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STEEL BARS

HEAT TREATABLE STEEL

Heat-treatable steels are in the mechanical construction steel range. They are characterized by carbon content usually in excess of 0.25%, and may or may not be alloys. Heat-treatable steels are used to fabricate parts that require a combination of strength and tenacity, with relatively uniform values throughout the cross section or down to a certain depth. These properties are attained by means of quenching and tempering, which comprise the heat-treatment process.

8640

CHARACTERISTICS

Medium hardenability. Has the best mechanical characteristics compared with other steel types in the same category.

APPLICATIONS

Medium to large parts that require a high level of strength and tenacity, such as arms and wheelends.

SIMILAR MATERIALS

COPANT 8640; SAE 8640; AISI 8640; UNS G86400; DIN 40NiCrMo2-2 (1.6546);

Chemical Composition (% BY WEIGHT)

CMnPSSiNiCrMoV
0,38 – 0,430,75 – 1,000,0300,0400,15 – 0,350,40 – 0,700,40 – 0,600,15 – 0,25-

THERMAL TREATMENT AND PROCESSING TEMPERATURES (°C)

Forging - Max.ReheatingNormalizationQuenchingQuenching MediumCase HardeningTempering
1.204 - 954815 - 875845 - 900830 - 855óleo--

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