Year1
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- Φ3 Φ4 Φ5 Φ6 Φ7 Φ8 Φ9 Φ9.5 Φ10 Φ11 Φ12 Φ12.7 Φ14Φ15 Φ16Φ17 Φ18 Φ19 Φ20 Φ21Φ22 Φ23 Φ24 Φ25Φ26Φ27 Φ28 Φ
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It is a Japanese tool steel brand, produced by Hitachi and Datong Steel Works. The Hitachi product name (the latest improved version is called Datong Steel Co., Ltd. trade name). Both have facilities in mainland China Factory, the most well-known in the industry, and the highest price. This steel is an air-cooled hardening cold work die steel widely used internationally. It is smelted in an electric furnace and re-dissolved by electroslag. It has high purity, better toughness, uniform structure, and has Good high temperature strength, toughness and high temperature fatigue resistance, able to withstand sudden temperature changes.
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