4340 - Chemical Composition
Explore the chemical composition of this product grade. Click an element to view its min/max composition values.
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4340
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Chemical Composition
| C | Mn | Mo | Cr | Ni | Cu | Ti | P | S | Si | V | Al | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Min | 0.380 | 0.600 | 0.150 | 0.700 | - | - | - | - | - | - | - | - |
| Max | 0.430 | 0.800 | 0.450 | 0.900 | 2.000 | - | - | 0.035 | 0.040 | 0.350 | - | - |
Mechanical Properties
| Tensile Strength | 1069 MPa min | 155,000 psi min |
| Yield Strength | 800 MPa min | - |
|   | 116,000 psi min | - |
| Total Elongation Under Load | 11.000 % | - |
| Hardness | 37 Max HRC | - |
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