One Film. Four Metals. Zero Corrosion.
Most VCI films on the market are designed for a single metal type — usually steel. If you need to protect copper, you need a different film. Brass? Another one. This creates inventory complexity, increases costs, and introduces the risk of using the wrong film on the wrong part.
BENZ VCI films are different. They’re multi-metal VCI films — a single film that simultaneously protects steel, cast iron, copper, and brass from corrosion. This isn’t just a marketing claim; it’s verified by BFSV Germany in Test Report No. 7499/11 under the BMW TL 8135-0043 specification.
Why Multi-Metal Protection Matters
Modern manufacturing doesn’t deal with single-metal assemblies. A typical automotive component kit might include:
- Steel engine brackets and housings
- Cast iron cylinder blocks and flywheel housings
- Copper electrical connectors and heat exchangers
- Brass fittings, bushings, and valve components
When all four metal types sit in the same shipping container wrapped in different VCI materials, the chemical interaction between different VCI formulations can actually accelerate corrosion on some metals while protecting others. A multi-metal VCI film eliminates this risk entirely.
BFSV Test Results: Multi-Metal Performance
| Metal Type | Corrosion Protection | Test Standard |
|---|
| Steel (DC04) | Grade 3 — Good ? | TL 8135-0043 Appendix A |
| Cast Iron | Protected ? | Climate cycling test |
| Copper | Protected ? | Multi-metal assessment |
| Brass | Protected ? | Multi-metal assessment |
Source: BFSV Test Report No. 7499/11, BFSV Hamburg, Germany
The Science Behind Multi-Metal VCI
BENZ VCI films use PROPATECH VCI technology from Propagroup, Italy — a proprietary blend of volatile corrosion inhibitors that vaporize inside sealed packaging and selectively adsorb onto different metal surfaces. The VCI molecules form a self-assembling monolayer (SAM) on each metal type, creating a barrier against oxygen and moisture — the two primary causes of corrosion.
Industries That Benefit Most from Multi-Metal VCI
- Automotive — Mixed-metal component kits (engine + electrical + hydraulic parts)
- Heavy engineering — Construction equipment with steel, iron, and brass components
- Electronics — PCB assemblies with copper traces and steel enclosures
- Aerospace — Mixed-alloy precision parts requiring single-wrap protection
BENZ Packaging — multi-metal VCI films certified by BMW, VW, Daimler, GM, Volvo, and Renault-Nissan. Get multi-metal VCI films ?
*Multi-metal protection verified under BFSV Test Report No. 7499/11. BENZ manufactures using PROPATECH VCI technology from Propagroup S.p.A., Italy.