440SS (Stainless Steel Balls)

 

Stainless Steel Type 440 C Balls AISI type 440-C 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 bearing and valve applications where severe environmental conditions may occure. Consumable electrode vacuum meleted (CEVM) and vacuum induction melted/vacuum arc remelted (VIM-MAR) materials are available upon request.

Click here for sizes and pricing

Stainless Steel 440-C Balls:   Available Grades and Sizes Miniature Precision Stainless Steel 440-C Balls Grade Size Range in Inches and Millimeters 3 .025 - 3/16                          0.793 - 4.792 5 .025 - 3/16                          0.793 - 4.762 10 1/32 - 11/64                       0.793 - 4.365 24 1/32 - 11/64                       0.793 - 4.365 48 1/32 - 11/64                       0.793 - 4.365 100 1/32 - 3/32                          0.793 - 2.381 200 1/32 - 3/32                          0.793 - 2.381

Stainless Steel 440-C Balls:   Available Grades and Sizes     Precision Stainless Steel 440-C Balls Grade Size Range in Inches and Millimeters 10 3/16 - 1 1/4                         4.762 - 31.750 16 3/16 - 1 1/4                         4.762 - 31.750 24 3/16 - 2                               4.762 - 50.800 48 3/16 - 2                               4.762 - 50.800 100 1/8 - 4 1/2                          3.175 - 114.300 200 1/8 - 4 1/2                          3.175 - 114.300 1000 1/8 - 4 1/2                          3.175 - 114.300 Media 1/8 - 3/4                              3.175 - 19.050

Balls per Pound Size Balls per Pound Inches Millimeters 1/32 0.793 226,000 3/64 1.190 66,900 1/16 1.587 28,500 3/32 2.381 8,300 1/8 3.175 3,530 5/32 3.968 1,800 3/16 4.762 1,050 7/32 5.556 659 1/4 6.350 441 9/32 7.143 310 5/16 7.937 226 11/32 8.731 170 3/8 9.525 131 7/16 11.112 82.3 1/2 12.700 55.2 9/16 14.287 38.7 5/8 15.875 28.2 11/16 17.462 21.2 3/4 19.050 16.3 13/16 20.637 12.9 7/8 22.225 10.3 15/16 23.812 8.37 1 25.400 5.89 1 1/16 26.987 5.75 1 1/8 28.575 4.84 1 3/16 30.162 4.12

Balls per Pound Size Balls per Pound Inches Millimeters 1 1/4 31.750 3.53 1 5/16 33.337 3.05 1 3/8 34.925 2.65 1 7/16 36.512 2.32 1 1/2 38.100 2.04 1 9/16 39.687 1.81 1 5/8 41.275 1.61 1 11/16 42.862 1.43 1 3/4 44.450 1.29 1 13/16 46.037 1.16 1 7/8 47.625 1.05 1 15/16 49.212 .948 2 50.80 .862 2 1/8 53.975 .719 2 1/4 57.151 .604 2 3/8 60.325 .515 2 1/2 63.500 .441 2 5/8 66.675 .373 2 3/4 69.850 .325 2 7/8 73.025 .284 3 76.200 .250 3 1/4 82.550 .197 3 1/2 88.900 .157 3 3/4 95.250 .128 4 101.600 .105 4/1/2 114.300 .074

	Material Analysis: All sizes and grades of corrosion-resisting hardened stainless steel balls are made to ASTM 756.  Passivation to ASTM A380 and QQ P 35 is available upon request.

	Material CDA Federal Military & Gov’t Std. ASTM UNS AMS Type 440 440-C QQ-S-763b MS 19060 ASTM-756 S-44004 5630G 5880A

Chemical Analysis Carbon................................................................ 0.95% to 1.10% Chromium........................................................... 16.0% to 18.0% Manganese......................................................... 1.0% maximum Silicon.................................................................. 1.0% maximum Molybdenum........................................................ 0.40% to 0.65% Phosphorus......................................................... 0.025% maximum Sulphur................................................................. 0.025% maximum Nickel................................................................... 0.75% maximum Copper................................................................. 0.5% maximum

Mechanical Properties Type 440-C steel balls are uniformly hardened and tempered throughout their entire diameter to achieve maximum strenght and quality.  Ball hardness is 58-65 Rockwell “C” as measured on parallel flat surfaces. Also, type 440-C stainless steel balls are magnetic. Custom heat treating is available for special hardness requirements. Tensile Strength.................................................. 285,000 psi Yield Strength...................................................... 275,000 psi Elongation in two inches.................................... 2.0% Reduction in area................................................ 10.0% Modulus of elasticity........................................... 29,500,000 psi Density................................................................. 0.277 lbs./cu. in.