Stainless Steel Disc, Stainless Steel, 304, Disc, Outside Diameter 4 in, Outside Diameter Tolerance +0.015 in/0 in, 5 in Overall Length, Length Tolerance +/-0.125 in, Fabrication Hot Rolled, Heat Treatment Annealed, Heat Treatable Heat Treatable, Mechanical Finish Mill, Yield Strength 30,000 psi, Tensile Strength 75,000 psi, 215 BHN Brinell Hardness, 96 HRB Rockwell Hardness, Includes Material Certificate No Certificates Included, Standards ASME SA182, ASME SA479, ASTM A182, ASTM A276, ASTM A479