42CrMo / SAE4140 / SCM440 / 1.7225 Alloy Carbon Steel Round Bar
Baobin's alloy steel round bars are high-quality, precision-engineered products designed for demanding industrial applications. Our 42CrMo (equivalent to SAE4140, SCM440, and 1.7225) alloy steel round bars offer excellent strength, toughness, and wear resistance, making them ideal for components that require high fatigue strength and good hardenability.
Common Applications
These alloy steel round bars are widely used in:
- Automotive components (shafts, gears, axles)
- Mechanical engineering parts (connecting rods, bolts, studs)
- Oil and gas industry equipment
- Aerospace components
- Construction machinery parts
- Heavy-duty industrial applications
Technical Specifications
| Property |
Value |
| Material Grade |
42CrMo / SAE4140 / SCM440 / 1.7225 |
| Tensile Strength |
900-1100 MPa (depending on heat treatment) |
| Yield Strength |
700-900 MPa |
| Elongation |
12-18% |
| Hardness (Annealed) |
170-220 HB |
| Hardness (Quenched & Tempered) |
28-34 HRC |
| Density |
7.85 g/cm鲁 |
| Melting Point |
1420-1510掳C |
Customization Options
Baobin offers flexible customization options to meet your specific requirements:
- Standard diameters: 10mm to 500mm
- Custom lengths up to 12 meters
- Surface finishes: Black, Bright, Peeled, Turned
- Heat treatment options: Annealed, Quenched & Tempered
- Special packaging options available
Delivery Information
| Parameter |
Details |
| Standard Lead Time |
7-14 working days |
| Custom Orders Lead Time |
15-30 working days (depending on specifications) |
| Packaging |
Standard: Wooden crates or bundles with protective covering |
| Shipping |
Sea, air, or land transportation available |
Certifications
ISO 9001:2015
ISO 14001:2015
OHSAS 18001:2007
EN 10204 3.1 Material Test Certificate
CE Marking
Frequently Asked Questions
What is the typical delivery time for standard orders?
For standard sizes and specifications, our typical delivery time is 7-14 working days. Custom orders may take longer depending on the specific requirements.
Can you provide material test reports with the shipment?
Yes, we can provide EN 10204 3.1 material test certificates with every shipment. These certificates verify the chemical composition and mechanical properties of the material.
What surface finishes are available for these steel bars?
We offer several surface finishes including black, bright, peeled, and turned. The appropriate finish depends on your specific application requirements.
Do you offer heat treatment services?
Yes, we can provide various heat treatment options including annealing, quenching, and tempering to achieve the required mechanical properties for your application.