Sichuan Liaofu Special Steel Company is one of the most experienced manufacturers and suppliers of hot rolled 1045 carbon steel round bar for machinery 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.
Hot rolled 1045 carbon steel round bar is a widely used material in the machinery industry due to its balanced mechanical properties, cost-effectiveness, and versatility.
Chemical Composition of Hot Rolled 1045 Carbon Steel Round Bar for Machinery
| Element | Chemical Symbol | Typical Content (Mass Fraction, %) |
|---|---|---|
| Carbon | C | 0.42 - 0.48 |
| Manganese | Mn | 0.60 - 0.90 |
| Phosphorus | P | ≤ 0.040 |
| Sulfur | S | ≤ 0.040 |
| Silicon | Si | 0.15 - 0.35 |
| Iron | Fe | Matrix |
| Other Elements | - | Total ≤ 0.50 (e.g., Cr, Ni, Cu) |
What is the Tolerance ofour Round bar?
| 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 |
Hot Rolled 1045 Carbon Steel Round Bar: Applications in Machinery Equipment
| Application Category | Specific Applications | Key Reasons |
|---|---|---|
| Gear Manufacturing | Gears in gearboxes, transmissions, and drive systems for industrial presses, conveyors, agricultural equipment. | Offers high tensile strength (600–800 MPa) and hardness (up to 55 HRC after quenching and tempering), withstands heavy loads and wear. Good machinability enables precise gear cutting. |
| Shafts and Axles | Drive shafts, crankshafts, camshafts in engines; axles in construction and mining equipment. | Excellent toughness and fatigue resistance handle torsional forces and cyclic loading. Hot rolling enhances structural integrity, reducing fracture risk under dynamic stress. |
| Fasteners and Hardware | Bolts, nuts, studs for assembling industrial machinery frames, hydraulic systems, and heavy-duty components. | Heat-treatable to meet high-torque fastening strength requirements. Cost-effective for large-scale production. |
| Hydraulic and Pneumatic Components | Pistons, cylinder rods, valves in hydraulic pumps, cylinders, and pneumatic systems. | Combines strength with machinable surface finish for durability in fluid-powered systems. Resists wear from hydraulic fluids and mechanical abrasion. |
| Tooling and Fixtures | Jigs, fixtures, dies for machining operations; simple cutting tools (drills, taps) for low-volume/non-critical applications. | Locally hardenable (e.g., case hardening) to form wear-resistant surfaces while retaining a tough core, suitable for tooling needing strength and impact resistance. |
| Structural Components | Connecting rods, levers, supports in textile machines, printing presses, packaging equipment. | Moderate strength and better weldability (vs. higher-alloy steels) make it ideal for robust yet relatively lightweight structural parts. |
| Agricultural Machinery | Shafts, gears, structural supports in tractors, harvesters, irrigation equipment. | Withstands harsh agricultural conditions (moisture, dirt, variable loads). Durability reduces maintenance costs. |
Packaging & Shipping of our round bar :
MOQ: 1 Ton
Terms of delivery: FOB, CFR, CIF.
Terms of payment: L/C, T/T, Western Union,Cash.
Port of Loading: Shanghai,China
Quantity of stock: Normally have large quantity stocks.
Time of delivery: 3-7 days for samples;10-25 days for batch goods.Normally delivery in 20 days from production
Package Informations: Seaworthy Packing or as required
Packaging & Shipping
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