C-45
C-45 Grade Introduction:
The range of products of C45 Round Bar which we offer to our customers are of high quality and these round bars are used for making machineries and OEM Auto components. These products have been made keeping in mind the quality parameters which have been set by the industry in the market. C45 Steel Round Bars are always supplied with the test certificates and can be supplied in bulk quantity as well as retail quantity as per customers requirements. C45 round bars are supplied by us to various engineering and forging industries.
C-45 Grade Application:
- Axles
- Bolts
- Forged connecting rods
- Crankshafts
- Torsion bars
- Light gears
- Guide rods
- Screws
- Forgings
- Woodworking drills
- Hammers
C-45 Equivalent Grades:
| Country |
Standard |
Grades |
| USA |
ASTM A29 |
1045 |
| British |
EN 10083-2 |
C45/1.1191 |
| Japan |
JIS G4051 |
S45C |
| Australia |
AS 1442 |
1045 |
C-45 Chemical Composition:
| Element |
C |
Mn |
P |
S |
Fe |
| Content (%) |
0.420 – 0.50 |
0.60 – 0.90 |
≤ 0.040 |
≤ 0.050 |
98.51 – 98.98 |
Mechanical Properties:
| Property |
Value |
| Tensile Strength (σb) |
≥600 MPa (61 ksi) |
| Yield Strength (σs) |
≥355 MPa (36 ksi) |
| Elongation (δ5) |
≥23 % |
| Reduction of Area (ψ) |
≥55 % |
| Impact Energy (Akv) |
≥98 J |
| Impact Toughness (αkv) |
≥49 J/cm² (5 ft-lb/in²) |
| Hardness (No Heat Treatment) |
≤229 HB; annealed steel, ≤197HB |
| Sample Size |
25 mm |
Physical Properties:
| Property |
Value |
| Modulus of Elasticity |
205 x 10³ N/mm² |
| Density |
7.85 g/cm³ |
| Specific Heat Capacity |
0.48 J/g·K |
Thermal Properties:
| Property |
T (°C) |
Treatment |
| Thermal Conductivity (W/m-K) |
42.7 |
100 |
| Specific Heat (J/kg-K) |
477 |
50-100 |
Forging Properties:
Preheat the steel carefully, then raise the temperature to 1100°C for forging. Do not forge below 850°C. After forging cool slowly, preferably in a furnace.
Stress Relieving:
Heat to 550°C – 660°C (1022°F – 1220°F)
Hold until the temperature is uniform
Soak for 1 hour per 25mm of section
Cool in still air