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AISI Type 440-C Stainless Steel
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Material Analysis
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Carbon
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0.86 to 1.20%
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Chromium
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16.0 to 18.0%
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Manganese
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1% Max.
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Silicon
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1% Max.
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Phosphorus
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0.025% Max.
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Sulphur
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0.025% Max.
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Nickel
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0.75% Max.
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Molybdenum
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0.40 to 0.65%
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Copper
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0.5% Max.
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Mechanical Properties
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Tensile strength
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285,000 psi
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Yield strength
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approx. 275,000 psi
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Elongation in 2"
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2%
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Reduction in area
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10%
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Modulus of elasticity
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29,000,000 psi
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Density
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0.277 lbs/cu. in.
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Hardness
Type 440C stainless steel balls have uniform hardness of 58-65, as measured on the parallel flats using Rockwell C scale, regardless of size or grade.
Applicability
Type 440C stainless steel balls and rollers offer maximum uniform hardness and good corrosion resistance. Suited to valve and bearing applications, they are resistant to fresh water, crude oil, gasoline, alcohol and food stuffs.
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