Seamless Steel Pipe Library: Chemical Composition and Mechanical Properties of P245GH Seamless Steel Pipe
Hit：102026-08-19 16:12:52
Seamless Steel Pipe Library: Chemical Composition and Mechanical Properties of P245GH Seamless Steel Pipe
This material features a low upper limit of carbon content and strict control over sulfur and phosphorus impurities, delivering excellent weldability. It can be stably used under working conditions ranging from -10°C to 400°C, making it widely applicable in pressure-bearing scenarios such as boilers and high-temperature, high-pressure pipelines.
Mechanical Properties (Categorized by Wall Thickness)
Wall thickness t ≤ 35mm:
Tensile strength: 410~530 MPa
Yield strength (ReH): ≥245MPa
Post-fracture elongation: longitudinal ≥25%, transverse/longitudinal ≥23%
Room temperature impact absorption energy KV2: Longitudinal ≥40J, Transverse/Tangential ≥27J
35mm＜t≤160mm：
Tensile strength: 410~530 MPa
Yield strength (ReH): ≥220MPa
The requirements for elongation after fracture and impact absorption energy are consistent with the specifications for t≤35mm
Chemical composition (complies with EN 10216-2 standard)
Carbon (C): 0.08%~0.20%
Silicon (Si): ≤0.40%
Manganese (Mn): 0.50%~1.30%
Phosphorus (P): ≤0.025%
Sulfur (S): ≤0.015%
Residual element control: Cr≤0.3%, Ni≤0.3%, Cu≤0.3%, Mo≤0.08%, with Cr+Cu+Mo+Ni≤0.70%, and carbon equivalent≤0.41%
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