Seamless Steel Tube Library: American Standard ASTM A135A Seamless Steel Tube Chemical Composition and Mechanical Properties
Hit：202026-05-19 09:19:52
Seamless Steel Tube Library: American Standard ASTM A135A Seamless Steel Tube Chemical Composition and Mechanical Properties
ASTM A135 is a standard for resistance welded steel pipes used for transporting gases, steam, water, or other liquids. Its chemical composition and mechanical properties vary depending on the grade (Grade A and Grade B). The following is a detailed analysis based on standard specifications:
Chemical composition (melting analysis)
ASTM A135 is a standard for resistance welded steel pipes used for transporting gases, steam, water, or other liquids. Its chemical composition and mechanical properties vary depending on the grade (Grade A and Grade B). The following is a detailed analysis based on standard specifications:
Chemical composition (melting analysis)
Element Grade A maximum value Grade B maximum value
Carbon (C) 0.25% 0.30%
Manganese (Mn) 0.95% 1.35%
Phosphorus (P) 0.050% 0.050%
Sulfur (S) 0.050% 0.050%
Silicon (Si) 0.10% 0.10%
Mechanical performance
Performance indicators Grade A Grade B
Tensile strength ≥ 330 MPa (48000 psi) ≥ 415 MPa (60000 psi)
Yield Strength ≥ 205 MPa (30000 psi) ≥ 240 MPa (35000 psi)
Elongation rate (gauge length 50.8mm) ≥ 20% ≥ 20%
In addition, steel pipes need to undergo flattening test and hydrostatic test, and non-destructive electrical testing (such as eddy current or ultrasonic) can also be used
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