1. Cold working die steel
Cold working die steel is mainly used to manufacture the die for pressing the workpiece in cold state. Such as cold punching die, cold stamping die, cold drawing die, stamping die, cold extrusion die, thread pressing die and powder pressing die. The range of cold working die steels is very wide, from various carbon tool steels, alloy tool steels, high speed tool steels to powder high speed tool steels and powder high alloy die steels.
2. Hot working die steel
Hot working die steel is mainly used in the manufacture of high temperature workpiece pressure processing die. Such as hot forging die, hot extrusion die, die casting die, hot upsetting die, etc. The commonly used hot working die steels are: medium and high carbon alloy die steels with Cr, W, Mo, V and other alloying elements; High alloy austenitic heat resistant die steels are sometimes used for hot working die steels with special requirements.
3. Plastic die steel
Because there are many kinds of plastic, the requirements for plastic products are also very different, and the materials for manufacturing plastic molds are also put forward a variety of different sexual requirements. Therefore, many industrially developed countries have formed a wide range of plastic mold steel series. It includes carbon structural steel, carburized plastic die steel, pre-hardened plastic die steel, age-hardened plastic die steel, corrosion-resistant plastic die steel, easily cut plastic die steel, integral hardened plastic die steel, martensitic aged steel and mirror polishing plastic die steel, etc.
German standard DIN
Code:
1.2738: Low carbon, high alloy (P20 - Plastic Molding Steel)
1.2311: Lowcarbon, high alloy (P20 - Plastic Molding Steel)
1.2312: Lowcarbon, high alloy, free Machine (P20- Easy Cutting)
1.2083: StainlessSteel (420 - acid resistant steel)
1.2316: Highperformance stainless Steel (420 - High acid resistant steel)
1.2343: Chromiumbase (Chromi-H11 -- Hot Work Steel)
1.2344: Chromiumbase (Chromi-H13 -- Hot Work Steel)
1.2510: Lowalloy steel (O1-oil steel)
1.2379: Highcarbon, high chromium steel (D2 -- Chromium steel)
JIS
Code:
SxxC: Plain Carbon steel(Yellow card - S55C)
SUSxx: Stainless Steel (Stainless Steel - 420)
SCrx: Chromium Steel
SCMx: Chromium Molybdenum Steel (P20)
SKx: Carbon Tool Steel
SKSx: Low Alloy Steel (O1)
SKD11: MediumHigh Alloy Steel(Chrome steel - D2)
SKD6: Medium High Alloy Steel(H11)
SKD61: Medium High Alloy Steel(H13)
SKHxx: High Speed Steel (M 2)
SUMx: Free Cutting Steel
SUJx: Bearing Steel