330 stainless steels offer a wide variety of high level of corrosion resistance, particularly to carburization, oxidation and nitridation. In aqueous situations, the alloy's chromium content gives resistance to oxidizing conditions while its nickel content imparts resistance to reducing conditions. The high nickel also gives 330 good resistances to chloride-ion stress- corrosion cracking.
FabricationStainless Steel 330 is promptly fabricated by a standard commercial process. In comparison to carbon steel, stainless steels are tougher and tend to work harden quickly. Alloy 330's rate of work hardening is similar to austenitic stainless steels.
MachiningThis alloy can be satisfactorily machined with proper practices. Slow speeds, sulphurized lubricants, positive feeds and rigid mounts are generally recommended.
WeldingCan be effectively welded using GAW methods. Use either 330 or Inco 800 filler materials.
Hot WorkingAny hot work should begin at 2100-2150 F and finish at 1800 F.
Cold Working330 are more difficult to cold form than standard 18-8 stainless steels because of its relatively high strength and work hardening rate. Suppose to utilize higher forces than normal and note its' high spring back.
AnnealingSoak at 2050-2200 F, air quench.
Hardening330 will just harden upon cold reduction and this will not respond to heat treatment.
Chemical Composition %C | Si | P | S | Cr | Mn | Ni | Fe |
0.08 max | 0.75 - 1.50 | 0.03 max | 0.03 max | 17.0 - 20.0 | 2.0 max | 34.0 - 37.0 | Remainder |
Tensile Strength (ksi) | 0.2% Yield Strength (ksi) | Elongation% in 2 inches |
70 | 30 | 30 |
Units | Temperature in °C | |
Density | 8.0 g/cm³ | Room |
Specific Heat | 0.12 Kcal/kg.C | 22° |
Melting Range | 1400 - 1425 °C | - |
Modulus of Elasticity | 197 KN/mm² | 20° |
Electrical Resistivity | 101.7 µΩ.cm | Room |
Coefficient of Expansion | 14.4 µm/m °C | 20 - 100° |
Thermal Conductivity | 12.5 W/m -°K | 24° |
Pipe / Tube | Sheet / Plate | Bar Forging / Forging Stock |
B 535, B 710 | B 536 | B 511, B 512 |
Manufacturing |
Refractory Anchors |
Fasteners |
Custom Machining |
Custom Fabrication |
Piping / Spools |
Stamped Parts |
B/W Fittings |
S/W Fittings |
Flanges |
Compression Fittings |
Raw Materials |
Pipes |
Tubes |
Bars |
Sheets |
Plates |