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Carbon		0.08 max
Chromium		17 - 20
Copper		1 max
Iron		Balance
Lead		0.005 max
Manganese		2 max
Nickel		34 - 37
Phosphorus		0.03 max
Silicon		0.75 - 1.5
Sulphur		0.03 max
Tin		0.025 max

Principal Design Features		330 is an austenitic, nickel-chromium-iron-silicon alloy. It combines excellent resistance to carburization and oxidation at temperatures up to 2200 F(1200 C) with high strength.

Applications		Extensively used in high temperature environments where resistance to the combine effects of thermal cycling and carburization is necessary. Used in a variety of furnace components as well as in gas turbines, heat exchangers, general heat treating equipment and neutral and cyanide salt pots.

Machinability		With proper practices this alloy can be satisfactorily machined. Slow speeds, positive feeds, sulphurized lubricants and rigid mounts are generally recommended.

Welding		Can be successfully welded using GAW techniques. Use either 330 or Inco 800 filler materials.

Hot Working		Any hot work should commence at 2100-2150 F and finish at 1800 F.

Cold Working		Due to its relatively high strength and work hardening rate, 330 is more difficult to cold form than standard 18-8 stainless steels. Expect to use higher forces than normal and note its' elevated springback.

Annealing		Soak at 2050-2200 F, air quench.

Hardening		330 will not respond to heat treatment.; it will only harden upon cold reduction.

Physical Data : [top]

Density (lb / cu. in.)	0.289
Specific Gravity	7.99
Specific Heat (Btu/lb/Deg F - [32-212 Deg F])	0.11
Magnetic Permeability	1.02
Modulus of Elasticity Tension	28.5

MSO currently has no data available for this grade.