Quick Access to Professional VDI 3400 Finish Grades:
VDI 3400 Standard: High-Precision VDI Finish, Surface Texture & Grain Solutions
Plaque & Scale Specifications
A: Metal VDI Texture Plaque (200×85×5mm) – Full VDI 3400 standard scale by EDM/Laser (GF-AgieCharmilles).
B: Plastic VDI Surface Plaque (200×145×3.5mm) – Ideal for PP/ABS via EDM, VDI grain etching, or sandblasting.
C: Metal & Plastic VDI Finish Scale (130×30×4mm) – Portable VDI 3400 scale reference.
D: Plastic VDI Plaque (200×145×3.5mm) – Specially designed for transparent materials via EDM/Laser/Etching/Sandblasting.
E: Plastic SPI Scale (200×145×3.5mm) – SPI Finish standard for PP/ABS/PC materials.
F: Steel Plate SPI Set (25×48mm) – Professional SPI finish standard (Complete 12 pcs set).
Professional Application Guides for VDI Grades
- ✨ VDI 12 & VDI 15: The ultimate “Silk-Touch” finish. Perfect for high-precision medical and optoelectronic parts.
- ✨ VDI 18 & VDI 21: Low friction surface, ensuring smooth mold release for thin-walled plastic injection.
- ✨ VDI 24 & VDI 27: The industry “Golden Standard” for consumer electronics, providing a premium matte look.
- ✨ VDI 30 & VDI 33: Robust texture for automotive interiors and durable housing, resisting scratches effectively.
- ✨ VDI 36 & VDI 39: Distinctive technical grain for heavy-duty tools and professional equipment cases.
- ✨ VDI 42 & VDI 45: Maximum grip “Diamond Grain” for high-friction industrial handles and anti-slip surfaces.
VDI 3400 Finish Technical Chart (VDI 12 to VDI 45)
| VDI Grade (Standard) | Ra (µm) | VDI Grade (Standard) | Ra (µm) |
|---|---|---|---|
| VDI 12 | 0.40 | VDI 30 | 3.15 |
| VDI 15 | 0.56 | VDI 33 | 4.50 |
| VDI 18 | 0.80 | VDI 36 | 6.30 |
| VDI 21 | 1.12 | VDI 39 | 9.00 |
| VDI 24 | 1.60 | VDI 42 | 12.5 |
| VDI 27 | 2.24 | VDI 45 | 18.0 |
Download Technical Resource
Get our comprehensive VDI 3400 Texture Chart as a portable PDF reference for your engineering team.
Expert Insights: Why VDI 3400 Matters in Mold Etching
VDI 3400, established by the Verein Deutscher Ingenieure (VDI), is the global benchmark for VDI surface quality. Beyond EDM machining, we achieve precise VDI grain using high-end 5-axis laser technology at our Laser Center (moldtexture.net).
VDI 3400 Surface Finish FAQs
Q: What is the equivalent of VDI 24 in Ra?
A: VDI 24 corresponds to an Ra value of 1.60 µm according to the VDI 3400 standard.
Q: Can VDI 3400 be achieved by laser?
A: Yes, our GF AgieCharmilles 5-axis laser machines can perfectly simulate textures for VDI 12 to VDI 45 while maintaining higher precision.
Q: Besides laser processing, what other processes can achieve VDI3400? What are the differences in grain surface effects?
A: other processes making by EDM or Sandblasting or Etching on mold cavity surface to be achieved. Like laser, EDM processing a uniform but glossy finish, while sandblasting and etching result in a matte finish. Product designers generally prefer a matte finish because it makes plastic products appear more high-end and sophisticated.
Q: Which processes are preferred by product and mold engineers?
A: Currently, the most popular mold surface treatments are sandblasting and etching, because textured surfaces are the easiest to repair after impacts, and the finished product has the best touch feel and appearance after assembly.
Looking for a reliable mold texture supplier in China? We specialize in VDI 3400 finish and VDI surface texture for automotive, medical, and electronic industries.