28Mn6
Alloy Steel28Mn6
(EN 10250). Nominal values—confirm mill certificate.
Chemical Composition (%)
| C | 0.25 |
|---|---|
| MN | 5.1 |
| P | 0.035 |
| S | 0.035 |
Mechanical Properties
Tensile:≥620 MPa;Yield:≥355 MPa;Elong:≥18%;RA:≥45%
Chinese Standard
EN 10250 28Mn6
Available Forms
Bar,Plate
Uses
Medium-carbon grade for machine parts such as gears, crankshafts, axles, connecting rods, spindles and forgings that need a balance of strength, toughness and machinability. Commonly supplied as bar, plate, sheet, tube and forging.
Heat Treatment
Austenitize at 820–870 °C (oil or water quench depending on section) and temper at 400–650 °C to the required strength/toughness balance.
Precautions
Weldable with standard procedures; preheat may be needed for thick sections or higher-carbon/ alloy grades. Protect from decarburization during heating (controlled atmosphere or protective coating).
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