HIGH-SPEED TOOL STEEL, MATERIAL FOR TOOLS, AND METHOD FOR PRODUCING MATERIAL FOR TOOLS

WIPO Patent Application WO/2017/104220

A1

Provided are: a high-speed tool steel having excellent hot workability, and excellent damage resistance when being made into various tools; a material for tools; and a method for producing a material for tools. The high-speed tool steel contains, in mass%, 0.9-1.2% of C, 0.1-1.0% of Si, 1.0% or less of Mn, 3.0-5.0% of Cr, 2.1-3.5% of W, 9.0-10.0% of Mo, 0.9-1.2% of V, 5.0-10.0% of Co, 0.020% or less of N, and the balance being Fe and impurities, wherein an M value calculated by a formula satisfies -1.5 ≤ M value ≤ 1.5. Formula: M value = -9.500 + 9.334[%C] - 0.275[%Si] - 0.566[%W] - 0.404[%Mo] + 3.980[%V] + 0.166[%Co], where the characters in brackets [] indicate the contained amounts (mass%) of the respective elements. The present invention also pertains to: a material for tools, which is obtained by using the high-speed tool steel; and a method for producing the material for tools.

JP2562049	[Title of the Invention] A method for producing a high-strength cold-rolled steel sheet having excellent local deformability.
JPH01138088	SEALING ALLOY FOR ALUMINA CERAMICS
JP4457673	Highly formable plated cold-rolled steel sheet for fuel tanks with excellent secondary processing brittleness and plating adhesion and its manufacturing method

FUKUMOTO SHIHO (JP)

PCT/JP2016/078954

June 22, 2017

September 29, 2016

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HITACHI METALS LTD (JP)

C22C38/00; C22C38/30

JP2000219935A	2000-08-08
JP2014208870A	2014-11-06
JPH0966305A	1997-03-11
JPH0941091A	1997-02-10

See also references of EP 3392360A4

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