Nova Steel Corporation is one of the leading SAE 4340 Round Bars Manufacturers, Supplier, and Dealer in India. Our high-quality range of SAE 4340 Round Bars is exclusively designed for steel factories, petrochemical industry, fire protection systems, chemical industries, shipping/shipment industries, etc. SAE 4340 Round Bars includes nickel for higher overall hardness and superb through hardening. SAE 4340 is alloyed for as-rolled core strength but can be readily carburized.
Standard | AISI / SAE 4140 |
UNS | – |
BS 970 | 708M40, 708A42, 709M40, En19, En19C |
UNI | 41CrMo4, 38CrMo4 (KB), G40 CrMo4, 42CrMo4 |
WERKSTOFF NR. | 41CrMo4, 42CrMo4, 42CrMoS4, 43CrMo4 |
JIS | SCM 440, SCM 440H, SNB 7, SCM 4M, SCM 4 |
EN # | 1.7223, 1.7225, 1.7227, 1.3563 |
EN name | 42CrMo4 |
Properties | Metric | Imperial |
---|---|---|
Tensile strength | 655 MPa | 95000 psi |
Bulk modulus (typical for steel) | 140 GPA | 20300 ksi |
Shear modulus (typical for steel) | 80 GPA | 11600 ksi |
Yield strength | 415 MPa | 60200 psi |
Poisson’s ratio | 0.27-0.30 | 0.27-0.30 |
Elastic modulus | 190-210 GPa | 27557-30458 ksi |
Elongation at break (in 50 mm) | 25.70% | 25.70% |
Hardness, Knoop (converted from Brinell hardness) | 219 | 219 |
Hardness, Brinell | 197 | 197 |