Alloy tool steel classification of Japan JIS standard

Now the standard tool steel JIS series is determined by changes in 1956. To the 1956 standard is divided into carbon tool steel tool steel (SK), a special tool steel (SKS), tool steel (SKD), forging die steel (SKT), high-speed tool steel (SKH). To 1951, before the JES standard JIS standard also provides for cutting steel era (SKU), forging tool steel (FKU), but was abolished in 1953. 1956 under the name of alloy tool steel that is the SKS, SKD, SKT sum. But retained as a SKS, SKD, SKT and other marks. Now the classification is based on chemical composition or the use of mixed classification. Not convenient for users.
As the carbon content of carbon tool steel and uses a wide range of different and difficult to use classification, the world given the classification of independent projects, the U.S. AISI standard classification as a water-quenching tool steel. In addition, high-speed tool steel is also given the unique characteristics and special history. On alloy tool steel, the world divided into cold and hot working tool steel. JIS standard alloy tool steel cutting tools divided into seven Steel grade, impact resistant tool Steel grade with four, with eight cold-working die Steel grade, hot die Steel grade with 9, but the mark does not apply to this classification system method. Hope that soon the light of International Organization for Standardization (ISO) or the standard around the world to establish a reasonable standard system.

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Please direct Hong Chao(DongGuan) Mould & Technology Co., Ltd. service contact (hotline 0769 -82621066 / 82621088, the National Service Hotline :400-699-1286) for more on alloy tool steel classification of Japan JIS standard and high-quality mould steel (Japan Daido tool steel DC53_NAK80 Sweden ASSAB mould steel S136_VIKING, Germany Groditz mould steel, Japan Fuji high-speed steel, Japan's Hitachi mould steel, etc.) the selection, application, heat treatment and inventory and other related information.
Source: Hong Chao(DongGuan) Mould & Technology Co., Ltd. Technology Center
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