ASTM A333 / A333M Grade 4
Chemical Properties
| Element |
Grade 4 |
| Carbon, max |
0.12 |
| Manganese |
0.50–1.05 |
| Phosphorus, max |
0.025 |
| Sulfur, max |
0.025 |
| Silicon |
0.08–0.37 |
| Nickel |
0.40 max |
Note:
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.
Mechanical Properties
| Tensile strength, min, psi [MPa] |
Yield strength, min, psi [MPa] |
Elongation in 2 in. or 50 mm |
| Basic minimum elongation |
proportionally
smaller size test
|
For longitudinal strips tests |
| Longitudinal |
Transverse |
Longitudinal |
Transverse |
Longitudinal |
Transverse |
| psi |
MPa |
psi |
MPa |
psi |
MPa |
| psi |
55 000 |
30 [205] |
35 |
25 |
28 |
20 |
1.75B |
| MPa |
30 000 |
205 |
Note:
A Elongation of Grade 11 is for all walls and small
sizes tested in full section.
B The calculated minimum values.
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