Tool Steel

01 BS EN ISO 4957

Description:

O1 is a general purpose oil hardening tool steel. This manganese-chromiumtungsten steel is suitable for a wide range of cold work applications.

O1 tool steel is characterized by good machinability, good dimensional stability in hardening and a good combination of high surface hardness and toughness after proper heat treatment. These characteristics combine to give steel suitable for the manufacture of tooling with good tool life and production economy.

Applications include Cutting Tools for: Blanking, punching, piercing, cropping, shearing, trimming. Short cold shears, clipping and trimming tools. Forming Tools for: Bending, raising, drawing, rim rolling, spinning and flow forming, small coining dies, gauges, measuring tools, guide bushes, ejector pins, high duty small to medium drills and taps, small gear wheels, pistons, nozzles, cams.

Colour Code

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Related Specifications

Steel Number Steel Name Grade Bohler BS 970 1983
1.251 95MnWCr5 O1 K460 -

Typical Chemical Analysis - Reference only

C W Mn Cr
0.95 0.6 1.1 0.6
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Rounds Rounds Rounds Rounds Rounds Rounds Rounds Rounds
(mm) (mm) (mm) (mm) (mm) (mm) (mm) (mm)
20.00 35.00 50.00 65.00 90.00 120.00 150.00 180.00
25.00 40.00 55.00 70.00 100.00 130.00 160.00 200.00
30.00 45.00 60.00 80.00 110.00 140.00 170.00

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Disclaimer

All data provided is for information and guidance only. Information above is not for design purposes and comes without warranty or guarantee with respect to the subject matter or fitness for purpose.