The domestic grade corresponding to 4130 seamless alloy pipe is 30CrMo, which is an alloy steel containing chromium and molybdenum. Its tensile strength is generally above 750 MPa. Thin-walled 4130 steel pipes are often used to manufacture bicycle frames. The cold-drawn seamless steel pipe 4130 contains carbon at 0.26-0.34%, silicon at 0.17-0.37%, manganese at 0.40-0.70%, molybdenum at 0.15-0.25%, and chromium at 0.80-1.10%.
The 4130 alloy steel pipe exhibits high strength and toughness, with relatively high hardenability, and a critical hardening diameter of 15-70 mm in oil. It also demonstrates good thermal strength, maintaining sufficient high-temperature strength below 500℃, but its strength will decline significantly at 550℃.
Material Specification of 4130 Chromoly Seamless Tubing
| Chemical Composition | Carbon: 0.28-0.33% |
| Silicon: 0.15-0.35% | |
| Manganese: 0.40-0.60% | |
| Phosphorus: ≤0.035% | |
| Sulfur: ≤0.040% | |
| Chromium: 0.80-1.10% | |
| Molybdenum: 0.15-0.25% | |
| Mechanical Properties | Tensile Strength: ≥630 MPa |
| Yield Strength: ≥413 MPa | |
| Elongation: ≥20% | |
| Hardness: ≤229 HB | |
| Applications | Oil Extraction, Natural Gas Transmission, Thermal Power Generation, and Other High-strength Applications |
| Processing | Good weldability and machinability, suitable for conventional welding methods |
4130 Chromoly Round Steel Tubing
reliable 4130 alloy pipe product from GNEE
4130 automotive steel pipe is a high-quality carbon structural steel and alloy structure hot-rolled seamless steel pipe. It is mainly used for the production of automobile axle housings and drive axle shaft tubes.
Gnee can provide customers with 4130 and 4140 grades of automotive steel pipes. These steel tubes have high strength, high durability and good fatigue resistance, and can meet the high requirements of the automotive industry for axle bushings. Please feel free to contact us for more information. sales@gneetube.com
Factory environment of A519 4130 carbon pipe
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FAQ
Q.Is 4130 seamless?
A.Precision 4130 Tubing for a variety of applications where high-stress, hydraulic, oil, fluids are essential.
Q.What services do you provide?
A.Customized service for each customer, please feel free to contact us!
Q.Do you have quality control?
A.Yes, we have got BV.SGS certification.
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