Carbon Steel 1040

 

Applications

Used for crankshafts, couplings and cold headed parts.

Forming

Forming of 1040 steel in the annealed condition is readily accomplished.

Welding

1040 steel is weldable by all of the welding methods. However with its higher carbon content it is important to use both pre-heat at 300 to 500 F and post-heat at 1100 to 1200 F practice per an approved welding procedure.

Heat Treatment

This steel responds well to hardening by heat treatment at 1550 to 1650 F followed by water quench and then tempering to strength level desired.

Forging

Forge at 2300 F down to 1800 F.

Hot Working

Hot work from 900 to 200 F.

Annealing

Anneal at 1600 to 1800 F and slow cool in the furnace for a full anneal. A stress relief anneal may be done at 1100 F and a normalizing treatment may be done at 1650 F with slow cooling.

Aging

Not applicable.

Density: 0.284

Specific Gravity: 7.86

Melting Point: 2770

MoETensile: 30

 

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