Chinese Grade | Equal to ISO Category Number | chemical composition | Physical mechanical properties | Application |
WC | Co | Density | Bend Strength | Hardness | |
% | % | g/Cm3 | N/mm2 | HRA | |
YG3 | K01 | 96.5-97 | 3 | 14.9-15.3 | ≥1180 | ≥91.0 | It is suitable for the finishing of cast iron, non-ferrous metals,
alloys and non-metallic materials, and semi-finishing vehicles for
intermittent cutting. |
YG6X | K10 | 93.5 | 6 | 14.8-15.1 | ≥1420 | ≥92 | Finishing of chilled hard alloy cast iron and heat resistant alloy
steel and ordinary cast iron |
YG6 | K20 | 94 | 6 | 14.7-15.1 | ≥1600 | ≥91 | Cast iron, non-ferrous metals and alloys, non-metallic materials,
medium to cutting, semi-finishing and finishing. |
YG8 | K20-K30 | 92 | 8 | 14.5-14.9 | ≥1600 | ≥90 | Suitable for casting of cast iron, non-ferrous metals and their
alloys and non-metallic materials. |
YG10 | K40 | 90 | 10 | 14.3-14.7 | ≥1900 | ≥89 | It is used for large batch production and has excellent strength
and toughness. |
YG15 | K30 | 85 | 15 | 13.9-14.2 | ≥2100 | ≥87 | Forging, perforating and stamping tools for steel bars and steel
tubes with high compression ratios and working under large stresses |
YG20 | K30 | 80 | 20 | 13.4-13.7 | ≥2500 | ≥85.5 | Stamping die, stamping watch parts, musical instrument spring
piece; |
YG30 | | 70 | 30 | 12.75 | ≥2500 | ≥82.8 | High toughness |