The 24 Most Commonly Used Metal Materials For Mold Processing
Date: Nov,01 2021 View:
The 24 Most Commonly Used Metal Materials For Mold Processing
1.45-high-quality carbon structural steel, the most commonly used medium-carbon quenched and tempered steel
Main features: The most commonly used medium-carbon quenched and tempered steel, with good comprehensive mechanical properties, low hardenability, and easy to crack during water quenching. Small parts should be quenched and tempered, and large parts should be normalized. Application examples: Mainly used to manufacture high-strength moving parts, such as turbine impellers, compressor pistons, shafts, gears, racks and worms. Pay attention to preheating before welding and annealing for stress relief after welding.
2.Q235A (A3 steel)-the most commonly used carbon structural steel
Main features: high plasticity, toughness and welding performance, cold stamping performance, certain strength and good cold bending performance. Application examples: Widely used in parts and welded structures with general requirements. Such as tie rods, connecting rods, pins, shafts, screws, nuts, ferrules, brackets, machine seats, building structures and bridges that are not under strong force.
3.40Cr-one of the most widely used steel grades, belongs to alloy structural steel
Main features: 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-cooled, and easy parts with complex shapes when water-cooled. Cracks occur. Cold bending plasticity is moderate, good machinability after tempering or quenching and tempering, but poor weldability, and easy to crack. It should be preheated to 100～150℃ before welding. Generally used in quenched and tempered state, it can also be used for carbon nitrogen Co-permeation and high-frequency surface hardening treatment. Application examples: After quenching and tempering, it is used to manufacture medium-speed and medium-load parts, such as machine tool gears, shafts, worms, spline shafts and thimble sleeves. Grinding parts, such as gears, shafts, spindles, crankshafts, spindles, sleeves, pins, connecting rods, screws and nuts, intake valves, etc.; after quenching and tempering at medium temperature, they are used to manufacture heavy-duty, medium-speed impact Parts, such as oil pump rotors, sliders, gears, spindles and collars, etc.; after quenching and low temperature tempering, they are used to manufacture heavy-duty, low-impact, and wear-resistant parts, such as worms, spindles, shafts and collars, etc.; carbon After nitriding treatment, transmission parts with larger size and higher low-temperature impact toughness are manufactured, such as shafts, gears, etc.
4. HT150-gray cast iron
Application examples: gear box body, machine bed, box body, hydraulic cylinder, pump body, valve body, flywheel, cylinder head, pulley and bearing cover, etc.
5.35-Commonly used materials for various standard parts and fasteners
Main features: proper strength, good plasticity, high cold plasticity, acceptable weldability. Partial upsetting and drawing can be done in cold conditions. Low hardenability, use after normalizing or quenching and tempering. Application examples: suitable for manufacturing parts with small cross-sections that can bear larger loads, such as crankshafts, levers, connecting rods, hooks and loops, various standard parts and fasteners.
6. 65Mn-commonly used spring steel
Application examples: all kinds of small size flat springs, round springs, seat cushion springs, spring springs, and can also be made into spring rings, valve springs, clutch springs, brake springs, cold rolled coil springs and circlips.
7. 0Cr18Ni9-the most commonly used stainless steel (American steel number 304, Japanese steel number SUS304)
Characteristics and applications: It is the most widely used as stainless heat-resistant steel, such as food equipment, general chemical equipment, etc.
8. Cr12-commonly used cold work die steel (American steel number D3, Japanese steel number SKD1)
Characteristics and applications: Cr12 steel is a widely used cold-work die steel, which is a high-carbon and high-chromium ledeburite steel. The steel has good hardenability and good wear resistance; because the carbon content of Cr12 steel is as high as 2.3%, it has poor impact toughness, easy brittleness, and easy formation of uneven eutectic carbides; Cr12 steel is due to It has good wear resistance and is mostly used to manufacture cold punches, punches, blanking dies, cold heading dies, punches and dies of cold extrusion dies, drill sleeves, gauges that require high wear resistance with less impact load , Wire drawing die, stamping die, thread rolling board, deep drawing die and cold press die for powder metallurgy, etc.
9. DC53-commonly used cold work die steel imported from Japan
Features and applications: high-strength and toughness cold-work die steel, Japanese Datong Special Steel Co., Ltd. steel grade. After high temperature tempering, it has high hardness, high toughness and good wire cutting performance. Used for precision cold stamping dies, drawing dies, thread rolling dies, cold blanking dies and punches, etc.
10. DCCr12MoV-wear-resistant chromium steel
Domestically produced, the carbon content is lower than that of Cr12 steel, and with the addition of Mo and V, the uneven carbides have been improved. Mo can reduce carbide segregation and improve hardenability, and V can refine grains and increase toughness. This steel has high hardenability, the cross section can be completely hardened below 400mm, and it can still maintain good hardness and wear resistance at 300~400℃. It has higher toughness than Cr12. The volume change during quenching is small. It also has high wear resistance and good comprehensive mechanical properties. Therefore, various molds with large cross-sections, complex shapes, and withstand greater impact can be manufactured, such as ordinary drawing dies, punching dies, punching dies, blanking dies, trimming dies, hemming dies, wire drawing dies, cold extrusion dies, Cold cutting scissors, circular saws, standard tools and measuring tools, etc.
11. SKD11-tough chromium steel
Produced by Hitachi, Japan. Technically improve the casting structure in steel, refine the crystal grains, improve the toughness and wear resistance of Cr12MoV, and extend the service life of the mold.
12. D2-high carbon and high chromium cold work steel
Made in the United States. It has high hardenability, hardenability, wear resistance, high temperature oxidation resistance, and good corrosion resistance after quenching and polishing. Heat treatment deformation is small. It is suitable to manufacture all kinds of cold work dies, tools and measuring tools that require high precision and long life, such as drawing dies, cold extrusion dies and cold shearing knives.
13. SKD11 (SLD)-non-deformation and toughness high chromium steel
Produced by Hitachi, Japan. As the content of Mo and V in the steel increases, the casting structure in the steel is improved, the crystal grains are refined, and the carbide morphology is improved. Therefore, the strength and toughness of this steel (bending strength, deflection, impact toughness, etc.) are better than SKD1, D2 is high, abrasion resistance is also increased, and it has higher tempering resistance. Practice has proved that the life of this steel mold is longer than that of Cr12MoV. Often manufacturing demanding molds, such as drawing molds, impact grinding wheel molds, etc.
14. DC53-high toughness and high chromium steel
Produced by Datong Co., Ltd., Japan. The heat treatment hardness is higher than SKD11. After tempering at high temperature (520~530)℃, it can reach high hardness of 62~63HRC. In terms of strength and wear resistance, DC53 surpasses SKD11, and its toughness is twice that of SKD11. The toughness of DC53 rarely appears cracks and cracks in cold work mold manufacturing, which greatly improves the service life. The residual stress is small, and the residual stress is reduced after high temperature. Because the cracks and deformation after wire cutting are suppressed, the machinability and abrasiveness exceed SKD11, and it is used for precision stamping dies, cold forging and deep drawing dies.
15. SKH-9-general high-speed steel with wear resistance and toughness
Produced by Hitachi, Japan. Used for cold forging dies, strip cutting machines, drills, reamers and punches, etc.
16. ASP-23-powder metallurgy high speed steel
Made in Sweden. Carbide distribution is extremely uniform, wear resistance, high toughness, easy processing, stable heat treatment size. Used for various long-life cutting tools such as punches, deep drawing dies, drill dies, milling cutters and shear blades.
17. P20——Generally required size plastic mold
Made in the United States. It can be operated by electro-erosion. The ex-factory state is pre-hardened HB270~300, and the quenching hardness is HRC52.
18.718-high-demand large and small plastic molds
Made in Sweden. It can be operated by electro-erosion. The ex-factory state is pre-hardened HB290~330, and the quenching hardness is HRC52.
19. Nak80-high mirror, high-precision plastic mold
Produced in Datong, Japan. The ex-factory state is pre-hardened HB370~400, and the quenching hardness is HRC52.
20. S136-anti-corrosion and mirror-polished plastic mold
Made in Sweden. The ex-factory state is pre-hardened HB<215, and the quenching hardness is HRC52.
21. H13-common die-casting mold
Used for aluminum, zinc, magnesium and alloy die-casting, hot stamping dies, aluminum extrusion dies, etc.
22. SKD61-Advanced Die Casting Mould
Produced by Hitachi, Japan. The electro-ballast remelting technology has significantly improved service life than H13. Used for hot stamping dies and aluminum extrusion dies.
23. 8407-Advanced Die Casting Mould
Made in Sweden. Used for hot stamping dies and aluminum extrusion dies.
24. FDAC-added sulfur to enhance its ease of cutting
The factory pre-hardened hardness is HRC38~42, which can be directly engraved and processed without quenching and tempering. Used for small batch molds, simple molds, various resin products, sliding parts, and mold parts with short delivery times. Such as zipper molds, glasses frame molds, etc.
