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Carbide grade

 

6 to 12 micron large grain grade

Grades G1/K20 G2/K30 G3/K40 G4/K50 G5/K60 G6/K70
% Tungstène 92-93,5 87-90 83-85 80 74-78 72-75
%Cobalt 6-7 9-12 15 20 20-25 25-26
vickers HV50 1500-1600 1300-1400 1150-1250 950-1100 850-1000 800-850
Bending N/mm² 2100-2500 2400/2900 2500-3300 2800-3200 2800-3400 2700-3400
Compression N/mm² 5500-6000 5000/5200 4000-4200 3600-3900 3300-3500 3100-3300

 

1 to 4 micron fine to medium grain grade

Grades K01 K05 K10 K15 K20 K30
% Tungstène 92-96 90-94 91-93 93,5 92-94 88
%Cobalt 3-5 4-6 5-6 6 6-7 10
vickers HV50 1700-1900 1700-1800 1600-1800 1700 1300-1550 1350-1450
Bending N/mm² 1800-2200 1600-2000 1700-2200 1850 2000/2150 2200-2700
Compression N/mm² 6600-6800 5800/6300 6000/6200 6100 5500/6300 5200-5500

< 1micron micro-grain grade

Grades K01 K05 K10 K20 K30
% Tungstène 96-97 94-97 94-95 90-93 88-92
%Cobalt 3-4 3-6 5-6 7-10 8-12
vickers HV50 1900-2000 1850-2050 1850 1650-1800 1500-1700
Bending N/mm² 2000-2200 2000-3000 2200-3300 3100-4000 2900-3700
Compression N/mm² 6500-6800 6200-6400 6300-6400 6000-6300 5800-6000