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ASTM A36 structural steel material is designated by mechanical properties. For example, A36 steel plates and bars must have a minimum yield strength of 36,000 pounds per square inch. While there are some chemical composition requirements that A36 steel must adhere to, the most important characteristic of ASTM A36 structural steel material is the yield strength requirement.
ASTM A36 Structural Steel Material Properties:
| Mechanical Properties | Imperial | Metric |
| Ultimate Tensile Strength | 58,000 – 79,800 psi | 400 – 550 MPa |
| Yield Tensile Strength | 36,300 psi | 250 MPa |
| Elongation at Break (in 200 mm) | 20.0% | 20.0% |
| Elongation at Break (in 50 mm) | 23.0% | 23.0% |
| Modulus of Elasticity | 29,000 ksi | 200 GPa |
| Bulk Modulus (Typical for steel) | 20,300 ksi | 140 GPa |
| Poissons Ratio | 0.260 | 0.260 |
| Shear Modulus | 11,500 ksi | 79.3 GPa |
ASTM A36 structural steel material can have ultimate tensile strengths from 58,000 to 79,800 psi. The exact ultimate tensile strength is determined by a variety of factors such as ASTM A36 structural steel material chemical composition and forming method. ASTM A36 structural steel material is relatively ductile and can elongate to around 20% of its original length when tensile testing. Its ductility and strength also give ASTM A36 structural steel material excellent impact strength at room temperature.
