A572
A572 is a high strength low alloy steel plate used in a variety of structural applications. It is produced in Grades 42, 50, 60 & 65—the grades representing the yield strength. The most common grade Chapel stocks is Grade 50 which is produced up to 4” thick. Anything over 4” is made to a Grade 42, although we often stock it modified to reach the 50 ksi min yield. On requirements for this please inquire. We also stock Grade 60 in limited quantities.
Properties of ASTM A572 Steel, Grade 42:
| Properties | Metric | English | Comments |
| Density | 7.85 g/cc | 0.284 lb/in2 | Typical of ASTM Steel |
| Hardness, Brinll | 123 | 123 | based on conversion from tensile strength |
| Hardness, Rockwell B | 69 | 69 | based on conversion from tensile strength |
| Tensile Strength, Ultimate | 415 MPa | 60200 psi | |
| Tensile Strength, Yield | 290 MPa | 42100 psi | |
| Elongation at Break | 20% | 20% | in 200 mm |
| 24% | 24% | in 50 mm | |
| Bulk Modulus | 140 GPa | 20300 ksi | Typical for steel |
| Shear Modulus | 80.0 GPa | 11600 ksi | Typical for steel |
| Carbon, C | 0.21% | 0.21% | |
| Iron, Fe | 98% | 98% | |
| Manganese, Mn | 1.35% | 1.35% | |
| Phosphorous, P | <=0.40% | <=0.40% | |
| Silicon, Si | <=0.40% | <=0.40% | varies with plate thickness |
| Sulfur, S | 0.05% | 0.05% |
