How to Choose the Right VCI Anti-Rust Products

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 VCI (Vapor Corrosion Inhibitor) film is a polyethylene packaging material made by blending VCI masterbatch with PE masterbatch through blow molding. It is used for rust prevention during packaging, storage, and transportation of ferrous and non-ferrous metals.

This guide helps you choose the right VCI product based on your metal type and application.

The film releases VCI particles that adhere to the metal surface, blocking moisture and oxygen. This stops rust without oil or degreasing. 

Different metals react differently to VCI products. Below is the recommended VCI solution for each metal type.

Steel / Cast Iron
Recommended Product: VCI Bag or VCI Roll
Note: General purpose. Rust protection up to 2+ years.

Stainless Steel
Recommended Product: Standard VCI Bag
Note: Suitable for most storage and shipping needs.

Copper / Brass
Recommended Product: Specialized VCI Film
Note: Standard VCI may cause tarnish. Use copper-specific VCI.

Aluminum
Recommended Product: Standard VCI Bag
Note: Aluminum is stable. Standard VCI provides effective protection.

Gold / Silver / Semiconductors
Recommended Product: Specialized VCI Film
Note: Must use specialized VCI for precious metals.

Electroplated Metals
Recommended Product: Standard or Specialized VCI
Note: Depends on the base metal. For zinc-plated parts, refer to steel.

Mixed Metals (Steel + Copper + Aluminum in one package)
Recommended Product: Multi-metal VCI
Note: One solution for assemblies containing different metals.

Quick Tip: If you are protecting mixed metals in one package, choose Multi-metal VCI to avoid any risk of tarnish or incompatibility.

 Your application determines the thickness and form of VCI product you need.

Auto Parts Export / Sea Freight
Recommended Product: VCI Bag or VCI Roll
Recommended Thickness: 0.08 – 0.12 mm
Why: Long shipping time, humid environment. Needs higher strength and longer protection.

Electronics Storage / Precision Parts
Recommended Product: VCI Paper or VCI Bag
Recommended Thickness: 0.06 – 0.08 mm
Why: Oil-free, dust-free requirement. Transparent for easy inspection.

Heavy Machinery Long-term Storage
Recommended Product: VCI Roll (large sheet)
Recommended Thickness: 0.10 – 0.20 mm
Why: Large size, high toughness needed. Consider auxiliary agents for oversized items.

Bearings / Hand Tools / Power Tools
Recommended Product: VCI Flat Bag or M-shaped Bag
Recommended Thickness: 0.06 – 0.10 mm
Why: Standard packaging. M-shaped bag fits irregular shapes.

In-process Storage (between production steps)
Recommended Product: VCI Paper
Recommended Thickness: 0.06 – 0.08 mm
Why: Lightweight, easy to apply between layers.

Military / Aerospace Components
Recommended Product: Specialized VCI Film or VCI Bag
Recommended Thickness: 0.08 – 0.15 mm
Why: High-value parts require reliable, long-term protection.

Quick Tip: For sea freight, always choose the thicker range (0.10 – 0.12 mm) to ensure protection against condensation and humidity during long voyages.

 Step 1 – Identify your metal type
(Steel? Copper? Mixed metals? Check Section 3)

Step 2 – Identify your application scenario
(Sea freight? Long-term storage? Precision parts? Check Section 4)

Step 3 – Match product form and thickness
Combine the recommendations from Section 3 and Section 4

Step 4 – Contact us for a sample test
Still not sure? WhatsApp us directly. We can help you choose and send a sample.

•  Product Forms: Sheet, roll, flat bag, M-shaped bag, gusseted bag
• Standard Roll: 1.5m × 2 layers × 100m/roll (custom sizes available)
• Width: 8 – 200 cm (customizable)
• Thickness: 0.06 – 0.20 mm (customizable)
• Colors: Green, pink, yellow, blue, colorless (custom colors available)

•  Long-term protection: Rust protection period of up to 2+ years
• Complete coverage: VCI particles penetrate into every corner of the package
• No oil, no degreasing: Eliminates brushing and degreasing processes, keeping the work environment clean
• Transparent: Allows direct observation of product condition
• Cost-effective and eco-friendly: Saves labor and time, non-toxic

1.  Products must be sealed during packaging
2. Products must be clean and rust-free before packaging
3. Wear gloves when packaging — avoid direct hand contact with parts
4. Consider whether the product has undergone any other chemical treatment before packaging
5. Do not exceed 60°C during packaging
6. Avoid outdoor operations, direct sunlight, moisture, rain, and foggy conditions
7. For oversized items, add auxiliary agents
8. Seal and store unused VCI film promptly

 General VCI Film:
Steel, cast iron, cadmium and alloys, stainless steel, electroplated metals, chromium and alloys, tin and alloys, zinc alloys, nickel alloys

Specialized VCI Film:
Gold, silver, copper, aluminum, semiconductors, and other metals

Store sealed in a dry, cool place away from chemicals and direct sunlight. 

 Q: Is VCI film better than VCI paper?
A: For most industrial applications, yes. VCI film offers stronger physical protection against moisture and punctures, making it ideal for sea freight and long-term storage. VCI paper is better for flat surfaces and in-process protection.

Q: What is VCI paper?
A: VCI paper is a kraft paper impregnated with VCI chemicals. It is lightweight, breathable, and works well for wrapping flat metal sheets or placing between layers of stacked parts.

Q: What color is VCI film?
A: VCI film is typically available in green, pink, yellow, blue, or colorless. Colorless film is transparent and allows easy inspection of the parts inside.

Q: How does VCI paper work?
A: VCI paper releases anti-rust vapor that condenses on metal surfaces, forming an invisible protective layer. It works best in enclosed or layered packaging.

Q: What is the difference between ferrous and non-ferrous VCI film?
A: Ferrous VCI film is designed for iron and steel. Non-ferrous VCI film is formulated for metals like copper, brass, aluminum, and their alloys. Using the wrong type may cause discoloration on non-ferrous metals.

 Still unsure about which VCI product is best suited for your metal parts? Contact us for a free consultation, and we can also send you a sample to test.

📞 WhatsApp: +86 13651179135
📧 Email: sales@confidentcraft.com

Sample supported. 50pcs start. Fast shipping worldwide.