Silver Steel Round Imperial Water Hardened

• Silver Steel is a high carbon content alloy that has high wear resistance and hardenability.
• The chromium content adds to the strength and hardness.
• It is machineable and is a popular material for a large range of applications.

Silver Steel BS1407 Chemical Composition

Analysis Range (%) Typical Analysis (%).

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”

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 the 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.

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