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ASTM A53
ASTM A106
API 5L
ASTM A333
ASTM A335
ASTM A312
ASTM A350
ASTM A105
ASTM A694
ASTM A182
A350 LF2
ASTM A234
ASTM A420
ASTM A860
 A193 B7
A194 2H
A240 GR.410
A312 S31726

ASTM A106 

ASTM A106 - Seamless Carbon Steel Pipe for High-Temperature Service

Chemical Compositions (max%)

Grade

C

Mn

P

S

Si

Cr

Cu

Mo

Ni

V

A

0.25

0.27-0.93

0.035

0.035

≥0.10

0.40

0.40

0.15

0.40

0.08

B

0.30

0.29-1.06

0.035

0.035

≥0.10

0.40

0.40

0.15

0.40

0.08

C

0.35

0.29-1.06

0.035

0.035

≥0.10

0.40

0.40

0.15

0.40

0.08

 

Notes:
1) For each reduction of 0.01 % below the specified C maximum, an increase of 0.06 % Mn above the specified maximum will be permitted up to a maximum of 1.35 %.
2) The sum of Cu, Ni, Cr, Mo and V shall not exceed 1.00%.

Tensile Requirements

Tensile Requirements

Grade A

Grade B

 Grade C

Tensile strength, min, psi [MPa]

48 000 [330]

60 000 [415]

70 000 [485]

Yield strength, min, psi [MPa]

30 000 [205]

35 000 [240]

40 000 [275]

 

Longitudinal

Transverse

Longitudinal

Transverse

Longitudinal

Transverse

Elongation in 2 in. [50 mm], min, %:

 

 

 

 

 

 

Basic minimum elongation transverse strip tests, and for all small sizes tested in full section

35

25

30

16.5

30

16.5

When standard round 2-in. [50-mm] gage length test specimen is used

28

20

22

12

20

12

For longitudinal strip tests

A

 

A

 

A

 

For transverse strip tests, a deduction for each 1.32-in. [0.8-mm] decrease in wall thickness below 5⁄16 in. [7.9 mm] from the basic minimum elongation of the following percentage shall be made

 

1.25

 

1.00

 

1.00

Note:

The minimum elongation in 2 in. [50 mm] shall be determined by the following equation:

e = 625 000A0.2 / U 0.9 for SI units, and
e = 1940A0.2 / U 0.9 for inch-pound units,

where: 

e = minimum elongation in 2 in. [50 mm], %, rounded to the nearest 0.5 %,
A = cross-sectional area of the tension test specimen, in.2 [mm2], based upon specified outside diameter or nominal specimen width and
specified wall thickness,rounded to the nearest 0.01 in.2 [1 mm2]. (If the area thus calculated is equal to or greater than 0.75 in.2 [500 mm2], then the value 0.75 in.2 [500 mm2] shall be used.), and
U = specified tensile strength, psi [MPa].


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