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STEEL BARS

CASE-HARDENING STEEL

Commonly used to enrich the surface carbon content of steel that case hardening provides. This is intended to produce a high-hardness, wear-resistant surface supported by a tenacious core.

20MnCr5

CHARACTERISTICS

Medium core hardenability at the core and intermediate surface hardenability;

APPLICATIONS

Crowns and pinions, truck and tractor gears, crossheads and driveshafts;

SIMILAR MATERIALS

SAE 5120; AFNOR 20MC5; DIN 17210;

Chemical Composition (% BY WEIGHT)

CMnPSSiNiCrMoV
0,17 – 0,221,10 – 1,400,0350,0350,40-1,00 – 1,30--

THERMAL TREATMENT AND PROCESSING TEMPERATURES (°C)

Forging - Max.ReheatingNormalizationQuenchingQuenching MediumCase HardeningTempering
1.150 - 850830 - 850930 - 950780 - 860óleo910 - 930150 - 230

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