ASTM A573 steel is primarily for structural applications requiring improved notch toughness, such as storage tanks, while ASTM A572 is a high-strength, low-alloy (HSLA) steel used for general structural applications like bridges, buildings, and heavy equipment where high strength and ductility are key. A573 is a carbon-manganese-silicon steel for use at atmospheric temperatures where toughness is important, whereas A572 offers a range of grades (42 to 65) with varying high yield strengths for demanding structural uses.
ASTM A573GR65 steel Vs ASTM A572GR65 steel in chemical composition
| Grade | C max | Mn | P max | S max | SI |
| A572GR65 | 0.23 | 1.35 max | 0.04 | 0.05 | 0.40max |
| A573GR65 | 0.24 | 0.85-1.2 | 0.035 | 0.04 | 0.15-0.40 |
ASTM A573GR65 steel Vs ASTM A572G65 steel in mechanical properties
| Grade | Yield Strength Mpa | Tensile Strength Mpa | Elongation % in 200mm | Elongation % in 50mm |
| A572GR65 | 450 | 550 | 15 | 17 |
| A573GR65 | 240 | 415-530 | 20 | - |
ASTM A573 Steel Vs ASTM A572 Steel
ASTM A573 steel plate is intended for service at atmospheric temperature where improved notch toughness is important.
ASTM A572 steel plate is widely used in structural applications, including bridges, buildings and construction equipment and more.
