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While both ASTM A203 Grade B and ASTM A106 Grade B serve critical roles in industrial applications, they are fundamentally different in composition, purpose, and performance.2026-06-01
AISI 4130 Alloy structural steel plate composition
AISI 4130 Alloy structural steel plate is oil production a widely used structural steel,and 4130 alloy stuctural steel plate has high hardenability. AISI4130 steel plate welding quality and latitude, particularly in the field of welding, the welding method can affect latitude, and process control of welding.
AISI 4130 stuctural steel plate contains chromium and molybdenum as strengthening agents. It has low carbon content, and hence it can be welded easily.
Chemical composition (%)
S: allow the residual content ≤0.035 P: allow the residual content ≤0.035 Cr: 0.80 ~ 1.10
Ni: to allow the residual content ≤0.030 Cu: to allow the residual content ≤0.030 Mo: 0.15 ~ 0.25
Mechanical Properties
Tensile strength σb (MPa): ≥930 (95)
Yield strength σs (MPa): ≥785 (80)
Elongation δ5 (%): ≥12
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