420SS (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.

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	420 Stainless Steel Balls:   Available Grades and Sizes        Grade Size Range in Inches and Millimeters Pen 1/64 - 1/16                        . 3mm - 1.580mm 24 - 1000 .01968 - 2                           5mm - 50.800mm

Balls per Pound Size Balls per Pound Inches Millimeters 3/32 2.381 8,000 1/8 3.175 3,420 5/32 3.968 1,750 3/16 4.762 1,010 7/32 5.556 638 1/4 6.350 427 9/32 7.143 300 5/16 7.9.7 219 11/32 8.731 164 3/8 9.525 127 13/32 10.318 99.6 7/16 11.112 79.7 15/32 11.906 64.8 1/2 12.700 53.4 17/32 13.493 44.5 9/16 14.287 37.5 19/32 15.081 31.9 5/8 15.875 27.4 21/32 16.668 23.6 11/16 17.462 20.6 23/32 18.256 18.0 3/4 19.050 15.8 25/32 19.843 14.0 13/16 20.637 12.5 27/32 21.431 11.1

Balls per Pound Size Balls per Pound Inches Millimeters 7/8 22.225 9.97 29/32 23.018 8.97 15/16 23.812 8.10 31/32 24.606 7.35 1 25.400 6.68 1 1/8 28.575 4.69 1 1/4 31.750 3.42 1 3/8 34.925 2.57 1 1/2 38.100 1.98 1 5/8 41.275 1.56 1 3/4 44.450 1.26 1 7/8 47.625 1.02 2 50.800 .844

	Material Analysis: All sizes and grades are of the highest quality and in accordance with ASTM 756. Passivation to ASTM A380 is available upon request..

	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