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.
A medium carbon, medium tensile steel supplied as forged or normalized
Purpose
S45C is widely used in mechanical parts and structural steel.
International Comparison of Materials
| EU EN | INTER ISO | USA AISI | JAPAN JIS | GERMANY DIN | CHINA GB | FRANCE AFNOR | ITALY UNI |
|---|---|---|---|---|---|---|---|
| C45E C45 |
C45 | 1045 | S45C | CK45 C45 Cf45 |
45 | XC45 XC48H1 AF65C45 C45 |
C45 1C45 C45 |
| SPAIN UNE | Sweden SS | Finland SFS | Poland PN | Czechia CSN | Austria ONORM | Russia GOST | England BS |
|---|---|---|---|---|---|---|---|
| C45K | 1672 1650 |
C45 | 45 | 12050 | C45SW | 45 |
080M46 |
**This comparison table is for reference only. The standards and grades of various countries have slightly different chemical compositions. Please refer to the database for details.**
Chemical Composition(JIS G4051)
| C(%) | Si(%) | Mn(%) | P(%) | S(%) | Cr(%) | Ni(%) | Cu(%) |
|---|---|---|---|---|---|---|---|
| 0.42-0.48 | 0.15-0.35 | 0.6-0.9 | 0≦0.03 | 0≦0.035 | 0≦0.2 | 0≦0.2 | 0≦0.3 |
Conditions of heat treatment
- Annealing: 880℃ Furnace Cooling
- Normalization: 880~870℃ Air Cooling
- Hardening: 820~870℃ Water Cooling
- Tempering: 550~650℃ Rapid Cooling
Mechanical properties
(1) Material
Tensile strength (kgf/mm²): ≧58
Yield strength (kgf/mm²): ≧35
Elongation (%): ≧20
Cross section reduction rate (%): ≧45
Hardness (Hb): 167~229
(2) After heat treatment
Tensile strength (kgf/mm²): ≧70
Yield strength (kgf/mm²): ≧50
Elongation (%): ≧17
Cross section reduction rate (%): ≧45
Hardness (Hb): 201~269
Size Range
| Shape | Size(mm) | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Round Bar |
13 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 |
| 26 | 27 | 28 | 30 | 32 | 34 | 36 | 38 | 40 | 42 | 44 | 45 | |
| 46 | 48 | 50 | 53 | 55 | 57 | 60 | 62 | 65 | 67 | 70 | 72 | |
| 75 | 78 | 80 | 82 | 85 | 90 | 92 | 95 | 100 | 103 | 105 | 110 | |
| 115 | 120 | 125 | 130 | 135 | 140 | 145 | 150 | 155 | 160 | 165 | 170 | |
| 175 | 180 | 185 | 190 | 200 | 210 | 220 | 230 | 240 | 250 | 260 | 270 | |
| 280 | 290 | 295 | 305 | 315 | 325 | 335 | 345 | 355 | 365 | 375 | 385 | |
| 395 | 405 | 415 | 425 | 435 | 445 | 455 | 465 | 475 | 485 | 495 | 505 | |
| 515 | 525 | 535 | 545 | 555 | 565 | 575 | 585 | 595 | 605 | |||
- Steel Application
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Gear
There are many types of gears, such as: spur gears, sprocket gears, timing pulleys, helical gears, internal gears, racks, spur bevel gears, curved bevel gears, zero-degree bevel gears, staggered spiral gears, worm gears, Halberd gear. The material of the gear must have strong bending fatigue strength and contact fatigue strength, and the tooth surface must have sufficient hardness and wear resistance, and the core must have a certain strength and toughness. The materials for gear application that we recommend are as below.
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Machine Tool Spindle
There may be several spindles in a machine. There are many types of spindles, including grinding spindles, electric spindles, low-speed spindles, high-speed spindles, engraving machine spindles, milling machine spindles, lathe spindles, etc. Therefore, the spindle should be made of materials with the highest stability, rigidity and efficiency. The materials for machine tool spindle application that we recommend are as below.
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Drive Shafts
In order to allow changes in the alignment and distance between the driving and driven components, the drive shaft contains one or more universal joints and couplings. Therefore, their materials must withstand strong pressure, while avoiding excessive additional weight to increase reverse inertia. The materials of drive shaft we recommend are as below. The materials for drive shaft application that we recommend are as below.
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Cutting Tools
There are many types of cutting tools, such as: milling cutters, drills, circular saw blades, reamers, PCD (Polycrystalline Diamond) cutting tools, hole drills, lathe tools, stamping tools, etc. The quality of the cutting tool material will affect the surface quality, cutting efficiency, tool life and other factors. Therefore, the selected tool material should have a high degree of hardness, wear resistance, strength, toughness and heat resistance. The materials for cutting tools application that we recommend are as below.
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Machine 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.
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