ASTM A572 Grade 50 HSLA Steel vs ASTM A572 Grade 60 HSLA Steel
Property comparison of ASTM A572 Grade 50 HSLA Steel and ASTM A572 Grade 60 HSLA Steel, both carbon steel.
| Property | ASTM A572 Grade 50 HSLA Steel | ASTM A572 Grade 60 HSLA Steel | Difference |
|---|---|---|---|
| Yield strength | 345 MPa | 415 MPa | +20% |
| Tensile strength | 450 MPa | 520 MPa | +16% |
| Elongation | 18 % | 16 % | -11% |
| Elastic modulus | 200,000 MPa | 200,000 MPa | 0% |
| Shear modulus | 77,200 MPa | 77,200 MPa | 0% |
| Poisson ratio | 0.3 | 0.3 | 0% |
| Density | 7,850 kg/m³ | 7,850 kg/m³ | 0% |
| Thermal conductivity | 64.3 W/m·K | 64.3 W/m·K | 0% |
| Specific heat | 458 J/kg·K | 458 J/kg·K | 0% |
| Coefficient of thermal expansion | 0.000012 1/K | 0.000012 1/K | 0% |
| Melting point | 1,480 °C | 1,480 °C | 0% |
Difference is ASTM A572 Grade 60 HSLA Steel relative to ASTM A572 Grade 50 HSLA Steel. Values are taken from the representative row of each material; both materials may have multiple heat treatments or conditions on their individual pages.
Identification
- grade
- 50
- standard
- ASTM
- grade
- 60
- standard
- ASTM
About ASTM A572 HSLA structural steel
A572 is a high-strength low-alloy structural steel produced in Grade 42, 50, 55, 60, and 65 (yield strength in ksi). Grade 50 has largely replaced A36 in modern building and bridge design because the strength-to-cost ratio is better. Wide-flange beams (W-shapes) are typically supplied to A992, which is similar but tighter on chemistry.
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