POWDER HIGH-SPEED STEEL

To provide a powder high-speed steel having excellent toughness.SOLUTION: A powder high-speed steel is made up of an Fe-based alloy. The Fe-based alloy contains C: more than 1.0 mass% and 1.8 mass% or less, Mn: 0.10 mass% or more and 1.5 mass% or less, Cr: 6.0 mass% or more and 9.0 mass% or less, Mo...

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Bibliographische Detailangaben
Hauptverfasser: MIURA KODAI, SAWADA TOSHIYUKI, YAMAMOTO TAKAHISA, OCHI RYOSUKE
Format: Patent
Sprache:eng ; jpn
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Zusammenfassung:To provide a powder high-speed steel having excellent toughness.SOLUTION: A powder high-speed steel is made up of an Fe-based alloy. The Fe-based alloy contains C: more than 1.0 mass% and 1.8 mass% or less, Mn: 0.10 mass% or more and 1.5 mass% or less, Cr: 6.0 mass% or more and 9.0 mass% or less, Mo: 2.0 mass% or more and 6.0 mass% or less, V: 1.0 mass% or more and 4.0% or less, Co: 1.0 mass% or more and 5.0 mass% or less, and inevitable impurities. The Fe-based alloy further contains Si: more than 1.0 mass% and 2.0 mass% or less and/or Al: 0.10 mass% or more and 1.5 mass% or less.SELECTED DRAWING: Figure 1 【課題】靱性に優れた粉末高速度工具鋼の提供。【解決手段】粉末高速度工具鋼の材質は、Fe基合金である。このFe基合金は、C:1.0質量%を超えて1.8質量%以下Mn:0.10質量%以上1.5質量%以下Cr:6.0質量%以上9.0質量%以下Mo:2.0質量%以上6.0質量%以下V:1.0質量%以上4.0%以下Co:1.0質量%以上5.0質量%以下及び不可避的不純物を含有している。このFe基合金はさらに、Si:1.0質量%を超えて2.0質量%以下及び/又はAl:0.10質量%以上1.5質量%以下を含有している。【選択図】図1