AISI 4140
Low Alloy
AISI 4140 is a chromium-molybdenum alloy steel known for its high strength, toughness, and wear resistance. It contains approximately 0.38-0.43% carbon, 0.9-1.2% chromium, and 0.15-0.25% molybdenum, making it suitable for hardening through heat treatment. AISI 4140 is commonly used in applications like gears, axles, and heavy machinery components due to its excellent mechanical properties and ability to withstand high stress. It can be easily machined and welded, although preheating is recommended for welding to prevent cracking. Its versatility makes AISI 4140 a popular choice in both industrial and automotive sectors.
