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24 kinds of commonly used machinery steel properties and USES
Huanshi Electromechanical2016-05-12Browse: 643
1, 45 high quality carbon structural steel, carbon quenched and tempered steel is the most commonly used
Main features: the most commonly used in carbon quenched and tempered steel, good comprehensive mechanical properties, low hardenability, water quenching crack easily. Small pieces of appropriate USES conditioning treatment, large pieces of appropriate USES normalizing treatment. Application, for example: mainly used in the manufacture of high strength of moving parts, such as turbine impeller, the compressor piston. Shaft, worm gear, rack, etc. Weldments note preheating before welding, eliminating stress annealing after welding.
2, Q235A (A3 steel) - the most commonly used carbon structural steel
Main features: high plasticity, toughness and weldability, cold stamping performance, as well as a certain strength, good cold bending performance. Application, for example: widely used in the general requirements of parts and welding structure. Such as stress not pull rod, connecting rod, pin, shaft, screw, nut, ring, stand, stand, building structures, Bridges, etc.
3, 40 cr - one of the most widely used steel, alloy structural steel
Main features: after tempering treatment, has the good comprehensive mechanical properties, low temperature impact toughness, and low notch sensitivity, good hardenability, oil cooling can get higher fatigue strength, water-cooled complex shape parts easy to generate crack, plastic medium, cold bending tempered or quenched and tempered after cutting workability is good, but the weldability isn't good, easy to produce cracks, should be preheated to 100 ~ 150 ℃ before welding, generally used in the quenched and tempered state, also can undertake carbonitriding and high-frequency surface hardening treatment. Application, for example: after used in the manufacture of modified treatment weeken the speed, the load of the parts, such as gear, shaft, worm, spline shaft, thimble set, such as high frequency surface after quenching tempering and used in the manufacture of high surface hardness, wear resistance parts, such as gear, shaft, shaft, crankshaft, spindle, sleeve, pin, connecting rod, screw nut, inlet valve, etc., after quenching and tempering temperature in the parts used in the manufacture of heavy, medium speed impact, such as oil pump rotor, slider, gear, shaft, sets of ring, etc., used in the manufacture of reloading after quenching and low temperature tempering, low impact, wear-resistant parts, such as worm, such as main shaft, shaft, thimble, carbonitriding place namely after manufacture large size, high low-temperature impact toughness of the transmission parts, such as axle, gear, etc.
4, HT150 - gray cast iron
Application, for example: gear housing, machine bed, cabinet, hydraulic cylinder, pump body, valve body, flywheel, cylinder head, pulley, bearing cover etc.
5, 35, a variety of standard parts, fasteners, commonly used materials
Main features: appropriate strength, plasticity is good, high cold plastic, weldability is fair. Under the cold can be local upsetting and drawing. Low hardenability, normalizing and tempering after using application example: suitable for small section parts, can bear larger load parts: such as leveraged, connecting rod, crankshaft, shackle, etc., all kinds of standard parts, fasteners.
6, 65 mn - common spring steel
Application, for example: a variety of small size flat, round spring, seat cushion, spring, spring wind, also can make the spring ring, reed valve spring, clutch, brake spring, cold roll coil spring, spring, etc.
7, 0 cr18ni9 - the most commonly used stainless steel (steel grade 304 in the United States, Japan steel grade SUS304)
Characteristic and application: the most widely used as heat resistant stainless steel, such as the equipment used for food, general chemical equipment, the original to industrial equipment.
8, Cr12 - common cold work die steel (steel grade D3 in the United States, Japan steel grade SKD1)
Characteristic and application: Cr12 steel is a kind of widely used cold work die steel, belong to high carbon high chromium type of ledeburite steel. The steel has good hardenability and good wear resistance; Because Cr12 steel carbon content as high as 2.3%, the impact toughness is poorer, brittle crack, and easy to form uneven eutectic carbides; Cr12 steel has good wear resistance, much less used in the manufacture of impact load requirements of high wear resistance of the cold punching die, blanking die, cold heading die, punch, punch and die of cold extrusion mould, drill sets, gauge, wire drawing die, stamping die, thread rolling plate, deep drawing mould and powder metallurgy with cold pressing mould, etc.
9, DC53, common cold work die steel imported from Japan
Characteristic and application: high strength cold work die steel toughness, Japanese datong steel steel grade (strains) manufacturer. After high temperature tempering has high hardness, high toughness, excellent linear cutting. Used in precision cold stamping die, drawing die, thread rolling die, cold blanking die, punch 10, SM45 - plain carbon plastic die steel, Japan steel grade S45C)
10, DCCr12MoV - resistant chromium steel
Domestic. The Cr12 carbon steel is low, and joined the Mo and V, uneven carbide improves, Mo can reduce carbide segregation and improve the hardenability, V can refine the grain size increase toughness. This steel has high hardenability, cross section can be completely hardening under 400 mm, and in 300 ~ 400 ℃ can still maintain good hardness and wear resistance, the Cr12 has high toughness, volume change when quenching is small, and high wear resistance and good comprehensive mechanical properties. So can make cross section is large, complex shape, undergo large impact of all kinds of mold, such as normal stretching die, punching die, punching die, blanking die, blanking die, piping die, drawing die, cold extrusion die, cold cut scissors, circular saw, standard tools, measuring tool, etc.
11, SKD11 - toughness chrome steel
Japan's Hitachi plant type production. On the technical improvement of steel casting organization, refine the grain size. The Cr12mov toughness and wear resistance increased. Prolong the service life of the mold.
12, D2 - high carbon high chromium cold as steel
American-made. High hardenability, quenching hardness, wear resistance, high temperature oxidation resistance performance is good, after quenching and polishing good corrosion resistance, heat treatment deformation is small, appropriate manufacturing various high-precision, long-life cold work mould, cutting tools and measuring tools, such as drawing die, cold extrusion die, cold shear knife, etc.
13, SKD11 (SLD) - deformation toughness high chromium steel
Japan's Hitachi plant type production. Because in steel MO, V content increased, the improvement of steel casting organization, refine the grain, improve the carbide morphology, and the tenacity of steel (bending strength, deflection, impact toughness, etc.) than SKD1, D2, high wear resistance is increased, and has higher resistance to drawability. Practice shows that the steel die life than Cr12mov improved. Often require high manufacturing mold, such as the tensile modulus, impact of the grinding wheel piece mould, etc.
14, DC53, high toughness high chromium steel
Japan's big homologous strain type production. The heat treatment hardness is higher than SKD11. High temperature (520-530) of 62-63 HRC after tempering high hardness, DC53 in terms of strength and abrasion resistance than SKD11, toughness is twice the SKD11. DC53 toughness rarely appear cracks and crack in cold work mould manufacturing. Greatly improving the service life. The residual stress is small. The high temperature back to reduce the residual stress. Because of the cracks and deformation after wire-cutting processing, be suppressed, cutting and grinding than SKD11. Used in precision stamping die, cold forging, deep drawing mould, etc.
15, SKH - 9 - wear resistance, toughness big common high speed steel
Japan's Hitachi plant type production. Used for cold forging die, cutting machine, drill, reamer, punch, etc.
16, ASP-23 - powder metallurgy HSS, ASP
Sweden. Carbide distribution is extremely uniform, wear resistance, high toughness, easy processing, heat treatment size stability. Used in punch, deep drawing mould, jig, cutter and shear blades and other kinds of long service life of cutting tools.
17, P20 - the size of the general requirements of plastic mold
American-made. Can operate electric erosion. The factory state pre hardened HB270-300. The quenching hardness HRC52.
18, 718 - the high demand of the size of the plastic mold
Sweden. Especially electric erosion operation. The factory state pre hardened HB290-330. The quenching hardness HRC52
19, Nak80 - high mirror, high-precision plastic mold
State of Japan's big homologous strain type production. The factory pre hardened HB370-400. The quenching hardness HRC52
20, S136, anti-corrosion and mirror polishing plastic moulds
State of Sweden. The factory pre hard HB < 215. Quenching hardness HRC52.
21, H13, ordinary common die mold
Used in aluminum, zinc, magnesium and alloy die-casting. Hot stamping mold, aluminum extrusion die.
22, SKD61 - advanced die-casting mould
Japan's Hitachi plant type, the electric ballast heavy technology, improvement on service life than H13 has obvious. Hot stamping mold, aluminum extrusion die.
23, 8407 -- advanced die-casting mould
Sweden. Hot stamping mold, aluminum extrusion die.
24, FDAC, add sulfur to strengthen its easy cutting
Factory hard 338-42 HRC hardness, can be directly using the carving process, do not need to quenching, tempering process. Used in small batch, simple and easy mold, all kinds of resin products, sliding parts, short delivery mould parts. Zipper mold, glass frame mode.
Main features: the most commonly used in carbon quenched and tempered steel, good comprehensive mechanical properties, low hardenability, water quenching crack easily. Small pieces of appropriate USES conditioning treatment, large pieces of appropriate USES normalizing treatment. Application, for example: mainly used in the manufacture of high strength of moving parts, such as turbine impeller, the compressor piston. Shaft, worm gear, rack, etc. Weldments note preheating before welding, eliminating stress annealing after welding.
2, Q235A (A3 steel) - the most commonly used carbon structural steel
Main features: high plasticity, toughness and weldability, cold stamping performance, as well as a certain strength, good cold bending performance. Application, for example: widely used in the general requirements of parts and welding structure. Such as stress not pull rod, connecting rod, pin, shaft, screw, nut, ring, stand, stand, building structures, Bridges, etc.
3, 40 cr - one of the most widely used steel, alloy structural steel
Main features: after tempering treatment, has the good comprehensive mechanical properties, low temperature impact toughness, and low notch sensitivity, good hardenability, oil cooling can get higher fatigue strength, water-cooled complex shape parts easy to generate crack, plastic medium, cold bending tempered or quenched and tempered after cutting workability is good, but the weldability isn't good, easy to produce cracks, should be preheated to 100 ~ 150 ℃ before welding, generally used in the quenched and tempered state, also can undertake carbonitriding and high-frequency surface hardening treatment. Application, for example: after used in the manufacture of modified treatment weeken the speed, the load of the parts, such as gear, shaft, worm, spline shaft, thimble set, such as high frequency surface after quenching tempering and used in the manufacture of high surface hardness, wear resistance parts, such as gear, shaft, shaft, crankshaft, spindle, sleeve, pin, connecting rod, screw nut, inlet valve, etc., after quenching and tempering temperature in the parts used in the manufacture of heavy, medium speed impact, such as oil pump rotor, slider, gear, shaft, sets of ring, etc., used in the manufacture of reloading after quenching and low temperature tempering, low impact, wear-resistant parts, such as worm, such as main shaft, shaft, thimble, carbonitriding place namely after manufacture large size, high low-temperature impact toughness of the transmission parts, such as axle, gear, etc.
4, HT150 - gray cast iron
Application, for example: gear housing, machine bed, cabinet, hydraulic cylinder, pump body, valve body, flywheel, cylinder head, pulley, bearing cover etc.
5, 35, a variety of standard parts, fasteners, commonly used materials
Main features: appropriate strength, plasticity is good, high cold plastic, weldability is fair. Under the cold can be local upsetting and drawing. Low hardenability, normalizing and tempering after using application example: suitable for small section parts, can bear larger load parts: such as leveraged, connecting rod, crankshaft, shackle, etc., all kinds of standard parts, fasteners.
6, 65 mn - common spring steel
Application, for example: a variety of small size flat, round spring, seat cushion, spring, spring wind, also can make the spring ring, reed valve spring, clutch, brake spring, cold roll coil spring, spring, etc.
7, 0 cr18ni9 - the most commonly used stainless steel (steel grade 304 in the United States, Japan steel grade SUS304)
Characteristic and application: the most widely used as heat resistant stainless steel, such as the equipment used for food, general chemical equipment, the original to industrial equipment.
8, Cr12 - common cold work die steel (steel grade D3 in the United States, Japan steel grade SKD1)
Characteristic and application: Cr12 steel is a kind of widely used cold work die steel, belong to high carbon high chromium type of ledeburite steel. The steel has good hardenability and good wear resistance; Because Cr12 steel carbon content as high as 2.3%, the impact toughness is poorer, brittle crack, and easy to form uneven eutectic carbides; Cr12 steel has good wear resistance, much less used in the manufacture of impact load requirements of high wear resistance of the cold punching die, blanking die, cold heading die, punch, punch and die of cold extrusion mould, drill sets, gauge, wire drawing die, stamping die, thread rolling plate, deep drawing mould and powder metallurgy with cold pressing mould, etc.
9, DC53, common cold work die steel imported from Japan
Characteristic and application: high strength cold work die steel toughness, Japanese datong steel steel grade (strains) manufacturer. After high temperature tempering has high hardness, high toughness, excellent linear cutting. Used in precision cold stamping die, drawing die, thread rolling die, cold blanking die, punch 10, SM45 - plain carbon plastic die steel, Japan steel grade S45C)
10, DCCr12MoV - resistant chromium steel
Domestic. The Cr12 carbon steel is low, and joined the Mo and V, uneven carbide improves, Mo can reduce carbide segregation and improve the hardenability, V can refine the grain size increase toughness. This steel has high hardenability, cross section can be completely hardening under 400 mm, and in 300 ~ 400 ℃ can still maintain good hardness and wear resistance, the Cr12 has high toughness, volume change when quenching is small, and high wear resistance and good comprehensive mechanical properties. So can make cross section is large, complex shape, undergo large impact of all kinds of mold, such as normal stretching die, punching die, punching die, blanking die, blanking die, piping die, drawing die, cold extrusion die, cold cut scissors, circular saw, standard tools, measuring tool, etc.
11, SKD11 - toughness chrome steel
Japan's Hitachi plant type production. On the technical improvement of steel casting organization, refine the grain size. The Cr12mov toughness and wear resistance increased. Prolong the service life of the mold.
12, D2 - high carbon high chromium cold as steel
American-made. High hardenability, quenching hardness, wear resistance, high temperature oxidation resistance performance is good, after quenching and polishing good corrosion resistance, heat treatment deformation is small, appropriate manufacturing various high-precision, long-life cold work mould, cutting tools and measuring tools, such as drawing die, cold extrusion die, cold shear knife, etc.
13, SKD11 (SLD) - deformation toughness high chromium steel
Japan's Hitachi plant type production. Because in steel MO, V content increased, the improvement of steel casting organization, refine the grain, improve the carbide morphology, and the tenacity of steel (bending strength, deflection, impact toughness, etc.) than SKD1, D2, high wear resistance is increased, and has higher resistance to drawability. Practice shows that the steel die life than Cr12mov improved. Often require high manufacturing mold, such as the tensile modulus, impact of the grinding wheel piece mould, etc.
14, DC53, high toughness high chromium steel
Japan's big homologous strain type production. The heat treatment hardness is higher than SKD11. High temperature (520-530) of 62-63 HRC after tempering high hardness, DC53 in terms of strength and abrasion resistance than SKD11, toughness is twice the SKD11. DC53 toughness rarely appear cracks and crack in cold work mould manufacturing. Greatly improving the service life. The residual stress is small. The high temperature back to reduce the residual stress. Because of the cracks and deformation after wire-cutting processing, be suppressed, cutting and grinding than SKD11. Used in precision stamping die, cold forging, deep drawing mould, etc.
15, SKH - 9 - wear resistance, toughness big common high speed steel
Japan's Hitachi plant type production. Used for cold forging die, cutting machine, drill, reamer, punch, etc.
16, ASP-23 - powder metallurgy HSS, ASP
Sweden. Carbide distribution is extremely uniform, wear resistance, high toughness, easy processing, heat treatment size stability. Used in punch, deep drawing mould, jig, cutter and shear blades and other kinds of long service life of cutting tools.
17, P20 - the size of the general requirements of plastic mold
American-made. Can operate electric erosion. The factory state pre hardened HB270-300. The quenching hardness HRC52.
18, 718 - the high demand of the size of the plastic mold
Sweden. Especially electric erosion operation. The factory state pre hardened HB290-330. The quenching hardness HRC52
19, Nak80 - high mirror, high-precision plastic mold
State of Japan's big homologous strain type production. The factory pre hardened HB370-400. The quenching hardness HRC52
20, S136, anti-corrosion and mirror polishing plastic moulds
State of Sweden. The factory pre hard HB < 215. Quenching hardness HRC52.
21, H13, ordinary common die mold
Used in aluminum, zinc, magnesium and alloy die-casting. Hot stamping mold, aluminum extrusion die.
22, SKD61 - advanced die-casting mould
Japan's Hitachi plant type, the electric ballast heavy technology, improvement on service life than H13 has obvious. Hot stamping mold, aluminum extrusion die.
23, 8407 -- advanced die-casting mould
Sweden. Hot stamping mold, aluminum extrusion die.
24, FDAC, add sulfur to strengthen its easy cutting
Factory hard 338-42 HRC hardness, can be directly using the carving process, do not need to quenching, tempering process. Used in small batch, simple and easy mold, all kinds of resin products, sliding parts, short delivery mould parts. Zipper mold, glass frame mode.
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