Heat Treating 4340 Alloy Steel

The inclusion of nickel improves hardenability.

Heat treating 4340 alloy steel.

4340 steel heat treatment. Download certificates from activity after your order ships. Normalizing annealing hardening tempering spheroidization stress relief etc. Aisi 4340 alloy steel can be cold worked using all conventional methods in the annealed condition.

Aisi 4340 is a heat treatable low alloy steel containing nickel chromium and molybdenum. 4340 heat treat normalizing. As mentioned above pre hardened and tempered 4340 steel bars or plates can be further surface hardened by either the flame or induction hardening methods resulting in a case hardness in excess of rc 50. It has high ductility.

It can be through hardened in large sections. Regarded industry wide for its toughness 4340 supplies high strength in the heat treated condition while still maintaining excellent fatigue strength over time. Atlas 4340 is a nominally 1 8 percent nickel chromium molybdenum low alloy steel of high hardenability with high strength and toughness in relatively large sections achieved with a quench and temper heat treatment. 4340 alloy steel applications.

As a quality grade alloy steel it offers toughness and high strength in the heat treated condition with good fatigue strength. Aisi 4340 alloy steel is forged at 427 to 1233 c 1800 to 2250 f. Aisi 4340 alloy steel is heat treated at 830 c 1525 f followed by quenching in oil. Heat treated quenched and tempered to high strength or annealed for ease of machining and subsequent heat treatment.

For technical drawings and 3 d models click on a part number. Premium aircraft quality is intended for. Aisi 4340 alloy steel is heat treated at 830 c 1525 f followed by quenching in oil. Aisi sae 4340 alloy steel 4340 is a nickel chromium molybdenum alloy steel known for its toughness and its ability to attain high strengths in the heat treated condition.

Commercial and military aircraft automotive systems forged hydraulic and other machine tool applications forged steel crankshafts. Alloy steel 4340 heat treatment including. 4340 heat treated hot rolled cold finished. Pacific 4340 is available in two conditions.

It is a nickel chromium molybdenum medium carbon alloy steel with deep hardenability. 4340 has been used typically for parts requiring a through hardening capability up to 3 5 inches 89 mm in nominal thickness at time of heat treatment and subject to rigid magnetic particle inspection standards but usage is not limited to such applications. Certificates with a traceable lot number are available for these products. Flame or induction hardening.

Aisi 4340 alloy steel aisi 4340 steel stockholders and suppliers delivering to the whole of the uk. A contemporary alternative to 4340 is atlas 6582 through hardening steel that has improved through hardening characteristics and.