ASTM B690 / ASME SB690 / Iron Nickel Chromium Molybdenum Alloys(UNS N08366 AND UNS N09367) Seamless Pipe and Tube supplier & distributor in India

ASTM B-690 / ASME SB-690

SPECIFICATION FOR IRON NICKEL CHROMIUM MOLYBDENUM ALLOYS
(UNS N08366 AND UNS N09367) SEAMLESS PIPE AND TUBE

1.Scope

1.1This specification covers iron-nikel-chomiun-molybdenum alloys (UNS N08367) cold-finished annealed or hot-finished annealed seamless pipe and ube intended for use in special corrosive service and for heat-resisting applications.

1.2 Pipe and tube shall be supplied in the solution heat treated and descaled condition. When bright annealing is used, descaling is not necessary.

1.3 The values stated in inch-pound units are to be regarded as the standard. The values given in parentheses are for information only.

1.4 The following safety problems, if any, associated with its use. It is the responsibility saety and health practices and determine the applicability of regulatory limitations prior to use.

TABLE1 CHEMICAL REQUIREMENTS

Element	Compositon Limits, %		Product(Check) analysis Variation, under minn or over max, of the Specified Limit of Element, %
Carbon	0.035max	0.030max	0.005
Manganese	2.00max	2.00max	0.04
Silicon	1.00max	1.00max	0.05
Phosphorus	0.040max	0.040max	0.005
Sulfur	0.030max	0.030max	0.005
Chromium	20.00 to 22.00	20.00 to 22.00	0.25
Nickel	23.50 to 25.50	23.50 to 25.50	0.20
Molybdenum	6.00 to 7.00	6.00 to 7.00	0.15
Nitrogen	...	0.18 to 0.25	0.01
IronA	remainder	remainder
Copper		0.75max	0.04

AIron shall be determined arithmetically by differnce.

TABLE2 MECHANICAL PROPERTIES OF PIPE AND TUBE

	Cold-Worked Annealed N08366	Hot-Worked Annealde N08366	Clod-Worked or Hot-Worked Annealed N08367
Tensile strength, ksi(MPa)	75(517)	75(517)	104(717)
Yield strength, 0.2% offset, min, ksi(MPa)	30(206)	30(206)	46(317)
Elongation in 2 in. or 50mm or 4D, min, %	30	30	30

TABLE3 PERMISSIBLE VARIATIONS IN OUTSIDE DIAMETERA TUBE

Outside Diameter, in. (mm)	Permissible Variations, in. (mm)
Outside Diameter, in. (mm)	Plus	Minus
Hot-Finished Seamless Tubes
4 (101.6) and under	1/ 64 (0.4)	1/32 (0.8)
Over 4(101.6) to 7 1/2(190.5) incl	1/ 64 (0.4)	3/64 (1.2)
Over 7(190.5) to 91/2(228.6) incl	1/ 64 (0.4)	1/16(1.6)
Cold-Finished Seamless Tubes
Under 2 1/2 (63.5)	0.010(0.25)	0.010(0.25)
2 1/2(63.5) to 3(76.2), excl	0.012(0.30)	0.012(0.30)
3(76.2) to 4(101.6), incl	0.015(0.38)	0.015(0.38)
Over 4(101.6) to 7 1/2(190.5), incl	0.015(0.38)	0.025(0.64)
Over 7 1/2(190.5) to 9 (228.6), incl	0.015(0.38)	0.045(1.14)

AThese permissible variations include out-of-roundness. These permissible variations in ouside diamter apply to hot-finished
seamless, and cold-drawn seamless tubes before other fabricating operations such as upsetting, swaging, expanding,
bending, or polishing.

TABLE4 PERMISSIBLE VARIATIONS IN OUTSIDE DIAMETER, PIPE

Nominall Pipe Size in. mm)	Permissible Variations in Outside Diameter
	Plus		Minus
	in.	mm	in.	mm
1/8(3.2) to 1 1/2(38.1) incl	1/ 64	0.4	1/32	0.8
Over 1 1/2(38.1) to 4(101.6) incl	1/ 32	0.8	1/32	0.8
Over 4(101.6) to 8(203.2) incl	1/16	1.6	1/32	0.8
Over 8(203.2) to 18(457.2) incl	3/32	2.4	1/32	0.8
Over 18(457.2) to 26(660.4) incl	1/8	3.2	1/32	0.8
Over 26(660.4) to 34(863.6) incl	5/32	4.0	1/32	0.8
Over 34(863.6) to 48(1219.2) incl	3/16	4.8	1/32	0.8

TABLE5 PERMISSIBLE VARIATIONS IN WALL THICKNESSA TUBE

Outside diameter, in.(mm)	Wall Thickness, %

	Plus	Minus	Plus	Minus	Plus	Minus	Plus	Minus
Seamless, Hot-Finished Tubes
4(101.6) and under Over 4(101.6)	40 ...	0 ...	35 35	0 0	33 33	0 0	28 28	0 0
Seamless, Cold-Finished Tubes
	Plus				Minus
1 1/2(38.1) and under Over 1 1/2(38.1)	20 22				0 0

AThese permissible variationin wall thickness apply only to tubes, except internal-upset tubes, as rolled or drawn ,
and before swaging, expanding, bending, polishing, or other fabricating operations.

TABLE6 PERMISSIBLE VARIATIONS IN LENGTHA TUBE

Method of Manufacture	Outside diameter, in. (mm)	Cut Lneght, in. (mm)
		Plus	Minus
Seamless, hot-finished Seamless, cold-finished	all sizes under 2 (50.8) 2 (50.8) and over	3/16 (4.8) 1/8(3.2) 3/16(4.8)	0 0 0

AThese permissible variations in length apply to tubes before bending. They apply to cut lengths up to a nd
including 24ft (7.3 m). For lengths over 24ft (7.3 m) an additional over-tolerance of 1/3 in. (3.2mm) for each 10ft
(3.0) or fraction there of shall be permissible up to a maximum of 1/2 in. (12.7 mm).

APPENDIX (Nonmadatory Information) X1. SCHEDULES OF COLD-FINISHED SEAMLESS PIPE

X1.1 The schedules of cold-finished, seampless UNS n08366 pipe as given in Table X1 are regularly available.
Other schedules may be furnished, and the manufacturer should be consulted. Table X1 is published for information only.

TABLE X1 PIPE SCHEDULESA

Nominal Pipe Size	Outside Diameter	Nominal Wall Thickness
Nominal Pipe Size	Outside Diameter	Schedule No.5	Schedule No.10	Schedule No.40	Schedule No.80
Inches
1/4	0.54	...	0.065	0.88	...
3/8	0.675	...	0.065	0.091	0.126
1/2	0.840	0.065	0.083	0.109	0.147
1/8	1.050	0.065	0.083	0.113	0.154
1	1.315	0.065	0.109	0.133	0.179
1 1/4	1.660	0.065	0.109	0.14	0.191
1 1/2	1.900	0.065	0.109	0.145	0.200
2	2.375	0.065	0.109	0.154	0.218
2 1/2	2.875	0.083	0.120	0.203	0.276
3	3.500	0.083	0.120	0.216	0.300
3 1/2	4.000	0.083	0.120	0.226	0.318
4	4.500	0.083	0.120	0.237	0.337
5	5.563	...	0.120	0.258	...
6	6.625	...	...	0.280	...
Millimetres
6.4	13.72	...	1.65	2.24	3.2
9.5	17.14	...	1.65	2.31	3.73
12.7	21.34	1.65	2.11	2.77	3.91
19.1	26.67	1.65	2.11	2.87	4.55
25.4	33.40	1.65	2.77	3.38	4.85
31.8	42.16	1.65	2.77	3.56	5.08
50.8	48.26	1.65	2.77	3.68	5.54
63.5	60.32	1.65	2.77	3.91	7.04
76.2	73.02	2.11	3.05	5.16	7.62
808.9	88.90	2.11	3.05	5.49	8.08
101.6	101.60	2.11	3.05	5.74	8.56
127	114.30	2.11	3.05	6.02
152.4	141.30	...	...	6.55	...
	168.28	...	...	7.11	...

AThe pipe schedules shown above conform with standards adopted by the American National Standards Institute.

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