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Special Steels

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Micron Hard

1.Unground diameter and tolerance (mm)

Material Dimension Tolerance Surface
P/M high-speed steel Ø 0.04 0.4 ±0.003 Barrel finish
Bright annealed finish
Cemented carbide Ø 0.4 ±0.05 Sintered
Ø 0.6 ±0.07
Ø 0.8 ±0.10

2.Unground length and tolerance (mm)

Material Dimension Tolerance Remarks
P/M high-speed steel 10 80 ±0.1 Correspondence possible in any size depending on the tolerance within the specified length range.
80 150 ±0.5
150 600 ±3
Cemented carbide 300 320 ±5 Sintered
Shear cutting

3.Ground diameter and tolerance (mm)

Material Shape Wire diameter Diameter tolerance Out-of-round
P/M high-speed steel Straight Ø 0.04 0.4 ±0.002 0.005
Taper Tip Ø 0.05
End Ø 0.20 0.4
Stepped
Ball fook Ø 0.2 0.4

Cemented carbide Straight Ø0.05 0.5 ±0.002 0.005
Taper Tip Ø0.05
End Ø0.20 0.7
Stepped

4.Ground (straight) length and tolerance (mm)

Material Length Tolerance Remarks
P/M high-speed steel 10 80 ±0.1 Correspondence possible in any size depending on the tolerance within the specified length range.
80 150 ±0.5
150 600 ±3
Cemented carbide 10 80 ±0.1 Correspondence possible in any size depending on the tolerance within the specified length range.
80 150 ±0.5
150 320 ±2