AISI 1045 steel / JIS S45C / DIN CK45 Carbon steels also called carbon element. They are a category of steels with 0.12 to 2% carbon composition.
AISI 1045 steel is a kind of medium carbon steel design need more intensity and hardness can function. The steel has excellent dimensional accuracy, concentricity and straightness, common to reduce wear in high speed applications. it can form turned, ground and polished, can be processing asymmetric finite deformation.
AISI 1045 steel C45 carbon steel performance specification as below:
Chemical Composition of 1045 steel
| ASTM A29/29M | C | Si | Mn | P | S |
| 1045 | 0.43～0.50 | / | 0.60～0.90 | ≤0.040 | ≤0.050 |
Physical Properties of 1045 steel material
| Density | 7.85 g/cm3 |
1045 Mechanical Properties
Follow test Base on cold rolled
| Properties | Metric | Properties | Metric |
| Tensile strength | 585 MPa | Elongation at break (in 50 mm) | 12% |
| Yield strength | 450 MPa | Hardness, Brinell | 163 |
| Modulus of elasticity | 200 GPa | Hardness, Knoop (converted from Brinell hardness) | 184 |
| Shear modulus (typical for steel) | 80 GPa | Hardness, Rockwell B (converted from Brinell hardness) | 84 |
| Poisson’s ratio | 0.29 | Hardness, Vickers (converted from Brinell hardness) | 170 |
Thermal Properties of 1045 cold drawn
| Properties | Metric |
| Thermal conductivity | 51.9 W/mK |
| Thermal expansion co-efficient (@0.000-100°C/32-212°F) | 11.2 µm/m°C |
1045 steel equivalent as below:
| ASTM A29/29M | C | Si | Mn | P | S |
| 1045 | 0.43～0.50 | / | 0.60～0.90 | ≤0.040 | ≤0.050 |
| DIN W-Nr | C | Si | Mn | P | S |
| 1.1191/CK45 | 0.42～0.50 | ≤0.40 | 0.50～0.80 | ≤0.035 | ≤0.035 |
| GB/T | C | Si | Mn | P | S |
| 45 | 0.42～0.50 | 0.17～0.37 | 0.50～0.80 | ≤0.035 | ≤0.035 |
| BS | C | Si | Mn | P | S |
| 080M46 | 0.42～0.50 | ≤0.40 | 0.50～0.80 | ≤0.035 | ≤0.035 |
| JIS | C | Si | Mn | P | S |
| S45C | 0.42～0.48 | 0.15～0.35 | 0.60～0.90 | ≤0.030 | ≤0.030 |
Forging 1045 carbon steel
Heat to 1050°C for forging, keep to no below 850°C.
1045 steel heat treatment:
Annealing of 1045 steel
Slowly heat to 680-750 °C, Cool in the furnace.
1045 steel Hardening
Heat to 820-860°C, quenching in oil or water.
1045 steel Tempering
After quenching, Re-heat to 550-660°C for Tempering, keep about 2 hours.
Welding of medium carbon steel AISI 1045 steel
Normal preferably in the range of 250-538°C. Recommend you contact your welding consumables supplier get more details welding data
Heat Treatment of steel AISI 1045 steel
According different products needs, make different heat treatment.
Assured Quality Supply
Our all steel supplied in accordance with our ISO 9001 : 2008 and UT test SPE 1921-84 C/c or D/D.
Contact us
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