in. (127.0 mm)and smaller,Wall thickness, over 3 % of OD 0.030 (0.83) 0.030 x (no. of ft of length/3) (0.83 x no. of m of length) ratio of 0.010 in./ft or 0.83 mm/m
OD over 5 to 8 in, (127.0 to 203.2 mm), incl Wall thickness, over 4 % of OD 0.045 (1.25) 0.045 x (no. of ft of length/3) (1.25 x no. of m of length) ratio of 0.015 in./ft or 1.25 mm/m
OD over 8 to 12 3/4 in. (203.2 to 323.8 mm), incl. Wall thickness, over 4 % of OD 0.060 (1.67) 0.060 x (no of ft of length//3) (1.67 x no. of m of length) ratio of 0.020 in./ft or 16.7 mm/m





TABLE 14 Tolerances for Outside Dimensions and Wall Thickness of 

Square and Rectangular cold Finished Tubing




Largest Outside Dimension across Flats. in. (mm) Wall Thickness, in (mm) Tolerances for Outside Dimensions including Convexity or Concavity Wallthickness Tolerance, Plus and Minus. %
To 3/4 (19.0), incl 0.65 (1.65) and lighter over 0.065 (1.65) ±0.015 in. (0.38 mm) 10
To 3/4 (19.0), incl over 0.065 (1.65) ±0.010 in. (0.25 mm) 10
Over 3/4 to 1 1/4 (19.0 to 31.8), incl all thicknesses ±0.015 in. (0.36 mm) 10
Over 1 1/4 to 2 1/2 (31.8 to 63l5), incl all thicknesses ±0.020 in. (0.51 mm) 10
Over 2 1/2 to 3 1/2 (63.5 to 88.9), incl 0.065 (1.65)and lighter ±0.030 in. (0.78 mm) 10
Over 2 1/2 to 3 1/2 (63.5 to 88.9), incl over 0.065 (1.65) ±0.025 in. (0.65 mm) 10
Over 3 1/2 to 5 1/2 (88.9 to 139.7), incl all thickness ±0.030 in. (0.76 mm) 10
Over 5 1/2 to 7 1/2 (139.7 to 190.5), incl all thickness ±1 % 10


TABLE 15 Corner Radil of Square and Rectangular Cold-Finished Tubing

Wall Thickness, in (mm) Maximum Radii of Corners, in. (mm)
Over 0.020 to 0.049 (0.51 to 1.24), incl 3/32 (2.4)
Over 0.049 to 0.065 (1.24 to 1.65), incl 1/8 (3.2)
Over 0.065 to 0.083 (1.65 to 2.11), incl 9/64 (3.6)
Over 0.83 to 0.095 (2.11 to 2.41), incl 3/16 (4.8)
Over 0.095 to 0.109 (2.41 to 2.77), incl 13/64 (5.2)
Over 0.109 to 0.134 (2.77 to 3.40), incl 7/32 (5.6)
Over 0.134 to 0.156 (3.40 to 2.96), incl 1/4 (6.4)
Over 0.156 to 0.188 (3.96 to 4.78), incl 9/32 (7.1)
Over 0.188 to 0.250 (4.78 to 6.35), incl 11/32 (8.7)
Over 0.250 to 0.313 (6.35 to7.95), incl 7/16 (11.1)
Over 0.313 to 0.375 (7.95 to 9.52), incl 1/2 (12.7)
Over 0.375 to 0.500 (9.52 to 12.70), incl 11/16 (17.5)
Over 0.500 to 0.625 (12.70 to 15.88), incl 27/32 (21.4)





TABLE 16 Twist Tolerance of Square and Rectangular Cold-Finished Tubing

NOTE - The twist in square and rectangular tubing is measured by holding one end of the tubing on a surface plate 
and noting the height of either corner of the opposite end of the same side above the surface plate.




Largest Dimension, in. (mm) Twist Tolerance in 3 ft. in. (mm/m)
Under 1/2 (12.7) 0.050 (13.8)
1/2 to 1 1/2 (12.7 to 38.1), incl 0.075 (20.8)
Over 1 1/2 to 2 1/2 (38.1 to 63.5), incl 0.095 (26.2)
Over 2 1/2 to 4 (63.5 to 101.6), incl 0.125 (34.5)





TABLE 17 Length Tolerances When Exact Length Are Specified for Square and Rectangular Tubing 



Length, ft (m)  
1 to 4 (0.3 to 1.2), incl 1/8 (3.2) 0
Over 4 to 12 (1.2 to 3.7), incl 3/18 (4.8) 0
Over 12 (3.7) 1/4 (6.4) 0





TABLE S1.1 Special Smooth Finished Tubes Allowance for Surface Imperfections




Size. Outside Diameter, in. (mm) Wall Thickness, in (mm) Wall Depth Allowance for surface Imperfection, in. (mm)
Scores Pits
5/8 to 2 1/2 (15.8 to 63.5), incl 0.065 to 0.109 (1.65 to 2.77) 0.001 (0.03) 0.0015 (0.038)
  over 0.109 to 1/4 (2.77 to 6.4), incl 0.001 (0.03) 0.002 (0.05)
Over 2 1/2 to 5 1/2 (63.5 to 139.7), excl 0.083 to 1/8 (2.11 to 3.2), incl 0.0015 (0.038) 0.0025 (0.064)
  over 1/8 to 3/16 (3.2 to 4.8), incl 0.0015 (0.038) 0.003 (0.08)
  over 3/16 to 3/8 (4.8 to 9.5), incl 0.002 (0.05) 0.004 (0.10)
5 1/2 to 8 (139.7 to 203.2), excl 1/8 to 1/4 (3.2 to 6.4), incl 0.0025 (0.064) 0.005 (0.13)
  over 1/4 to 1/2 (6.4 to 12.7), incl 0.003 (0.08) 0.006 (0.15)





TABLE S1.2 Typical Tensile Properties, Hardness and Thermal Condition for some of the More

Common Grades of Carbon and Alloy Steels




Grade Designation Condition A Ultimate Strength, Yield Strength, Elongation in 2 in. or 50 mm, % Rockwall hardness B Scale
ksi MPa ksi MPa
1020 HR 50 345 32 221 25 55
CW 70 483 60 414 5 75
SR 65 448 50 345 10 72
A 48 331 28 193 30 50
N 55 379 34 234 22 60
 
1025 HR 55 379 35 241 25 60
CW 75 517 65 448 5 80
SR 70 483 55 379 8 75
A 53 365 30 207 25 57
N 55 379 36 248 22 60
 
1035 HR 65 448 40 276 20 80
CW 85 586 75 517 5 90
SR 75 517 65 448 8 85
A 60 414 33 228 20 72
N 65 448 40 276 15 80
 
1045 HR 75 517 45 310 15 80
CW 90 621 80 552 5 90
SR 80 552 70 483 8 85
A 65 448 35 241 20 72
N 75 517 48 331 15 80
 
1050 HR 80 552 50 345 10 85
SR 82 565 70 483 60 86
A 68 469 38 262 18 74
N 78 538 50 345 12 82
 
1118 HR 50 345 35 241 25 55
CW 75 517 60 414 5 80
SR 70 483 55 379 8 75
A 50 345 30 207 25 55
N 55 379 35 241 20 60
 
1137 HR 70 483 40 276 20 75
CW 80 552 65 448 5 85
SR 75 517 60 414 8 80
A 65 448 35 241 22 72
N 70 483 43 296 15 75
 
4130 HR 90 621 70 483 20 89
SR 105 724 85 586 10 95
A 75 517 55 379 30 81
N 90 621 60 414 20 89
 
4140 HR 120 855 90 621 15 100
SR 120 855 100 689 10 100
A 80 552 60 414 25 85
N 120 855 90 621 20 100


A The following are the symbol definitions for the various conditions:
HR - Hot Rolled
CW - Cold Worked
SR - Stress Relived
A - Annealed
N - Normalized

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