Title:
HIGH SPEED STEEL PRODUCED BY POWDER OR GOLD
Document Type and Number:
Japanese Patent JP3759323
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To obtain a high speed steel having excellent high hardness and corrosion resistance and suitable for a gear cutting tool by making an alloy composition made of a specific composition prepared by combining W, No, V and Co.
SOLUTION: The high speed steel contains by wt.% C ≤2.4-3.9, Mn of up to 0.8, Si of up to 0.8, Cr of 3.75-4.75, W of 9.0-11.5, Mo of 4.75-10.75, V of 4.0-10.0, Co of 8.5-16.0, selectively existing Nb of 2.0-4.0 and balance Fe. This composition contains preferably C≤2.6-3.5, Cr of 3.75-4.75, W of 9.0-11.5, Mo of 9.50-10.75, V of 4.0-6.0, Co of 14.00-16.00 and Nb of 2.0-4.0. More preferably C≤3.0-3.3, Mn of max. 0.5, Si of max. 0.5, Cc of 4.2-4.6, W of 10.5-11.0, Mo of 1.0-10.5, V of 5.0-5.5, Co of 14.5-15.0 and Nb of 2.8-3.2.
Inventors:
Andrei El. Wozietsky
William Stasco
William Stasco
Application Number:
JP28787498A
Publication Date:
March 22, 2006
Filing Date:
October 09, 1998
Export Citation:
Assignee:
CRUCIBLE MATERIALS CORPORATION
International Classes:
C21D6/00; B22F3/15; C22C38/00; B22F9/08; C22C33/02; C22C38/12; C22C38/36; C22C38/56; C23C30/00; (IPC1-7): C22C38/00; C21D6/00; C22C38/56
Domestic Patent References:
| JP2153047A | ||||
| JP1043017B2 | ||||
| JP9041102A | ||||
| JP7087931B2 |
Attorney, Agent or Firm:
Yohei Kinoshita
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