HARDNESS
440A stainless steel hardness is measured on parallel flats.
 

302/316 MATERIAL ANALYSIS        302                               316  
Carbon………………………………………Maximum of 0.15% …………… Maximum of 0.08%
Manganese……………………………… Maximum of 2.00% …………… Maximum of 2.00%
Phosphorus……………………………… Maximum of 0.045% ……………Maximum of 0.045%
Sulfur……………………………………… Maximum of 0.030% …………… Maximum of 0.030%
Silicon……………………………………… Maximum of 1.00% …………… Maximum of 1.00%
Chromium……………………………… 17.00 to 19.00% ………………… 16.00 to 18.00%
Nickel……………………………………… 8.00 to 10.00% ………………… 10.00 to 14.00%
Nitrogen…………………………………… Maximum of 0.10% …………… Maximum of 0.10%
Molybdenum…………………………… ……………………………………………… 2.00 to 3.00%

Note: Trace elements not shown

302/316 MATERIAL CONVERSION – Stainless Steel

302/316 MECHANICAL PROPERTIES         302                                   316
Tensile strength…………………………………… 100,000 to 180,000 psi ……………90,000 psi
Yield strength……………………………………… 50,000 to 150,000 psi ………………45,000 psi
Elongation in two inches……………………… 55 to 60% …………………………………35%
Reduction in area………………………………… 55 to 65 % ………………………………60%
Modulus of elasticity…………………………… 29,000,000 psi …………………………28,000,000 psi
Density………………………………………………… 0.286 lb./cu. in …………………………0.290 lb./cu. in.
Note: All stainless steel balls are passivated.