Material Grade
Alloy Steel :
This specification covers forged low alloy and stainless steel piping components for use in pressure systems. Included are flanges, fittings, valves, and similar parts to specified dimensions or to dimensional standards, such as the ASME specifications that are referenced in Section 2.
Specifications
| Standard | ASTM A182/A182M ASTM A234/A234M |
Chemical Composition
|
|
A182 F1 |
A182 F5 |
A182 F9 |
A182 F11 |
A182 F22 |
A182 F91 |
A234 WP1 |
A234 WP5 |
A234 WP9 |
A234 WP11 |
A234 WP22 |
A234 WP91 |
||||
|
|
|
|
|
CL 1 |
CL 2 |
CL 3 |
CL 1 |
CL 3 |
|
|
CL 1 & 3 |
CL 1 & 3 |
CL 1 |
CL 2 & 3 |
CL 1 & 3 |
|
|
C |
0.28 |
0.15 |
0.15 |
0.05–0.15 |
0.10–0.20 |
0.10–0.20 |
0.05–0.15 |
0.05–0.15 |
0.08–0.12 |
0.28 |
0.15 |
0.15 |
0.05–0.15 |
0.05–0.20 |
0.05–0.15 |
0.08–0.12 |
|
Mn |
0.60 to 0.90 |
0.30 to 0.80 |
0.30 to 0.80 |
0.30–0.60 |
0.30–0.80 |
0.30–0.80 |
0.30–0.60 |
0.30–0.60 |
0.30–0.60 |
0.30 to 0.90 |
0.30 to 0.60 |
0.30 to 0.60 |
0.30–0.60 |
0.30–0.80 |
0.30–0.60 |
0.30–0.60 |
|
P |
0.045 |
0.04 |
0.03 |
0.03 |
0.04 |
0.04 |
0.04 |
0.04 |
0.02 |
0.045 |
0.04 |
0.03 |
0.03 |
0.04 |
0.04 |
0.02 |
|
S |
0.045 |
0.04 |
0.03 |
0.03 |
0.04 |
0.04 |
0.04 |
0.04 |
0.01 |
0.045 |
0.03 |
0.03 |
0.03 |
0.04 |
0.04 |
0.01 |
|
Si |
0.15 to 0.35 |
0.50 max |
0.50 to 1.00 |
0.50–1.00 |
0.50–1.00 |
0.50–1.00 |
0.5 |
0.5 |
0.20–0.50 |
0.15 to 0.50 |
0.50 max |
1.00 max |
0.50–1.00 |
0.50–1.00 |
0.50 max |
0.20–0.50 |
|
Ni |
. . . |
0.50 max |
. . . |
. . . |
. . . |
. . . |
. . . |
. . . |
0.4 |
. . . |
0.50 max |
0.50 max |
. . . |
. . . |
. . . |
0.4 |
|
Cr |
. . . |
4.0 to 6.0 |
8.0 to 10.0 |
1.00–1.50 |
1.00–1.50 |
1.00–1.50 |
2.00–2.50 |
2.00–2.50 |
8.0–9.5 |
. . . |
4.0 to 6.0 |
8.0 to 10.0 |
1.00–1.50 |
1.00–1.50 |
1.90–2.60 |
8.0–9.5 |
|
Mo |
0.44 to 0.65 |
0.44 to 0.65 |
0.90 to 1.10 |
0.44–0.65 |
0.44–0.65 |
0.44–0.65 |
0.87–1.13 |
0.87–1.13 |
0.85–1.05 |
0.44 to 0.65 |
0.44 to 0.65 |
0.90 to 1.10 |
0.44–0.65 |
0.44–0.65 |
0.87–1.13 |
0.85–1.05 |
|
Co |
. . . |
. . . |
. . . |
. . . |
. . . |
. . . |
. . . |
. . . |
0.06–0.10 |
. . . |
. . . |
. . . |
. . . |
. . . |
. . . |
|
Mechanical & Physical Properties
|
Property |
Values |
|
||||||||
|
|
A 182 F1 |
A 182 F5 |
A182 F9 |
A182 F11 |
A182 F22 |
A182 F91 |
A234 WP91 |
|||
|
|
|
|
|
CL 1 |
CL 2 |
CL 3 |
CL 1 |
CL 3 |
|
|
|
Ultimate Tensile Strength (Min) |
485 Mpa |
485 Mpa |
585 Mpa |
415 Mpa |
485 Mpa |
515 Mpa |
415 Mpa |
515 Mpa |
620 Mpa |
620 Mpa |
|
0.2% Yield Strength |
275 Mpa |
275 Mpa |
380 Mpa |
205 Mpa |
275 Mpa |
310 Mpa |
205 Mpa |
310 Mpa |
415 Mpa |
415 Mpa |
|
Elongation |
20% min |
20% min |
20% min |
20% min |
20% min |
20% min |
20% min |
20% min |
20% min |
20% min |
|
Reduction of Area |
30% min |
35% min |
40% min |
45% min |
30% min |
30% min |
35% min |
30% min |
40% min |
--- |
|
Hardness |
143 to 192 HB |
143 to 217 HB |
179 to 217 HB |
121 - 174 HB |
143 to 217 HB |
156 to 207 HB |
121 - 174 HB |
156 to 207 HB |
190 to 248 HB |
190 to 250 HB |
|
|
|
|
|
|
|
|
|
|
|
|
|
Property |
Values |
|||||||||
|
|
A234 WP1 |
A234 WP5 |
A234 WP9 |
A234 WP11 |
A234 WP22 |
|||||
|
|
|
CL 1 |
CL 3 |
CL 1 |
CL 3 |
CL 1 |
CL 2 |
CL 3 |
CL 1 |
CL 3 |
|
Ultimate Tensile Strength (Min) |
380 to 550 Mpa |
415 Mpa |
520 Mpa |
415 Mpa |
520 Mpa |
415 Mpa |
485 Mpa |
520 Mpa |
415 Mpa |
520 Mpa |
|
0.2% Yield Strength |
205 Mpa |
205 Mpa |
310 Mpa |
205 Mpa |
310 Mpa |
205 Mpa |
275 Mpa |
310 Mpa |
205 Mpa |
310 Mpa |
|
Elongation |
22% min |
22% min |
22% min |
22% min |
22% min |
22% min |
22% min |
22% min |
22% min |
22% min |
|
Reduction of Area |
--- |
--- |
--- |
--- |
--- |
--- |
--- |
--- |
--- |
--- |
|
Hardness |
197 HB MAX |
217 HB |
217 HB |
217 HB |
217 HB |
197 HB MAX |
197 HB MAX |
197 HB MAX |
197 HB MAX |
197 HB MAX |
* All values are maximum unless otherwise stated. Where ellipses (...) appear in this table, there is no requirement and analysis for the element need not be determined or reported.
