Machine Parts
Mechanical part is the basic unit of machine, such as bolt, screw, key, belt, gear, shaft, spring, pin, etc.
Ju Feng supplies diverse steel materials and CNC machining for mechanical parts.
The material types of mechanical parts include metallic materials, non-metallic materials and composite materials. Metal materials are divided into ferrous metal materials and non-ferrous metal materials. Ferrous metal materials include steel, cast steels and cast irons, which have good mechanical properties (such as strength, ductility, toughness, etc.), and are relatively cheap and easy to obtain. Non-ferrous metal materials have the advantages of low density, good thermal and electrical conductivity.
The materials for machining parts application that we recommend are as below.
- Related List
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SNCM439 Alloy Steel
Equivalent Grades: GB 40CrNiMoA, 45CrNiMoVA, JIS SNCM439, and ASTM 4340, 9840. SNCM439 is a kind of refining steel and has the properties of high hardness and toughness. It is often used for the manufacture of screws, gears, shafts, nuts, pistons, the automobile parts required high toughness and so on.
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SNCM420 Alloy Steel
Equivalent Grades: JIS SNCM420 and ASTM 4320. SNCM420 is mainly used for railway bearings, drive shafts, gears, screws, cutting tools and other products which need impact resistance and wear resistance. SNCM420 is a kind of alloy carburizing steel as SNCM220. The mechanical properties between SNCM420 and SNCM220 are almost the same. The surface of SNCM420 is high hardness and has good performance in abrasion resistance and contact fatigue strength. Its core which has high toughness can withstand high impaction. There are two differences between SNCM420 and SNCM220 which are the standard and the amount of Ni content. The Ni content of SNCM420 is more than the one of SNCM220.
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SNCM220 Alloy Steel
Equivalent Grades: GB 20CrNiMo, JIS SNCM220, ASTM 8615, 8617, 8620, 8622, DIN 20NiCrMo2-2. SNCM220 is mainly used for automobile bearings, drive shafts, gears, screws, cutting tools and other products which need impact resistance and wear resistant. SNCM220 is a common type of alloy carburizing steel or bearing steel with the surface of high hardness, abrasion resistance and contact fatigue strength. Its core which has high toughness can withstand high impaction.
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SCM440 Alloy Steel
SCM440 is medium carbon chromium molybdenum alloy steel, which is an alloy steel containing chromium and molybdenum. It has the advantages of stable composition, low harmful elements, high steel purity, small decarburization layer and few surface defects. It is easy to be spheroidized and has low cold cracking rate. It is usually hardened and tempered. The ultimate tensile strength is 850-1000 MPa. This material achieves a very good balance between strength, toughness and wear resistance. The chromium content of the alloy provides good hardness permeability, and the molybdenum element imparts average hardness and high strength. SCM440 reacts well in heat treatment and it is easy to process under heat treatment conditions. This material provides many desirable properties such as good strength and wear resistance, excellent toughness, good ductility and resistance to high-temperature stresses.
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SCM420 Alloy Steel
Equivalent Grades: GB 20CrMo, JIS SCM420, ASTM 4118, DIN 25CrMo4. SCM420 are alloy steel with high hardenability, temper brittleness, well weldability, less cold cracking tendency, good machinability, and great cold plastic strain. SCM420 generally are used for the parts which need high wear resistance, such as gears, shafts, high-pressure pipes, all kinds of fasteners, and so on.
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SCM415 Alloy Steel
Equivalent Grades: GB 15CrMo, JIS SCM415, DIN 15CrMo5. SCM415 whose surface are processed through carburizing hardening treatment are used for the parts which need high toughness or wear resistance, such as cylinder piston, crankshaft, gears, pin, shafts and so on.
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S45CBD Bright Medium Carbon Steel
The surface is smooth after cold drawing, and the main difference with S45C is that the surface can reach rough turning of grade. The post-process can be directly used for milling or grinding, which greatly reduces the processing time. Its characteristics and application are the same as S45C. Applications requiring strength and impact resistance of the component, because of its high carbon content, therefore, have a higher tensile strength, ductility and wear resistance, but is not suitable for welding or forming. This steel grade can be supplied in many standard shapes, including round, square, hexagonal, and plate. It generally applicative used in nuts and bolts, axles, rollers, springs, wires, wheel frames, rods, engine parts, stamping dies, hammers, lock washers/lock pin gaskets, turbine rotors, railway tracks, cylinder sleeves, hand tools, screws, railway wheels, gears, garden shears, etc.
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S45C Medium Carbon Steel
Applications requiring strength and impact resistance of the component, because of its high carbon content, therefore, have a higher tensile strength, ductility and wear resistance, but is not suitable for welding or forming. This steel grade can be supplied in many standard shapes, including round, square, hexagonal, and plate. It generally applicative used in nuts and bolts, axles, rollers, springs, wires, wheel frames, rods, engine parts, stamping dies, hammers, lock washers/lock pin gaskets, turbine rotors, railway tracks, cylinder sleeves, hand tools, screws, railway wheels, gears, garden shears, etc.
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A106 Seamless Carbon Steel Pipe
Equivalent Grades: ASTM A106, ASME SA106 pipe. A106 is a kind of carbon steel pipe of USA standard. It can transport various fluids and gases under the high pressure and high temperature, and is often used for steam, petrochemical products, natural gas and other industrial piping systems. A106 can be widely used in petroleum, chemical, boilers, power plant, ships, machinery manufacturing, automotive, aviation, aerospace, energy, construction and military industries.
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1144 Free Cutting Steel
Equivalent Grades: CNS SUM43, JIS SUM43, ASTM 1144, ISO 44SMn28, DIN 45S20. 1144 free cutting steels are utilized primarily to manufacture parts requiring high dimensional precision, superior surface finish, and higher strength than low-carbon free cutting steels, such as gears, shafts, bolts, valves, bushings, pins, fittings, spring seats, machine screws, automotive parts, and precision instruments.
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1215 Free Cutting Steel
Equivalent Grades: CNS SUM23, JIS SUM23, ASTM 1215, DIN 9SMn36. 1215 free cutting steels are utilized primarily to manufacture parts requiring high dimensional precision and smooth surface finish with lower mechanical strength requirements, such as gears, shafts, bolts, valves, bushings, pins, fittings, spring seats, machine screws, surgical and dental instruments, automotive parts, and precision components.
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12L14 Free Cutting Steel
Equivalent Grades: CNS SUM24L, JIS SUM24L, ASTM 12L14, DIN 9SMnPb36, ISO 11SMnPb28. 12L14 free cutting steel adds 0.10%~0.35% lead (Pb) to low-carbon sulfur-phosphorus steel, reducing cutting friction and enabling ultra-high-speed CNC machining with extended tool life. 12L14 free cutting steel is utilized primarily to manufacture precision parts requiring high dimensional accuracy and mirror-smooth surface finish, such as gears, shafts, bolts, valves, bushings, pins, hose fittings, spring seats, machine screws, automotive parts, and precision instruments.
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