Product Name: Stellite 20 Cobalt Alloy Valve Balls Cobalt Valve Ball and Seat Model NO.: EB9102 Type: Ball Material: Cobalt Pressure: High Pressure Temperature: High Temperature Surface Treatment: Polishing Certification: ISO Performance: Wear, Corrosin and Thermal Resistance Surface Finish: Mirror Cast Process: Investment Cast, metallurgic Powder Dimension: Customer's Drawings Trademark: EB Transport Package: Plywood Case Specification: Stellite 20 Origin: China Product Description 1.Product Name:Valve Balls and Seats2.Material Grade:API V11-2253.Size:Balls φ28.58mm,V11-225Seat4.Hardness:G100 HRC 52-605.Process:Cast Process6.Standard:TypeFluid, mm2Dw, mmD, mmd mmH, mmV11-10610715.875020.14211.6812.70V11-12515319.050023.31713.9712.70V11-15022723.812529.66717.0212.70V11-17534528.575035.25520.9612.70V11-22556934.925043.68826.9212.70V11-25086942.862551.05433.2712.70V11-375162357.150078.02945.4719,057.Chemical Composition:Composition (%)CSiMnCrNiSPMoWFeCoStellite 20(Balls)2.30-2.65≤1.0≤1.031.0-34.0≤2.5≤0.04≤0.04≤1.016.0-18.0≤2.5Bal.CoCr Alloy(Seats)2.20-2.50≤1.0≤1.029.0-34.0≤3.0≤0.04≤0.04≤1.011.0-14.0≤2.5Bal.8.Standard Cobalt Alloy (Stellite):CCrSiWFeMoNiMnCoHardnessStellite12.5029.501.2012.503.001.003.001.00Bal53.0Stellite32.4031.001.0012.503.00-3.001.00Bal54.0Stellite40.9032.001.0013.501.000.500.500.50Bal48.0Stellite61.2029.001.204.503.001.003.001.00Bal43.0Stellite121.4529.002.008.503.001.003.001.00Bal47.0Stellite202.4532.501.0017.003.001.003.000.50Bal54.0Stellite210.2527.001.000.152.005.502.501.00Bal20.0Stellite310.5025.501.000.152.005.502.501.00Bal33.0Stellite1903.2026.001.0014.005.001.003.001.00Bal58.0Stellite7061.2030.001.20-2.005.002.001.00Bal42.0Stellite7122.0029.002.00-2.008.502.002.00Bal50.0Tribaloy 4000.088.502.60-1.5028.501.50-Bal53.0Tribaloy8000.0818.003.40-1.5028.501.50-Bal55.0StelliteF1.7525.501.10-1.150.6022.500.30Bal40.0