surface-finish-comparison

VDI 3400 Surface VS Yick Sang Texture Comparison Chart

VDI Raum Yick Sang Texture Ra Minimum Draft Angle Recommended Draft  Angle
0 0.10 YS20037 0.56 0.2 0-0.2
3 0.15 YS20037 0.56 0.2 0.1-0.2
6 0.20 YS20037 0.56 0.2 0.1-0.2
9 0.30 YS20037 0.56 0.2 0.1-0.2
12 0.40 YS20037 0.56 0.2 0.15-0.2
15 0.55 YS20037 0.56 0.2 0.2
18 0.80 YS20039 0.92 0.3 0.3
21 1.10 YS20040 1.09 0.5 0.5
24 1.60 YS20002 2.14 1.5 1-1.5
27 2.20 YS20002 2.14 1.5 1.5
30 3.20 YS20046 3.26 2 2
33 4.50 YS20007 4.50 3 3
36 6.30 YS20070 6.28 3 3
39 9.00 YS20069 9.17 5 5
42 12.50 YS20028 11.94 6 6
45 18.00 10 10

Why draft angle injection molding

  • Reduces the chance of damage to the part due to friction during release
  • Reduces wear and tear and chances of damage to the mold
  • Ensures a uniform, smooth, unscratched finish when required
  • Ensures the integrity and uniformity of other surface finishes and textures
  • Reduces overall cooling time by lessening or eliminating the need for unconventional ejection setups
  • Most, if not all, of these benefits offer either direct or indirect overall production cost reductions