The manufacturing process of 30CrMnSi cold-drawn precision steel tube includes cold rolling or cold drawing treatment, which makes its inner and outer walls free of oxide layer, withstand high pressure without leakage, have high precision and high finish, and are not easy to deform during cold bending, and have no cracks during expansion and flattening. It has good wear resistance and fatigue resistance, and is suitable for manufacturing parts that need to withstand high-strength and high-frequency loads.
30CrMnSi precision seamless steel tube is often used to manufacture high-precision, high-strength, and high-wear-resistant mechanical parts and engineering parts, such as bearings, pins, machine tool bearing seats, mechanical transmission parts, etc. In the automotive industry, this steel tube can also be used to manufacture components such as automotive drive shafts, suspension systems, and steering systems.
Chemical composition of 30CrMnSiA seamless steel pipe
C: 0.28～0.34
Si: 0.90～1.20
Mn: 0.80～1.10
S: ≤0.025
P: ≤0.025
Cr: 0.80～1.10
Ni: ≤0.030
Cu: ≤0.025
Mechanical properties of 30CrMnSi steel pipe
Tensile strength σb (MPa): ≥1080
Yield strength σs (MPa): ≥835
Elongation δ5 (%): ≥10
Area shrinkage ψ (%): ≥45
Impact energy Akv (J): ≥39
Impact toughness value αkv (J/cm²): ≥49
Hardness: ≤229HB
30CrMnSi Seamless Precision Pipe
Sample size: The sample blank size is 25mm
Heat treatment specifications and metallographic structure:
Heat treatment specifications: quenching at 880°C, oil cooling; tempering at 540°C, water cooling, oil cooling.
Why Choose GNEE
GNEE's main products are seamless steel pipes, carbon steel pipes, alloy steel pipes, stainless steel pipes, and boiler pipes, with an inventory of 1 million tons.
Our company has been adhering to the principle of quality first and service first for many years. Provide high-quality steel for national key projects such as steel structure engineering, highway and railway construction, hydropower stations, mines, and factories.
If you would like to know more about our company or our products, please feel free to contact us. sales@gneetube.com
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