Alloy 303 represents current maximum machinability in the 300 Series of Stainless Steels. This is of particular advantage for machining in automatic screw machines. Machinability rating (G1212) 79%.

Alloy 300 - 2000 is the next generation of super free machining 300 Series, available now.

Machinability, tool life and surface finish is improved by 20/25% over current generation 303.

Alloy 303 - 2000 is now available for shops requiring the maximum machinable 300 Series Stainless Steels on the market.

Both alloys have somewhat less corrosion resistance compared to 304 Stainless. Welding joint efficiency as with all alloys with higher sulfur is less than 304 Stainless.

Typical application include: gears, studs, bolds, nuts, shafts and bushings.

Room Temperature Mechanical Properties (average)
Tensile Strength, psi Yield Strength (0.2% offset),psi Elongation % in 2" Hardness (BHN)	90,000 35,000 50 160

Physical Properties
Specific Gravity	7.8
Density 1b/in 3	0.29
Mean coefficient of thermal expansion 10-6/degrees F (32/1200 degrees F) 10-6/degrees C (0/649 degrees C)	10.4 - 18.7
Electrical Resistivity (RT) ohm-cir mil/ft Microhm-mm	433 - 720
Specific heat Btu/1b.degrees F (32/212 degrees F) KJ/Kg.K (0/100 degrees C)	0.12 - 0.50

Availablility	303
Wire and Bar	from .059 to 16" diameter
Hexagon	from .125 to 3" hexagon
Square	from .125 to 6" square

Availablility	303-2000
Wire and Bar	from .059 to 1-1/2" diameter
Hexagon	from .125 to .500 hexagon
Square	from .125 to .500 square