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Steel hardness conversion guide

Drawings and customer specifications will often quote hardness ranges for the steel required. Dependant upon the source, these can appear according to a variety of scales. The chart below gives approximate conversions between different scales. This should be a guide

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Used for springs, saws, clutch plates and valves etc. CS100 can be cut by laser, waterjet etc. It is generally used where higher hardness’s and wear resistance is required  or where a higher strength is required in lower thickness material.

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