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High-Precision Products: Balls per Pound
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Material
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Size Range
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Grade
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440C-SS
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.03937 - 1
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3 - 5
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440C VM
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.03937 - 1
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3 - 10
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Additional Services: DFAR, Stabillization, Vaccum Melt, Air Melt, Passivation
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Standard Products: Balls per Pound
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Material
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Size Range
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Grade
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440SS
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3/16 - 1 1/2
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10 - 48
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440C-SS
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3/16 - 1 1/2
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10 - 48
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440SS
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1/8 - 2
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100 - 1000
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440C-SS
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1/8 - 2
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100 - 1000
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440SS
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1/16 - 6
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24 - 1000 (Special Sizes)
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Stainless Steel Type 440 C Balls Download Product Sheet
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 occur.
Consumable electrode vacuum meleted (CEVM) and vacuum induction melted/vacuum arc remelted (VIM-MAR) materials are available upon request.
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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.
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Material
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CDA
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Federal
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Military & Gov’t Std.
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ASTM
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UNS
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AMS
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Type 440
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440-C
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QQ-S-763b
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MS 19060
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ASTM-756
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S-44004
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5630G
5880A
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Chemical Analysis:
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Carbon...................................
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0.95% to 1.10%
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Chromium...............................
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16.0% to 18.0%
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Manganese.............................
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1.0% maximum
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Silicon....................................
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1.0% maximum
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Molybdenum...........................
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0.40% to 0.65%
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Phosphorus............................
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0.025% maximum
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Sulphur...................................
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0.025% maximum
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Nickel.....................................
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0.75% maximum
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Copper...................................
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0.5% maximum
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Mechanical Properties:
Type 440-C steel balls are uniformly hardened and tempered throughout their entire diameter to achieve maximum strength 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.
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Tensile Strength.......................
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285,000 psi
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Yield Strength..........................
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275,000 psi
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Elongation in two inches...........
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2.0%
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Reduction in area.....................
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10.0%
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Modulus of elasticity................
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29,500,000 psi
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Density...................................
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0.277 lbs./cu. in.
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