... Abrasion Resistant, Corrosion Resistant. Standard Punch. Misumi coil spring Material60Si2MnA,60Si2CrA,60Si2CrV,etcWire diameter5mm~80mmFree hight10mm~1188mmhardness42HRC~52HRCDirection ... Load)ApplicationExcavator, digger machine, car, train, shakeout machine,Steel Plants,Railway Bogies & Wagons,,etc.Painting and Coating Amino ... where possibleOur EquipmentOur certificateOur customers misumi coil spring