MATERIALS AND GRADES Material Group No. USER GUIDE USA Germany U.K. France Sweden Italy Spain Japan Russia EURONORM AISI/SAE/ UNS/ ASTM/AA Werkstoff DIN BS AFNOR SS UNI UNE JIS GOST EN A53241IID20%CrMo-LC0.9645;5.5609G-X 260 CrMoNi 20 2 1Grade 3C EN-GJN-HV600(XCr23) A53241IIC15%CrMo-HC0.9635;G-X 300 CrMo 15 3; Grade 3A;0.9640G-X 300 CrMoNi 15 2 1Grade 3B EN-GJN-HV600(XCr14) 524 ISCAR