Food Grade Tinplate Standards

Analysis of Safety Material Standards for Food-Grade Tinplate

2 June, 2026 News

Food grade tinplate must meet multiple regulatory frameworks, not just “food-safe.” The EU, FDA, and national standards each set different limits on tin, lead, and coating migration. Buyers who specify “food-grade tinplate” without naming the standard may receive material that fails inspection at the destination port. Here is what the major standards require.

EU Regulation (EC) No 1935/2004

This framework regulation covers all food-contact materials. For tinplate, it requires:

No transfer of constituents to food in amounts that could endanger health.
No unacceptable change in food composition.
No deterioration of food taste or odor.

Furthermore, specific measures limit heavy metals: lead < 0.01 mg/kg, cadmium < 0.005 mg/kg. Tin migration depends on the food type—acidic foods (tomatoes, citrus) dissolve more tin than neutral foods.

FDA 21 CFR for Tinplate

The US FDA regulates tinplate under 21 CFR 175.300 (resinous and polymeric coatings) and 175.105 (adhesives). For the tin layer itself, the FDA does not set a specific tin limit; instead, it requires that coatings be ” Generally Recognized as Safe” (GRAS). However, the internal lacquer must pass extraction testing with food simulants.

food grade tinplate

Key Test Parameters Buyers Should Request

When ordering food-grade tinplate, ask the supplier for test reports on:

Overall migration: total substances released into food simulant (must be <10 mg/dm²).
Tin migration: specifically for acidic foods, typically <200 mg/kg.
Lead and cadmium: heavy metal screening.
Bisphenol A (BPA): many buyers now require BPA-NI (not intentionally added) linings.

Pinholes: The Hidden Safety Risk

Tinplate protects steel because tin covers the surface. However, even microscopic pinholes expose bare steel. In acidic foods, those pinholes rust quickly. Consequently, can makers apply internal lacquer to cover pinholes. The tin layer alone is not sufficient for long-shelf-life acidic products.

Lead-Free Solder and Welding

Old can seams used lead-tin solder. That ended decades ago. Modern food cans use lead-free solder or welded seams. Consequently, buyers should specify “lead-free construction” on the PO, even though it is now standard. Furthermore, welded side seams need a protective coating over the weld area.

Related Food-Grade Substrates We Supply

Beyond tinplate, food and beverage equipment uses other food-contact materials:

C11000 / T2 Copper Plate for food-grade heat exchangers and brewing equipment, where copper is a traditional food-contact metal.
For stainless and nickel alloy food equipment, we supply nickel alloys that resist acidic food contact without leaching.

Specify the Standard on Your PO

A complete food-grade tinplate order reads: “T3, 2.8/2.8 g/m², EU 1935/2004 compliant, BPA-NI internal lacquer, lead-free, migration test certificate enclosed.” Leave out the standard and the supplier ships general-purpose stock.

Get Food-Grade Tinplate Documentation

Tell us your destination market (EU, US, Middle East) and food type (acidic, oily, neutral). We will confirm compliant stock and quote with test documentation.