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

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