S45C Hot Rolled Round Bars And Forged Round Bars
S45C (also known as JIS S45C and AISI 1045) is a medium carbon steel with good strength, toughness, and wear resistance. It is widely used in the manufacturing of machinery parts, forging, and other applications where high strength and hardness are required.
Hot Rolled Round Bars:
S45C hot rolled round bars are produced by heating a billet of steel to high temperatures and passing it through rollers to create a round shape. The resulting bars have a rough surface and a scale layer that can be removed through further processing. The hot rolled process enhances the mechanical properties of S45C steel, making it suitable for applications that require high strength and toughness.
Forged Round Bars:
S45C forged round bars are produced by heating a billet of steel to high temperatures and applying pressure to shape it into a specific form, such as a round bar. The forging process produces a bar with a dense, uniform structure that is free of defects and has excellent mechanical properties. Forged S45C round bars are typically used in applications that require high strength, toughness, and resistance to wear and fatigue.
Both hot rolled and forged S45C round bars are available in a variety of sizes and lengths, making them suitable for a wide range of applications. They can be further processed through cutting, machining, and other operations to meet specific requirements.
S45C hot rolled round rod and forged round rod are its two common forms, and its specifications are as follows:
S45C hot rolled round rod Specifications:
Diameter range: 5.5mm~250mm
Length range: generally 3~6m, can also be customized according to customer requirements
Surface status: black surface, bright surface, Pickering bar surface and capillary surface
Application: Suitable for the manufacture of various mechanical parts with high requirements, such as shafts, connecting rods, pins, gears, etc.
S45C forged round rod Specifications:
Diameter range: 50mm~1300mm
Length range: generally 3~6m, can also be customized according to customer requirements
Surface state: clean, no scratches, no cracks, iron and other defects
Application: Suitable for manufacturing shaft mechanical parts with large diameter, long length and high strength, such as wind power shaft.
Standard Compare
| JUTHA WAN | JIS | AISI/SAE | DIN |
|---|---|---|---|
| S45C | S45C | 1045 | 1.119 (CK45) |
1045 Chemical composition
| standard | grade | C | Si | Mn | P | S | Cr |
| ASTM A29 | 1045 | 0.43-0.50 | —— | 0.60-0.90 | ≤0.04 | ≤0.05 | —— |
| EN 10083-2 | C45 | 0.42-0.50 | ≤0.04 | 0.50-0.90 | ≤0.03 | ≤0.035 | ≤0.4 |
| 1.1191 | |||||||
| JIS G4051 | S45C | 0.42-0.48 | 0.15-0.35 | 0.60-0.90 | ≤0.03 | ≤0.035 | —— |
1045 Physical properties
| density，g/cm3 | 7.87 |
| melting point°C | 1495 |
| elasticity modulus，psi | 29 x 10^6 |
| coefficient of thermal expansion，68-212˚F，/˚F | 6.39 x 10^-6 |
| heat conductivity，Btu/ft hr ˚F | 30 |
| specific heat，Btu/lb ˚F | 0.116 |
| Resistivity, microohms | 6.42 |
1045 Mechanical properties
| sectional dimension mm | ≤ 16 | 17 – 40 | 41 – 100 |
| strength of extension Mpa | 700-850 | 6500-800 | 630-780 |
| yield strength Mpa | ≥ 500 | ≥430 | ≥ 370 |
| 50mm elongation % | ≥ 14 | ≥ 16 | ≥ 17 |
| Impact charpy J | ≥ 30 | ≥ 30 | ≥ 30 |
| hardness HB | 210-245 | 195-235 | 185-230 |
Note: 820 water quenched ØC -850 øC or oil quenched at 830 °C-860°C and tempered between 540 °C- 680 °C
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