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Detroit Flame Hardening - Materials

The degree of hardness depends on the chemical analysis of the material, with carbon being the principal controlling element. When heating and quenching rates are accurately controlled, any ferrous material, which can be furnace hardened, can be flame hardened to a higher degree of hardness.

In choosing a material, availability, cost, hardness desired and machine-ability are factors to consider. Our technical staff can advise you and discuss specific applications.

Tables:

| Effects of flame hardening on steels |
| Hardness range of plain carbon steels |
| Typical hardness curve for flame hardened medium carbon steels |
| Metal hardness conversion numbers (approximate) |

Effects of flame hardening on steels

*fatigue proof, stress proof

Hardness range of plain carbon steels
Flame hardened to depth of one-eighht inch

Typical hardness curve for flame hardened medium carbon steels

Metal hardness conversion numbers (approx.)