1. 45——Quality carbon structural steel is the most commonly used medium carbon quenched and tempered steel.

Main characteristics: The most commonly used medium carbon quenched and tempered steel has good comprehensive mechanical properties, low hardenability and easy cracking during water quenching. Small parts should be treated with quenching and tempering, and large parts should be normalized. Application examples: Mainly used to manufacture high-strength moving parts, such as turbine impellers and compressor pistons. Shafts, gears, racks, worms, etc. Welded parts are preheated before welding and stress relief after welding.

2. Q235A (A3 steel) - the most commonly used carbon structural steel.

Main features: High plasticity, toughness and weldability, cold stamping performance, and a certain strength, good cold bending performance. Application examples: Widely used for parts and welded structures that are generally required. Such as small rods, connecting rods, pins, shafts, screws, nuts, ferrules, brackets, machine bases, building structures, bridges, etc.

3. 40Cr - one of the most widely used steel grades, is an alloy structural steel.

Main characteristics: After quenching and tempering treatment, it has good comprehensive mechanical properties, low temperature impact toughness and low notch sensitivity, good hardenability, high fatigue strength when oil cooling, and easy to shape parts when water cooling Cracking, cold bending plasticity, good tempering or quenching and tempering, but poor weldability, easy to crack, preheated to 100 ~ 150 ° C before welding, generally used in quenched and tempered state, can also Carbonitriding and high frequency surface quenching treatment.

4. HT150 - gray cast iron. Application examples: gear box, machine bed, box, hydraulic cylinder, pump body, valve body, flywheel, cylinder head, pulley, bearing cover, etc.

5. 35 - Common materials for various standard parts and fasteners

Main characteristics: The strength is proper, the plasticity is good, the cold plasticity is high, and the weldability is acceptable. In the cold state, it can be partially uplifted and brushed. Low hardenability, normalizing or quenching and tempering application examples: Suitable for manufacturing small-section parts, parts that can withstand large loads: such as crankshafts, levers, connecting rods, shackles, etc., various standard parts, fasteners

6. 65Mn - a commonly used spring steel. Application examples: small size various flat, round spring, seat spring, spring spring, can also be made into spring ring, valve spring, clutch reed, brake spring, cold coil coil spring, circlip and so on.

7. 0Cr18Ni9 - the most commonly used stainless steel (US steel 304, Japan steel SUS304) Features and applications: As the most widely used stainless steel, such as food equipment, general chemical equipment, equipment for industrial use

8. Cr12 - commonly used cold work die steel (US steel D3, Japan steel SKD1)

Characteristics and Applications: Cr12 steel is a widely used cold work die steel, which is a high carbon and high chromium type of Leysite steel. The steel has good hardenability and good wear resistance; since the carbon content of Cr12 steel is as high as 2.3%, the impact toughness is poor, brittle and easy to form uneven eutectic carbide; Cr12 steel due to It has good wear resistance and is used to manufacture punches and die, drill sleeves and gauges for cold die, punch, blanking die, cold die, cold extrusion die which are required to be subjected to low impact load and high wear resistance. , drawing die, stamping die, twisting plate, drawing die, cold stamping die for powder metallurgy, etc.

9. DC53 - commonly used Japanese imported cold work die steel. Characteristics and application: High strength and toughness cold work die steel, steel grade of Japan Datong Special Steel Co., Ltd. After high temperature tempering, it has high hardness, high toughness and good wire cutting property. For precision cold stamping die, drawing die, twisting die, cold die cutting, punch, etc. 10, SM45 - ordinary carbon plastic die steel (Japan Steel No. S45C)

10. DCCr12MoV - wear-resistant chrome steel. Domestic. Compared with Cr12 steel, the carbon content is low, and Mo and V are added, the carbide unevenness is improved, MO can reduce the segregation of carbide and improve the hardenability, and V can refine the grain to increase the toughness. Hardenability, the section can be completely hardened below 400mm, can maintain good hardness and wear resistance at 300~400°C, has higher toughness than Cr12, small volume change during quenching, and high wear resistance and Good comprehensive mechanical properties. Therefore, it is possible to manufacture various molds with large cross-sections, complex shapes and high impact, such as ordinary drawing dies, punching dies, dies, blanking dies, trimming dies, piping dies, and drawing dies. , cold extrusion die, cold cut scissors, circular saw, standard tools, measuring tools, etc.

11. SKD11 - tough chrome steel. Hitachi plant production in Japan. Technically improve the casting structure in steel, refine the grain. Compared with Cr12mov, the toughness and wear resistance are improved. The service life of the mold is prolonged.

12. D2——High carbon and high chromium cold work steel, made in the USA. It has high hardenability, hardenability, wear resistance, high temperature oxidation resistance, good anti-corrosion ability after quenching and polishing, and small heat treatment deformation. Manufacturing a variety of cold-working dies, tools and gauges that require high precision and long life, such as tensile dies, cold extrusion dies, cold shear knives, etc.

13. SKD11 (SLD) - non-deformable tough high-chromium steel. Japan Hitachi plant production. Due to the increase in MO and V content in steel, improving the cast structure in steel, refining the grain and improving the carbide morphology, The toughness (bending strength, deflection, impact toughness, etc.) of this steel is higher than SKD1, D2, and the wear resistance is also increased, and it has higher tempering resistance. It has been proved that the life of this steel mold is better than that of Cr12mov. Improve. It is often used to manufacture molds with high requirements, such as tensile molds, impact molds, etc.

14. DC53——High toughness and high chromium steel, produced by Datong, Japan. Heat treatment hardness is higher than SKD11. High temperature (520-530) can reach 62-63HRC high hardness after tempering, and DC53 exceeds SKD11 in strength and wear resistance. The toughness is twice that of SKD11. The toughness of DC53 is rarely cracked and cracked in the cold-working mold manufacturing. The service life is greatly improved. The residual stress is small. The residual stress is reduced by the high temperature return. The crack and deformation after the wire cutting process are obtained. Suppression. Machinability and abrasiveness exceed SKD11. Used in precision stamping die, cold forging, deep drawing die, etc.

15. SKH-9 - general-purpose high-speed steel with high wear resistance and toughness. Hitachi plant production in Japan. Used for cold forging die, slitting machine, drill bit, reamer, punch, etc.

16. ASP-23——Powder metallurgy high speed steel, made in Sweden. Carbide distribution is extremely uniform, wear resistant, high toughness, easy to process, stable heat treatment size. Used for punch, deep drawing die, drilling die, milling cutter And long-life cutting tools such as cutting blades.

17. P20 - the general requirements of the size of the plastic mold, the United States. Can be electrically etched. Pre-hardened HB270-300. Quenching hardness HRC52.

18. 718 - high-demand plastic mold, made in Sweden. Especially electro-erosion operation. Pre-hardened HB290-330. Quenching hardness HRC52

19. Nak80——High-mirror, high-precision plastic mold, produced by Datong, Japan. Pre-hardened HB370-400. Quenching hardness HRC52

20. S136——Anti-corrosion and mirror-polished plastic mold, made in Sweden. Pre-hardened HB<215. Hardened hardness HRC52.

21. H13 - common common die-casting mold for aluminum, zinc, magnesium and alloy die-casting. Hot stamping die, aluminum extrusion die,

22. SKD61 - advanced die-casting mold, produced by Hitachi, Japan, with electro-hydraulic re-dissolution technology, has a significant improvement in service life over H13. Hot stamping die, aluminum extrusion die,

23. 8407 - Advanced Die Casting Mould, Made in Sweden. Hot Stamping Die, Aluminum Extrusion Die.

24. FDAC——added sulfur to enhance its easy cutting property. It has a pre-hardened hardness of 338-42HRC. It can be directly engraved and processed without quenching and tempering. It is used for small batch molds, simple molds, various resin products. Sliding parts, short-term mold parts, zipper molds, eyeglass frame molds.