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ASTM A36 steel and A572 Grade 50 steel are both very popular in construction. As an experienced steel materials supplier, BBN steel usually received all kinds of questions about ASTM A36 steel and A572 Grade 50 steel. For example, ASTM A36 steel VS A572 Grade 50 steel.
ASTM A36 steel VS A572 Grade 50 steel in chemical composition:
| Item | C | Mn | P | S | Si | Cu |
| A36 steel | ≦0.26 | - | ≦0.040 | ≦0.050 | ≦0.40 | ≧0.20 |
| A572 Grade 50 steel | ≦0.26 | ≦1.65 | ≦0.040 | ≦0.050 | ≦0.40 | - |
ASTM A36 steel VS A572 Grade 50 steel in mechanical properties:
| Item | Yield strength ReH/(N/mm2) (t≤16mm) min | Tensile strength Rm/(N/mm2) (3mm≤t≤16mm) | Elongation A/% (3mm≤t≤40mm) min |
| A36 steel | 250 | 400-550 | 23 |
| A572 Grade 50 steel | 345 | 450 | 18 |
Actually, ASTM A36 steel and A572 Grade 50 steel belong to different steel classification. ASTM A36 steel is mild steel, while A572 Grade 50 steel is HSLA steel, which has higher strength than A36 mild steel. From the table “ASTM A36 steel VS A572 Grade 50 steel in mechanical properties”, we can also easily tell the difference between ASTM A36 steel and A572 Grade 50 steel. They are not equivalent materials and usually not use each other as substitute.
