Alimentary Can ETP Tinplate Food Can JIS G3303 BA T3 2.8/2.8 Tin Coated Coils

Alimentary Can ETP Tinplate Food Can JIS G3303 BA T3 2.8/2.8 Tin Coated Coils

1. Introduction

Tinplate: commonly known as tinplate, has good sealing, preservation, light resistance, robustness, corrosion resistance, non-toxic and has a unique metal decorative charm, is widely used in food packaging industry such as cans, beverages, military, instruments, electrical appliances and other industries. Among them, in the field of packaging, it belongs to the international common packaging varieties. Tin plating is also one of the important consumption areas of tin, accounting for 30% of all consumption (2010 data). 

Tin mill products include electrolytic tinplate, and electrolytic chromium coated steel (also referred to as tin free steel or TFS), and Black Plate. Tinplate is a thin steel sheet coated by tin, while TFS is an electrolytic chrome plated steel consisting of a thin layer of chromium and a layer of chromium oxide deposited on the steel base. The coating gives both of them a beautiful, metallic luster as well as excellent properties in corrosion resistance and paintability.

2. Features of ETP Products

The characteristics of the tin plate are largely determined by the characteristics of the tin.

• Tin is a silver-white metal with a light blue color, atomic weight 118.7, specific gravity 7.28, melting point 2320C in the atmosphere does not change color, chemical properties are also very stable. The tin plate can keep the metallic luster of the tin for a long time.
• Tin is a soft metal, so when tin plates are processed to make cans, the tin layer will not crack and fall off.
• Tin compounds are non-toxic, and when a small amount of tin is dissolved in food, it has no adverse effects on the color, taste, nutritional value of food and human health.
• Tin has good brazing properties, so the steel plate is easy to solder after tin plating, and it is easy to process when tin plates are used to make cans and other containers.
• The shape of the tin plate is smooth and bright like a mirror, and it is easy to paint and print.

3.  Mechanical Properties of DR Tin Mill Products

Details of the Tinplate Sheet Coil

1. Reference standards: GB/T 2520-2000, JIS G3303-2002 and DIN EN 10203-1991
2. Raw materials: MR and SPCC
3.Thickness: 0.18 to 0.50mm
4. Width: 260 to 972mm
5. Coil diameter: ID 420mm or 508mm
6. Temper grade: T2, T3 and T4
7. Tin coating: ordinary 2.8 or 2.8g and 5.6g or 5.6g, we can produce tinplate sheet coil according to customer's requests
8. Applications: paint, chemical, battery, electric cable and other industries
9. Package: anti-rust paper, with corner protection. Sheets or coils can be customized

Standard for Temper

Note: We provide Batch Annealing (BA) tinplate for customers.

Surface Finish of Tinplate

Coating Weight

4. Surface appearance

It is determined by the surface appearance of the steel base and whether the tin coating is soft melted.

• Bright surface (B) : The original plate with a smooth surface with a very fine millstone pattern is coated with tin, and then the tin layer is soft melted to obtain a bright surface. 

• Rough surface (R) : The original plate with a certain directional grinding stone pattern surface is plated with tin, and then the tin layer is soft melted to obtain a shiny surface.

• Silver surface (S) : The original plate with a rough and dull surface is tinned, and then the tin layer is soft melted to obtain a glossy surface.

• Matte surface (M) : The matte surface is tinned on the original plate with a generally matte surface and then is not softenable.

5. Usage Precautions for ETP

• As ETP is covered by soft metallic tin coatings, due precautions should be taken not to cause scratches by rough handling or vibration during transportation.
• Paintability, printability, solderability, and mechanical properties of ETP tend to 收deteriorate as time elapses after production. Use as soon as possible after delivery.
• Although ETP has excellent corrosion resistance, it tends to rust in a humid atmosphere. Use as soon as possible after unpacking.
• Tin is dissolved by a strongly alkaline solution. When using ETP for making cans for alkaline contents, paint the internal surface.
• As contents that contain sulfur cause blackening of the ETP surface, paint the internal surface.

6. EQUIPMENT & PRODUCTION LINES

Passivation types

• Sodium dichromate cathodic treatment (CE) or 311 process.
• Sodium bichromate impregnation (CP) or 300 process.

7. TINPLATE COILS

8. APPLICATIONS 

Modern industrial tinplate is usually a cold-rolled, low carbon sheet coated with commercial pure tin on both sides, which combines the strength and formability of steel with the corrosion resistance, weldability and appearance of tin. Tinplate is widely used in the food industry and a variety of containers, stamped products, packaging materials for non-food industry, such as food cans, spray cans, bottle caps, gas containing beverage cans, packaging materials and non-packaging materials (home appliances, toys, stationery, engineering).

Particularly suitable for use in the packaging industry, tinplate can also be applied in the following areas.
In the home: cake tins, gas canister components, etc
In the fast food restaurant: coffee tins, cola tins, etc
Electrical and electronic equipment: batteries, electrical components, etc
Automotive components: cylinder head gaskets, oil filters, etc
Building trade: false ceiling rails, space bars for double glazing, light reflectors, radiator fins, reinforced tape, etc

9. Packing and Marking

Offers coils and sheets, coil packed in a vertical form or a horizontal.

A label that indicates the manufacturing history is affixed to the outside of the packaging. In addition, a service card is contained inside.

With regard to types of packing and markings, please consult us.