Qilu’s materials processing guidelines are designed to help customers with plate processing operations such as cutting, bending, welding, machining and heat treatment. Based on the results from extensive testing performed by our dedicated Research & Development Centre, the guidelines cover a wide range of industrial conditions and represent to the best of our knowledge, current practices in the industry.
What is 4130 Alloy Steel?
AISI 4130 alloy steel is a medium carbon, low alloy steel in ASTM 29 standard. 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. 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. With the proper heat treatment it is also readily machined. Annealing ASTM 4130 alloy steel offers excellent ductility. AISI 4130 steel is usually supplied as round bar commonly in the hardened and tempered condition.
