Type 302: Cr. 18, Ni. 8 (18-8 type), austenitic, hardenable by cold work only; t.s.
80-250,000 psi.; elongation in 2 in., 60-5%; fair machinability; excellent
cold forming and welding properties. Furnished in sheet, strip, plate,
bar, rod, forging billets and tube rounds, tubing, cold drawn shapes and
structural shapes. For parts in acid handling food and dairy equipment;
shafting, bearing plates, heat exchanger tubes, hydraulic tubing, piston
rods, plungers, etc.

Type 303: Cr. 18, Ni. 8 (18-8 type), austenitic, hardenable by cold work only; t.s.,
80-200,000 psi.; y.s. 30-135,000 psi.; elong. in 2 in., 55-10%; good machinability;
fair cold forming and welding properties. In sheet, strip, plate, bar,
rod, forging billets, tube rounds, tubing cold drawn and structural shapes.
For working parts in pumps and valves which must resist corrosion; screw
machine parts requiring strength, good corrosion resistance.

Type 304: Cr. 18, Ni. 8 (18-8 type), austenitic, hardenable by cold work only; t.s.
85-250,000 psi.; elongation in 2 in., 60-5%; slightly better corrosion
resistance than Type 302. Furnished in rods, bars, billets, wire, sheet,
plate strip, tubing and castings. For parts in chemical equipment such
as shafting, bearing plates, heat exchanger tubes, etc.

Type 316: Cr. 18, Ni. 12, Mo. 3(18-12-3 type), austenitic, hardenable by cold work
only; t.s., 80-170,000 psi.; y.s., 35-150,000 psi.; elong. in 2 in., 55-5%;
fair machinability; excellent welding, cold forming properties. Best creep
strength at high temp. and best corrosion resistance of all grades. In
sheet, strip, plate, bar, rod, forging billets, tube rounds, tubing cold
drawn and structural shapes.

Type 410: Cr. 12 (straight chromium type), hardenable by heat treatment; t.s., 60-180,000
psi.; y.s., 30-160,000 psi.; elong. in 2 in., 30-a5%; good machinability,
cold forming properties; good welding properties when annealed; most popular
forging grade. In sheet, strip, plate, bar, rod, forging billets, tube
rounds, tubing, cold drawn and structural shapes. Used where corrosion
not severe, for bolts, nuts, shafting turbine blading, valve trim, heat-treated
parts; where hardness, toughness desired.