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Stainless Steel Balls Chart

Material Analysis 18-8 AISI 316 AISI Carpenter 20Cb-3 440C AISI
Carbon 0.08% 0.08% 0.06% 0.95/1.20%
Manganese -- 2.00% max. 2.00% max. 1.00% max.
Phosphorus -- 0.045% max. 0.035% max. 0.04% max.
Sulfur -- 0.030% max. 0.035% max. 0.03% max.
Silicon -- 1.00% max. 1.00% max. 1.00% max.
Nickel 8.00/10.00% 10.00/14.00% 32.50/35.00% --
Chromium 17.00/19.00% 16.00/18.00% 19.00/21.00% 16.00/18.00%
Molybdenum -- 2.00/3.00% 2.00/3.00% 0.75% max.
Copper -- -- 3.00/4.00% --
Columbium + Tantalum -- -- 8xC min./1.00 max. 0.75% max.
 
Physical Properties
Specific Gravity 8.03 7.95 8.08 7.75
Density 0.286 lbs/in.3 0.287 lbs/in.3 0.292 lbs/in.3 0.28 lbs/in.3
 
Mechanical Properties
Tensile Strength 85 Kpsi 82 Kpsi 90 Kpsi 285 Kpsi
Yield Strength 35 Kpsi 36 Kpsi 46 Kpsi 275 Kpsi
Elongation (3") 60% 69% 45% (2inches) 2%
Reduction of Area 70% 76% 65% 10%
Impact (17.0") 110ft/lbs 240ft/lbs -- --
Hardness 87RB 80RB 86RB 58RC (min.)

Stainless Steel Balls Information Page


Stock Availability

    Available
Stock Sizes
Roundness
Dia. Tol/Ball
Basic Dia.
Tolerance
Surface
Finish
Material Ball Grade Inches Inches Inches Micro Inch
316 50V 1/8 - 3/4" .000050 ±.001 5
316 100V 7/8 - 1 7/8" .0001 ±.002 8
S.S. 440C 25 1/8 - 1.0" .000025 ±.001 1.5
Carp 20C 50V 1/8 - 5/8" .000050 ±.001 5
Carp 20C 100V 3/4 - 1 7/8" .0001 ±.002 8

Types of Stainless Steel Balls

Stainless Steel Balls Information Page


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