ArcelorMittal OPTIM 800MC
OtherArcelorMittal OPTIM 800MC
Proprietary/trade-name steel grade ArcelorMittal OPTIM 800MC
Chemical Composition (%)
| C | 0.04 |
|---|---|
| SI | 0.1 |
| MN | 0.5 |
| NB | 0 |
| TI | 0 |
| P | 0.025 |
| S | 0.015 |
Applications
Manufacturer proprietary steel grade (trade name) per maker specification.
Available Forms
Bar, plate, sheet, tube, forgings, strip, wire, powder
Uses
Carburizing (case-hardening) steel with low carbon core for toughness and a hard, wear-resistant surface after carburizing. Used for gears, camshafts, pinions, spline shafts, bushings and transmission parts subjected to fatigue and surface wear.
Heat Treatment
Typically normalized (880–920 °C, air cool) or carburized (900–930 °C) for case-hardening grades, then quenched and tempered at 150–200 °C. Carburize 900–930 °C, direct/intake quench, temper 150–200 °C; useful case depth 0.5–1.5 mm.
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). Machine the core stock before surface hardening; leave grinding allowance for the hardened case.
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