COLD WORK DIE STEEL, DIE, AND METHOD FOR PRODUCTION OF COLD WORK DIE STEEL
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United States of America Patent
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Issued Date -
Mar 25, 2010
app pub date -
Oct 16, 2007
filing date -
Oct 17, 2006
priority date (Note) -
Abandoned
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Abstract
The invention relates to a cold work die steel containing, by mass %, C: 0.20 to 0.60%, Si: 0.5 to 2.00%, Mn: 0.1 to 2%, Cr: 3.00 to 9.00%, Al: 0.3 to 2.0%, Cu: 1.00 to 5%, Ni: 1.00 to 5%, Mo: 0.5 to 3% and/or W: 2% or less (including 0%), S: 0.10% or less (not including 0%), in which the following requirements (1) to (3) are satisfied {wherein each square bracket [ ] means a content (%) of each element}:[Cr]×[C]≦3.00, (1)[Cu]/[Ni]:0.5 to 2.2, (2)[Mo]+0.5×[W]:0.5 to 3.0%, (3)with the remainder being iron and unavoidable impurities; and to a die obtained by the using the same. The invention also relates to a production method for a cold work die steel.
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