TAGS: steel | carbon | seamless |
The difference between carbon steel seamless pipe and alloy steel seamless pipe is mainly reflected in material, strength and corrosion resistance. Here are their main differences:
Material: The material of carbon steel seamless pipe is carbon steel, while the material of alloy steel seamless pipe contains other metal elements (such as chromium, nickel, etc.).
Strength: The strength of alloy steel seamless pipe is higher than that of carbon steel seamless pipe, because alloying elements can improve the hardness and toughness of steel.
Corrosion resistance: Alloy steel seamless pipes have better corrosion resistance than carbon steel seamless pipes, because alloying elements can improve the corrosion resistance of steel.
Price: The price of alloy steel seamless pipe is higher than that of carbon steel seamless pipe.
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Material
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Carbon Steel Seamless Pipe
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Alloy Steel Seamless Pipe
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|---|---|---|
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Chemical Composition (%)
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C < 0.2% S < 0.5% P < 0.035%
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Different contents of elements such as Cr, Ni, Mo, V, Ti, generally 18-45Cr
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|
Tensile Strength (MPa)
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≥470 MPa
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≥930 MPa
|
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Yield Strength (MPa)
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≥215 MPa
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≥450 MPa
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Elongation (%)
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≥12%
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≥16%
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Impact Toughness (kJ/m2)
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≥27 J/cm2
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≥41 J/cm2
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Hardness (HB)
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≤207
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>207
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Heat Treatment
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No heat treatment or only normalizing treatment
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Heat treatment processes such as quenching and tempering
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Application
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Generally used for low-pressure fluid transport pipelines, mechanical structural components, etc.
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Generally used for high-pressure, high-temperature, and corrosion-resistant pipeline systems, petrochemical equipment, etc
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