420-SS Stainless Steel Balls

AISI type 420 stainless steel balls afford the advantage of maximum hardness combined with corrosion-resisting properties. This hardness, together with precise geometry and fine surface finish, makes them especially useful for both bearing and valve applications, as well as writing instruments and lighters.

Material	AISI	Federal	Military	ASTM	UNS	AMS
Type 420	420	QQ-S-763	MS 19060	A-756	S-42000	5630

Chemical Analysis
Carbon................................................................	0.30% maximum
Chromium...........................................................	12.0% to 14.0%
Manganese.........................................................	1.0% maximum
Silicon..................................................................	1.0% maximum
Nickel	10.0% to 14.0%
Phosphorus.........................................................	0.04% maximum
Sulphur................................................................	0.03% maximum

Mechanical Properties Hardness as measured on parallel flat surfaces is Rockwell "C" 52.
Tensile Strength..................................................	95,000 to 250,000 psi
Yield Strength	50,000 to 215,000 psi
Elongation in two inches....................................	8.0% to 25.0%
Reduction in area................................................	25.0% to 55.0%
Modulus of elasticity...........................................	29,000,000 psi
Density.................................................................	0.279 lbs./cu. in