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A106 Pipe

ASTM A106 Grade B/ A106 Gr.B

CARBON GRADE COMPARISON CHART:
ASTM A106 VS ASTM A53

ASTM A106 Grade B/ A106 Gr.B

ASTM A106 Grade B/ A106 Gr.B

For each reduction of 0.01% below the specified carbon maximum, an increase of 0.06% manganese above the specified maximum will be permitted up to a maximum of 1.50% grades X42 – X52, 1.65% above X52 – X70.

For each reduction of 0.01% below the specified carbon maximum, an increase of 0.06% manganese above the specified maximum will be permitted up to a maximum of 1.35%.

ASTM A106

Standard Specification for Seamless Carbon Steel Pipe for High-Temperature Service

1. Scope
1.1 This specification covers seamless carbon steel pipe for high-temperature service (Note 1) in NPS 1/8 to NPS 48 [DN 6 to DN 1200] (Note 2) inclusive, with nominal (average) wall thickness as given in ASME B36.10. It shall be permissible to furnish pipe having other dimensions provided such pipe complies with all other requirements of this specification. Pipe ordered under this specification shall be suitable for bending, flanging, and similar forming operations, and for welding. When the steel is to be welded, it is presupposed that a welding procedure suitable to the grade of steel and intended use or service will be utilized.
Note 1: It is suggested, consideration be given to possible graphitization.
Note 2: The dimensionless designator NPS (nominal pipe size) [DN (diameter nominal)] has been substituted in this standard for such traditional terms as "nominal diameter", "size", and "nominal size".
1.2 Supplementary requirements of an optional nature are provided for seamless pipe intended for use in applications where a superior grade of pipe is required. These supplementary requirements call for additional tests to be made and when desired shall be so stated in the order.
1.3 The values stated in either SI units or inch-pound units are to be regarded separately as standard. The values stated in each system may not be exact equivalents. Therefore, each system is to be used independently of the other.
1.4 The following precautionary caveat pertains only to the test method portion, Sections 11, 12, and 13 of this specification: This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.

Chemical Requirements ASTM A106

  ASTM A106 Grade A ASTM A106 Grade B ASTM A106 Grade C
Carbon,max 0.25 (1) 0.30 (2) 0.35 (2)
Manganese 0.27-0.93 0.29-1.06 0.29-1.06
Phosphorus,max 0.035 0.035 0.035
Sulfur,max 0.035 0.035 0.035
Silicon,min 0.10 0.10 0.10
Chrome,max (3) 0.40 0.40 0.40
Copper,max (3) 0.40 0.40 0.40
Molybdenum,max (3) 0.15 0.15 0.15
Nickel,max (3) 0.40 0.40 0.40
Vanadium,max (3) 0.08 0.08 0.08

(1) For each reduction of 0.01% below the specified carbon maximum, an increase of 0.06% manganese above
the specified maximum will be permitted up to a maximum of 1.35%.

(2)Unless otherwise specified by the purchaser, for each reduction of 0.01% below the specified carbon maximum,
an increase of 0.06% manganese above the specified maximum will be permitted up to a maximum of 1.65%.

(3) These five elements combined shall not exceed 1%.

ASTM A53

Standard Spec. for Pipe, Steel, Black and Hot-Dipped, Zinc-Coated, Welded and Seamless

1. Scope
1.1 This specification covers seamless and welded black and hot-dipped galvanized steel pipe in NPS 1/8 to NPS 26 [DN 6 to DN 650] (Note 1), inclusive, with nominal wall thickness (Note 2) as given in Table X2.2 and Table X2.3. It shall be permissible to furnish pipe having other dimensions provided that such pipe complies with all other requirements of this specification. Supplementary requirements of an optional nature are provided and shall apply only when specified by the purchaser.
Note 1. The dimensionless designators NPS (nominal pipe size) [DN (diameter nominal)] have been substituted in this specification for such traditional terms as "nominal diameter," "size," and "nominal size."
Note 2. The term nominal wall thickness has been assigned for the purpose of convenient designation, existing in name only, and is used to distinguish it from the actual wall thickness, which may vary over or under the nominal wall thickness.

Chemical Requirements ASTM A53

  C Mn P S Cu (1) Ni (1) Cr (1) Mo (1) V (1)
Type S (seamless pipe)
ASTM A53 Grade A 0.25 0.95 0.05 0.045 0.40 0.40 0.40 0.15 0.08
ASTM A53 Grade B 0.30 1.20 0.05 0.045 0.40 0.40 0.40 0.15 0.08
Type E (electric-resistance-welded)
ASTM A53 Grade A 0.25 0.95 0.05 0.045 0.40 0.40 0.40 0.15 0.08
ASTM A53 Grade B 0.30 1.20 0.05 0.045 0.40 0.40 0.40 0.15 0.08
Type F (furnace-welded pipe)
ASTM A53 Grade A 0.30 1.20 0.05 0.045 0.40 0.40 0.40 0.15 0.08

(1) The total composition for these five elements shall not exceed 1.00%.

Specification A106 NPS 1/8 -- 48 ANSI Schedules to 160
Scope Covers SEAMLESS carbon steel nominal wall pipe for high-temperature service, suitable for bending, flanging and similar forming operations.

NPS 1 1/2 and under may be either hot finished or cold drawn. NPS 2 and larger shall be hot finished unless otherwise specified.
Kinds of Steel
Permitted For
For Pipe Material		 Killed Steel
Open-hearth
Electric-furnace
Basic-oxygen
Hot-Dipped
Galvanizing		 Not covered in specification.
Permissible Variations
in Wall Thickness		 The minimum wall thickness at any point shall not be more than 12.5% under the nominal wall thickness specified.
Tensile
Requirements
Seamless
  Grade A Grade B Grade C
Tensile Strength, min., psi 48,000 60,000  70,000
Yield Strength, min., psi 30,000 35,000  40,000
Hydrostatic
Testing		 Inspection test pressures produce a stress in the pipe wall equal to 60% or specified minimum yield strength (SMYS) at room temperature.

Maximum Pressures are not to exceed 2500 psi for NPS 3 and under and 2800 psi for the larger sizes. Pressure is maintained for not less than 5 seconds.
Permissible Variations
in Weights per Foot		 Weight of any length shall not vary more than 10% over and 3.5% under that specified. NOTE - NPS 4 and smaller - weighed in lots. Larger sizes - by length
Permissible
Variations in
Outside Diameter		 Outside Diameter at any point shall not vary from standard specified more than - 
 
NPS Over Under
1 1/2 and smaller 1/64" 1/32"
2 -- 4 1/32" 1/32"
5 -- 8 1/16" 1/32"
10 -- 18 3/32" 1/32"
20 -- 26 1/8" 1/32"
Mechanical Tests
Specified		 Tensile Test - NPS 8 and larger - either transverse or longitudinal acceptable

Smaller than NPS 8 -- weighed in lots. Larger sizes -- by length.

Flattening Test - NPS 2 and larger.

Bending Test(Cold) - NPS 2 and under.

For normal A106 uses:
Degree of Bend  = 90
Diameter of Mandrel = 12 x nom. dia. of pipe

For close coiling:
Degree of Bend  = 180
Diameter of Mandrel = 8 x nom. diameter of pipe
Number of
Tests Required
  NPS On One Length From Each Lot of
Tensile 5 and smaller 400 or less
  6 and larger 200 or less
Bonding 2 and smaller 400 or less
Flattening 2 through 5 400 or less
  6 and over 200 or less
Lengths Lengths required shall be specified on order. No "jointers" permitted unless otherwise specified. If no definite lengths required, following practice applies:

Single Random -- 16' - 22'. 5% may be 12' - 16'

Double Random -- Minimum length 22', Minimum average 35'. 5% may be 16' - 22'.
Required Markings
on Each Length
(On Tags attached to
each Bundle in case
of Bundled Pipe)		 Rolled Stamped or Stenciled (Mfrs. option)
• Manufacturer's name or brand.
• Length of pipe.
• A106 A, A106 B, A106 C. ANSI schedule number.
• Hydrostatic test pressure and/or NDE or NH if neither is specified
• Weight per foot (NPS 4 and larger)
• Additional "S" if tested supplementary requirements.
General
Information		 * Unless otherwise specified, pipe furnished with plain ends.
* Purchaser may specify NDE in lieu of hydrostatic test or neither.
* Surface finish standards are outlined in specification.

Material Grades

High Temperature Seamless Pipe ASTM A106 Gr. B/C, API 5L Gr. B, ASTM A53 Gr. B
Heat Exchanger Seamless Tube ASTM A179
Low Temperature Seamless Pipe ASTM A333 Gr. 3/6
Low Temperature Seamless Tube ASTM A334 Gr. 6
High Yield Seamless Pipe API 5L Gr. X42/X46/X52/X56/X60/X65/X70/X80 PSL-1/PSL-2
High Yield Seamless Pipe ISO 3183 Gr.L245, L290, L320, L360, L390, L415, L450, L485
Atmospheric & Low Temp EFW Pipes ASTM A671 Gr. CC60/CC65/CC70
High Pressure & Moderate Temp EFW Pipes ASTM A672 Gr. B60/B65/B70/C55/C60/C65/C70
High Yield ERW/SAW Pipe API 5L Gr. X42/X46/X52/X56/X60/X65/X70/X80 PSL-1/PSL-2
High Yield ERW/SAW Pipe ISO 3183 Gr.L245, L290, L320, L360, L390, L415, L450, L485

ASTM A106 Grade B/ A106 Gr.B related industrial piping materials stock:

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