Description
C-45 Grade Introduction:
C45 steel is a medium carbon steel grade offered in hot rolled or normalized conditions. Known for its good machinability, weldability, and high strength, it is commonly used for engineering and forging applications. The C45 round bars we supply are of high quality, manufactured to industry standards, and are ideal for creating machinery and OEM auto components. Available in both bulk and retail quantities, these round bars are supplied with test certificates to meet various industry requirements.
C-45 Grade Application:
C45 is widely used in applications requiring higher strength and wear resistance than low carbon steel. Typical applications include:
- Axles
- Bolts
- Crankshafts
- Shafts
- Torsion bars
- Forged components
- Gears, rods, screws, and tools like knives, sickles, hammers, etc.
C-45 Equivalent Grades:
| Country | USA | British | Japan | Australia |
|---|---|---|---|---|
| Standard | ASTM A29 | EN 10083-2 | JIS G4051 | AS 1442 |
| Grades | 1045 | C45/1.1191 | S45C | 1045 |
Additional Grades Available:
We supply other grades including EN1A, EN3B, EN8, EN24, EN31, 42CrMo4, and IS2062 to meet various industry needs.
C-45 Chemical Composition:
| Element | C | Mn | P (Max) | S (Max) | Fe |
|---|---|---|---|---|---|
| % | 0.42-0.50 | 0.60-0.90 | ≤ 0.040 | ≤ 0.050 | 98.51-98.98 |
C-45 Mechanical Properties:
| Property | Metric | Imperial |
|---|---|---|
| Tensile Strength | ≥600 MPa | ≥61,000 psi |
| Yield Strength | ≥355 MPa | ≥36,000 psi |
| Elongation | ≥23% | ≥23% |
| Reduction of Area | ≥55% | ≥55% |
| Impact Energy (Akv) | ≥98 J | ≥72 ft-lb |
| Hardness (Brinell, unheated) | ≤229 HB | ≤229 HB |
C-45 Hardness:
C45 typically achieves hardness levels of 55 HRC when flame or induction hardened.
C-45 Heat Treatment:
Heat treatment for C45 varies depending on the shape, size, and final properties required. Heating, quenching, and tempering processes should be adjusted accordingly.
C-45 Hardening:
Heat to 820-860°C, allow thorough heating, then quench in oil or water for hardening.
C-45 Tempering:
After quenching, temper C45 at 550-660°C for at least one hour per 25mm of thickness, then cool in air. This will achieve a balance between hardness and ductility.
C-45 Physical Properties:
| Property | Metric | Imperial |
|---|---|---|
| Modulus of Elasticity | 205 GPa | 29,732 ksi |
| Density | 7.85 g/cm³ | 0.284 lb/in³ |
| Specific Heat Capacity | 0.48 J/g.K | 0.115 BTU/lb°F |
C-45 Thermal Properties:
| Property | Metric (T = 100°C) | Imperial (T = 100°F) |
|---|---|---|
| Thermal Conductivity | 42.7 W/m-K | 296.1 BTU/hr-ft²-°F |
| Specific Heat | 477 J/kg-K | 0.114 BTU/lb°F |
C-45 Forging Properties:
Preheat to 1100°C and forge at temperatures down to 850°C. Allow slow cooling, preferably in a furnace, to avoid cracking or distortion.
C-45 Stress Relieving:
Heat to 550-660°C, allow temperature uniformity, then cool in air. This removes residual stresses caused by machining or other cold work.
C-45 Normalizing:
Normalize C45 by heating to 840-880°C, followed by air cooling. This process refines the grain structure and improves machinability.
C-45 Annealing:
For annealing, heat to 680-710°C and allow slow cooling in the furnace. This process softens the material for machining.
C-45 Density:
The density of C45 steel is typically 7.7-8.03 g/cm³.
C-45 Machinability:
C45 exhibits good machinability when heat treated or cooled from forging. It is suitable for most machining operations, including turning and milling.
C-45 Welding:
C45 can be welded using normal fusion methods, but special attention should be given before carburizing or hardening and tempering to avoid compromising its mechanical properties.
Supply Range:
Mumbai Ahmedabad, Amaravathi, Ambattur, Bangalore, Belgaum, Chennai, Chittoor, Coimbatore, Dindigul, Mysore, Nellore, Hyderabad, Kochi, Mangalore, Tirupur, Tuticorin, Madurai, Andhra Pradesh, Karnataka, Puducherry, Kerala, Tamil Nadu, Telangana, Visakhapatnam, Kochi, Kerala, Hubli-Dharwad, Karnataka
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