![]() ![]() ![]() AISI 4130 steel is usually supplied as round bar commonly in the hardened and tempered condition.ĪISI/SAE 4130 steel grade is a versatile alloy with good atmospheric corrosion resistance and reasonable strength up to around 315º C (600º F). Annealing ASTM 4130 alloy steel offers excellent ductility. With the proper heat treatment it is also readily machined. ![]() It is similar to 4140 steel which has a higher carbon level (0.28-0.33%), giving 4130 material improved weldability, at the expense of through thickness strength. ASTM 4140 steel is also commonly referred to as a chromoly steel, or chrome moly steel, containing nominally 0.28-0.33% Carbon, 0.8-1.1% Chromium and 0.15-0.25% Molybdenum. AISI 4130 alloy steel is a medium carbon, low alloy steel in ASTM A29 standard.
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