Alloy Steel 4130, also referred to as Chromoly Steel and SAE/AISI 4130, is a chromium and molybdenum alloy steel. Known for its responsiveness to mechanical and heat treatments, Alloy Steel 4130 is weldable by most commercially popular methods. Cold working is possible and forming often takes place in the annealed condition. It is important to note that the machining of Alloy Steel 4130 is difficult when the hardness of the alloy increases. Alloy Steel 4130 is popular in a number of critical industries such as aerospace, automotive, and oil and gas.

Uses for Alloy Steel 4130 include:

• Valve bodies
• Pumps
• Fittings
• Engine mounts
• Welded tubing.

All Alloy Steel 4130 must contain a specific combination of chemicals that include:

• Fe Balance
• Cr 0.80-1.10%
• Mn 0.40-0.60%
• C 0.28-0.33%
• Si 0.15%-0.30%
• Mo 0.15-0.25%
• S 0.040%
• P 0.035%

Continental Steel offers Alloy Steel 4130 in a variety of sizes and shapes that include rounds, bars, and plates. Other than SAE and AISI, all of our Steel Alloy 4130 meets or exceeds leading industry standards like ASTM, AMS, DIN, Mil S, BS, and more. To learn more about our selection of Alloy Steel 4130 or any of our other products and services, please contact the experts at Continental Steel today.