Tool Steel

Published on December 2016 | Categories: Documents | Downloads: 16 | Comments: 0 | Views: 155
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Secondary Refiniing

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Oil-hardening cold-work steels –
O group
High-carbon,
high-chromium, cold-work steels – D
Shock-resisting steels – S
group
Low-Alloy
special-purpose tool steels – L group
Low-carbon mold steels – P group
Water-hardening tool steels – W
group
(a) All steels except group W contain 0.25 max Cu, 0.03 max P, and
0.03 max S; group W steels contain 0.20 max Cu, 0.025 max P, and
0.025 max S. Where specified, sulfur may be increased to 0.06 to
0.15% to improve machinability of group A, D, H, M, and T steels.
(b) Available in several carbon ranges.
(c) Contains free graphite in the microstructure.
(d) Optional.
(e) Specified carbon ranges are designated by suffix numbers.

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