Silver Steel - Round - Metric - Water Hardening, 1 Metre Lengths

Water Hardening, 1 Metre Lengths

Silver Steel BS1407 Chemical Composition

Analysis Range (%) Typical Analysis (%) C .95/1.25 1.13 Si .40 max .22 Mn .25 / .45 .37 P .045 max .014 S .045 max .018 Cr Cr. .35 / .45 .43 Silver Steel BS1407 Size Range

Metric Imperial Diameter Range: 2mm - 50mm 1/16” - 2”

Silver Steel BS1407 Chemical Composition

Diameter Tolerance < 1” ± 0.00025" 1” - 2” ± 0.0005" < 25mm + 0/-0.015mm 25mm - 50mm + 0/-0.025mm The surface finish is better than 25µ inch (0.6 microns) cla.

Silver Steel Hardening

Heat slowly to 760 - 800°C using the upper end of the temperature range for lower carbon contents and lower end of temperature range for higher carbon contents. Austenitize until the temperature is uniform. Quench into well agitated water.

The approximate quench hardness is 65 to 69 Rc.

Silver Steel Tempering

Temper immediately after hardening preferably before the tool reaches room temperature. Temper for a minimum of 1 hour at temperatures between 180 - 350°C, dependent upon the final hardness required.