ASTM A573 Grade 58 steel Specification for Structural Carbon Steel Plates of Improved Toughness.
ASTM A573 Grade 58 steel application at atmospheric temperatures where improved notch toughness is important.
ASTM A573 Grade 58 steel Plates covered by this specification are limited to a maximum thickness of 1.5 in. [40 mm].
ASTM A573 Grade 58 material chemical composition:
| Grade | C, max | Mn | P,max | S,max | Si | |
| ≤1/2 in(13mm) | >1/2in-1.5in(13mm-40mm) | |||||
| 58 | 0.23 | 0.23 | 0.60-0.90 | 0.035 | 0.04 | 0.10-0.35 |
ASTM A573 Grade 58 carbon steel mechanical properties
| Grade | Tensile strength,ksi,mpa | Yield strength,ksi,mpa | Elongation,8in(200mm),min,% | Elongation,2in,(50mm),min,% |
| 58 | 58-71(400-490) | 32(220) | 21 | 24 |
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