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Conventional Grade Facts

Grade ISO Grade Density g/cm3 Hardness HRA> T.R.S>N/mm² Performances or recommended applications
Conventional grades
YG3 K05 15.20-15.40 91.5 1400 Medium grain, for finishing machining of cast iron and non-ferrous metals
YG3X K05 15.20-15.40 92.0 1300 Fine grain, for finishing machining of cast iron and non-ferrous metals
YG4C   15.05-15.25 90 1620 Coarse grain, for percussion drill bits and mining inserts
YG6 K20 14.85-15.05 90.5 1860 Medium grain, for rough machining of non-ferrous metals
YG6A K10 14.85-15.05 92.0 1600 Fine grain, for drawing dies and woodworking tools
YG6X K10 14.85-15.05 91.7 1800 Fine grain, for cutting of non-ferrous metals
YG7 K20 14.65-14.85 90.0 1900 Medium grain with good wear-resistance and good impact- resistance
YG8 K30 14.60-14.85 89.7 2060 Medium grain, for drawing dies
YG8A K30 14.6-14.85 90.0 2000 Medium grain, for the drawing dies and wood-working
YG8X K30 14.60-14.85 90.5 2000 Fine grain, high hardness and oxidation resistance at high temperatures and good impact toughness
YG8C   14.55-14.75 88.0 2160 Coarse grain, for button drill bits and the mining inserts
YG10 K40 14.25-14.55 88.0 2160 Medium grain, for machining gray cast iron with a low hardness
YG11 K40 14.30-14.50 87.5 2260 Medium grain, for wear parts and mining tools
YG11C   14.20-14.40 87 2260 Coarse grain, for mining inserts
YG12 K40 14.10-14.40 87 2260 Medium grain, for rough machining of non-ferrous metals
YG15   13.95-14.15 86.5 2400 Medium grain, for mining tools, cold heading and punching dies
YG20   13.45-13.65 84.0 2480 Medium grain, for non-standard dies and moulds, cold heading and punching dies
YG20C   13.40-13.60 82.5 2480 Coarse grain, for die and moulds making screws of a diameter of ∮20-∮50mm
YG22   13.15-13.55 83.0 2480 Medium grain, for non-standard dies and moulds, cold heading and punching dies