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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.

4320

CHARACTERISTICS

Intermediate case-hardening depth.

APPLICATIONS

Automobile and tractor gears, U-joints and drive chains.

SIMILAR MATERIALS

COPANT 4320; SAE 4320; AISI 4320; UNS G43200; DIN 15CrNi6 (1.5919); AFNOR NC 6;

Chemical Composition (% BY WEIGHT)

CMnPSSiNiCrMoV
0,17 – 0,220,45 – 0,650,45 – 0,650,0400,15 – 0,351,65 -2,000,40 – 0,600,20 - 0,30-

THERMAL TREATMENT AND PROCESSING TEMPERATURES (°C)

Forging - Max.ReheatingNormalizationQuenchingQuenching MediumCase HardeningTempering
1.100 – 850830 - 860900 - 955815 - 845água900 - 925150 - 200

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