Tips for Successfully Welding 4130 Heat-Treatable Low-Alloy Steel
The higher levels of carbon, chromium, and molybdenum in these steels make them highly durable and strong, but they are also more susceptible to cracking. Learn how the right filler metal can help make welding these steels easier when fabricating or repairing new products. In addition to the fabrication and repair of shafts, gears, forgings, and other components for heavy machinery, shafts, gears, forgings, and other components are subject to tough, demanding environments are low-alloy steels such as AISI/SAE la 4130-steel weldability and 4130 weldability , which have a chemical composition that allows them to be heat treatable into high-tensile steels. Mechanical properties are not included in AISI 4130 properties and 4140 specifications, only chemical composition. As with 4130, 4140 is primarily made up of carbon, chromium, and molybdenum. Carbon content is only slightly different between 4130 and 4140, with 4130 having 0.3 percent carbon and 4140 hav...