Graddau Dur

Math o Ddur Prydain Fawr ASTM (SAE) JIS
Dur Carbon Dur Alloy Isel Q235, Q345, Q195, Q215 A285MGr.B A570MGr.A SS330 SS400 SS490
Dur Carbon o Safon 10, 20, 35, 40, 60, 20Mn, 25Mn, 35Mn, 40Mn 1010, 1020, 1035, 1045, 1060, 1022, 1026, 1037, 1039 S10C, S20C, S35C, S45C…
Dur Strwythurol Alloy 20Mn2, 40Mn2, 20Cr, 40Cr, 20CrMo, 20CrMnTi, 20Cr2Ni4, 40CrNiMo 1320, 1345, 5120, 5140, 4118, 4135, 4140, 3316, 4340 SMn420, SMn438, SCr420, Scr440, SCM430, SCM435, SCM440, SCN 815, SNCM439
Dur Pennawd Oer ML10, ML20, ML30, ML35, ML35CrMo, ML42CrMo, ML15MnB 1012, 1020, 1030, 1034, 4135, 4140, 1518 SWRCH10R, SWRCH20K, SWARCH35K, SNB7
Dur y Gwanwyn 65Mn, 60Si2Mn, 50CrVA 1066, 6150 SCP6, SCP10
Gan gadw dur GCr15 E52100 SUJ2
Dur Di-staen 1Cr13, 2Cr13 412, 420 SUS410, SUS 420
Dur Offer T8, T10, W6Mo5Cr4V2 W1A-8 , W1A-9.5 , M2 SK7, SK4, SKH9
Dur Torri Y12, Y12Pb, Y15, Y15Pb, Y40Mn 1212, 11L08, 1215, 12L13, 12L14, 1141 SUM21, SUM32, SUM22L, SUM42