Properties
Properties
Mechanical properties
The values in the table below are for test pieces taken transverse to the rolling direction for ASTM A1018
| ASTM A1011-15 ASTM A1018-16 |
Grade | HSLAS Grade 70 Class 1 |
HSLAS Grade 70 Class 2 |
|---|---|---|---|
| Min. yield strength | ksi | 70 | 70 |
| Min. tensile strength | ksi | 85 | 80 |
| Elingation % | t < 0.230 inch | 14 | 14 |
| t ≥ 0.230 inch | 12 | 12 | |
| Bend radius | 3.5t | 3t |
Elongation after fracture A uses test piece length L0 is 2 inches.
Grades are available with improved formability (F) on request.
Bend test is performed with polished edges, bend line parallel to the rolling direction.
Chemical composition
Steel supplied against ASTM A1011/A1018 will comply with the chemical limits below.
All values are in weight%.
|
ASTM A1011-15 |
Grade | HSLAS Grade 70 Class 1 |
HSLAS Grade 70 Class 2 |
|---|---|---|---|
| C | Max. | 0.26 | 0.15 |
| Mn | Max. | 1.65 | 1.65 |
| P 2 | Max. | 0.040 | 0.040 |
| S 3 | Max. | 0.040 | 0.040 |
| Si | Max. | - | - |
| Altot | Min. | - | - |
| Cb | Min. | 0.005 | 0.005 |
| V | Min. | 0.005 | 0.005 |