Sichuan Liaofu Special Steel Company is one of the most experienced manufacturers and suppliers of carbon steel c45 1045 s45c steel round bar in China. With over 20 years' experience, our factory offer high quality products made in China with competitive price. Welcome to contact us for wholesale service.
Product name:hot sale Carbon Steel C45 1045 S45C steel round bar
Normalized Condition:
In the normalized state, the tensile strength is 670–720 MPa, the yield strength is ≥ 340 MPa, the elongation is 15–18%, the reduction of area is 45–50%, the Charpy-V impact value is ≥ 50 J, and the hardness is 170–240 HB.
Quenched and Tempered Condition:
After quenching and tempering at a tempering temperature of 560–620 °C, the tensile strength is 700–850 MPa, the yield strength is 450–560 MPa, the elongation is 15–17%, the reduction of area is 45–50%, the Charpy-V impact value is 60–80 J, and the hardness is 196–241 HB.
Size Range:
Outside Diameter:
From 1mm to 400mm
Surface Finish: Products are generally supplied in the black hot-rolled condition. They can also be processed into other surface finishes such as rough-machined, turned, peeled, polished, or ground, according to customer requirements.
Certificate:ISO,SGS,TUV and Third part inspection.
Application:Construction field, ships building industry, car making industry, petroleum & chemical industries, war and electricity industries, food processing and medical industry, boiler heat exchange, machinery and hardware fields.
| Tolerance OD mm | H7 | H8 | H9 | H10 | H11 | F7 | F8 |
|---|---|---|---|---|---|---|---|
| 6-10 | 0-0.015 | 0-0.022 | 0-0.036 | 0-0.058 | 0-0.09 | -0.013-0.028 | -0.013-0.035 |
| 10-18 | 0-0.018 | 0-0.027 | 0-0.043 | 0-0.058 | 0-0.09 | -0.016-0.034 | -0.016-0.043 |
| 18-30 | 0-0.021 | 0-0.033 | 0-0.052 | 0-0.084 | 0-0.13 | -0.02-0.041 | -0.02-0.053 |
| 30-50 | 0-0.025 | 0-0.039 | 0-0.062 | 0-0.1 | 0-0.16 | -0.025-0.05 | -0.025-0.064 |
| 50-80 | 0-0.030 | 0-0.046 | 0-0.074 | 0-0.12 | 0-0.19 | -0.03-0.06 | -0.03-0.076 |
| 80-120 | 0-0.035 | 0-0.054 | 0-0.087 | 0-0.14 | 0-0.22 | -0.036-0.071 | -0.036-0.9 |
Good Machinability: It offers relatively good machinability, allowing for precise processing to achieve the required dimensions and surface quality. It is suitable for a variety of machining operations.
Moderate Strength and Toughness: It has medium strength that meets the requirements of most general mechanical parts, while also maintaining a certain degree of toughness to withstand impact and cyclic loading.
Cost-Effective: As a general-purpose carbon steel, it has a relatively low cost compared with alloy steels, making it suitable for large-scale production.
Products Description
Mechanical Manufacturing: Widely used in the production of various mechanical parts such as axles, bolts, forged connecting rods, crankshafts, torsion bars, light gears, guide rods, and screws.
Automotive Industry: Used in the manufacture of components such as engine shafts, gears, and fasteners in automobiles.
Agricultural Machinery: Applied in the production of parts such as shafts, gears, and structural supports for tractors, harvesters, and irrigation equipment.
Packaging & Shipping
FAQ
Q: What is the minimum order quantity for C45 round bars, and can I cut short pieces?
A: Our MOQ is 1 ton for custom production, but we have massive stock in our warehouse. You can order a single 6-meter bar or cut custom lengths starting from 500mm. We charge by the actual weight.
Q: Is 1045 steel easy to weld?
A: No, 1045 (S45C) has a medium-high carbon content and is prone to cold cracking after welding. If welding is unavoidable, you must preheat to 200-300°C, use low-hydrogen electrodes, and post-weld stress-relieve at 550-650°C.
Q: What is the typical hardness after quenching and tempering?
A: After quenching at 820-860°C and tempering at 560-620°C, you can expect a hardness of roughly 196-241 HB, with a tensile strength of 700-850 MPa. It offers a good balance of strength and toughness for shafts and axles.
Q: Do you offer peeled or polished C45 bars for automatic lathe machining?
A: Yes. We supply hot-rolled black bars, but we also provide peeled (K12) and ground (H9/H10) bars produced at our in-house machining line. These tight tolerances eliminate the need for rough turning and reduce your CNC cycle times.
Q: How long is the delivery time for stock items?
A: Since we are an integrated manufacturing group with our own warehouse, standard sizes in stock can be delivered within 3-7 days after payment. Custom sizes or heavy bulk orders take 15-25 days.
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