Grade Recommended for Carbide mirco porous drawing dies

Grade Hardness Bending Strength Compression Strength Density Application Recommended
HRA N/mm² N/mm² g/cm³
ZZBT-10 ≥93.5 ≥3800 ≥8600 14.8-15.0 To draw diameter of less than 0.3mm for the steel wire,tungsten wire,molybdenum wire and other harder materials high-speed drawing,and high surface finish requirements and overall high performance wire drawing.

Size for Carbide mirco porous drawing dies
Type Reference dimension
D H d L2 L3 L4 2r R
ZZBT-M060412 6 4 0.1-0.5 6°-12° 0.5-0.9 <=0.1 <=0.7 90 2
ZZBT-M090612 9 6 0.1-1.0 6°-18° 1.0-1.5 0.15-0.75 1.2 90 3.0-4.5
ZZBT-M100812 10 8 0.1-1.0 12°-18° 3.5-4.0 0.2-1.7 1.4 90 4.5-6.0


size allowable deviation Dimension (mm) Tolerance (mm)
Bore 0.8-0.25 -0.05/0
0.26-0.30 -0.10/0
0.50-1.0 -0.15/0
Diameter <=10 -0.15/+0.15
Height <=10° -0.15/+0.15
Angles <=18° -1°/+1°

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