ASTM A 333 Gr 6
Material Specifications.
SPECIFICATION FOR SEAMLESS AND WELDED STEEL PIPE FOR LOW TEMPERATURE SERVICE
CHEMICAL REQUIREMENT
Composition, %
| Grade 6 A | |
| Carbon, max | 0.30 |
| Manganese | 0.29–1.06 |
| Phosphorus, max | 0.025 |
| Sulfur, max | 0.025 |
A For each reduction of 0.01% carbon below 0.30%, an increase of 0.05% manganese above 1.06% would be permitted to a maximum of 1.35% manganese.
TENSILE REQUIREMENTS
|
Grade 6
|
|
| Tensile strength, min, psi (MPa) |
60 000 (415)
|
| Yield strength, min, psi (MPa) |
35 000 (240)
|
IMPACT TEMPERATURE
Minimum Impact Test Temperature -45 C(-50 F)
IMPACT REQUIREMENTS
| Minimum Average Notched Bar Impact Value of Each Set of Three Specimens | Minimum Notched Bar Impact Value of One Specimen Only of a Set | |||
| Size of Specimen, mm |
ft-lbf
|
J
|
ft-lbf
|
J
|
| 10 by 10 |
13
|
18
|
10
|
14
|
| 10 by 7.5 |
10
|
14
|
8
|
11
|
| 10 by 6.67 |
9
|
12
|
7
|
9
|
| 10 by 5 |
7
|
9
|
5
|
7
|
| 10 by 3.33 |
5
|
7
|
3
|
4
|
| 10 by 2.5 |
4
|
5
|
3
|
4
|
Straight line interpolation for intermediate values is permitted.
IMPACT TEMPERATURE REDUCTION
| Specimen Width Along Notch or Actual Material Thickness mm | Temperature Reduction, Degrees Colder C |
| 10 (standard size) | 0 |
| 9 | 0 |
| 8 | 0 |
| 7.5 (3/4 standard size) | 3 |
| 7 | 4 |
| 6.67 (2/3 standard size) | 5 |
| 6 | 8 |
| 5 (1/2 standard size) | 11 |
| 4 | 17 |
| 3.33 (1/3 standard size) | 19 |
| 3 | 22 |
| 2.5 (1/4 standard size) | 28 |
P Number/ Group Number
|
ASTM A333
|
Grade 6
|
| P Number |
1
|
| Group |
1
|