45# Precision Medium Carbon Seamless Steel Pipe:
Product Description: 45# Precision Medium Carbon Seamless Steel Pipes are high-precision tubes made from medium carbon steel. They are characterized by their seamless structure, which provides uniformity and strength. These pipes are manufactured to close tolerances, making them ideal for applications where precision is critical. The '45#' grade indicates a medium carbon steel with approximately 0.45% carbon content, offering good strength and hardness.
Product Parameter Specifications:
Parameter | Specification | Units |
Standard | GB/T 8162, DIN 2391, EN 10305, ASTM A519 | - |
Grade | 45# | - |
Outer Diameter | Ranges from 6mm to 377mm depending on the specific application | mm |
Wall Thickness | Varies with diameter; specific range per product specification | mm |
Length | Typically 3m to 12m, customizable based on requirements | m |
Tolerance | Close tolerances on diameter and wall thickness | - |
Product Applications:
- Mechanical Components: Used in the manufacturing of precision mechanical components requiring tight tolerances.
- Automotive Industry: Suitable for the production of automotive parts where strength and precision are needed.
- Hydraulic Systems: Ideal for hydraulic and pneumatic systems due to their precise internal diameters.
- Instrumentation: Employed in the construction of precision instruments and devices.
- Structural Parts: Utilized in structural applications where medium strength and good wear resistance are required.
Types of 45# Precision Medium Carbon Seamless Steel Pipes:
- Precision Seamless Tubes: Designed for applications requiring close dimensional accuracy.
- Cold-Drawn Tubes: Offer higher strength and better surface finish compared to hot-finished tubes.
- Heat-Treated Tubes: Subjected to thermal treatment processes for enhanced mechanical properties.
Mechanical Properties:
Property | Typical Range/Value for 45# Steel | Units |
Tensile Strength | 600-1100 MPa | MPa |
Yield Strength | ≥ 355 MPa | MPa |
Elongation | ≥ 10% (for diameters ≤ 50mm) | % |
| ≥ 8% (for diameters > 50mm) | % |
Chemical Composition:
Element | Typical Range (%) for 45# Steel |
Carbon (C) | 0.42-0.50 |
Manganese (Mn) | ≤ 0.80 |
Phosphorus (P) | ≤ 0.035 |
Sulfur (S) | ≤ 0.035 |


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