Tinplate Sheet Products

Specification

Introduction

Features

Process

Product Introduction

Steel tinplate is commonly known as electroplated tin sheet steel, the English abbreviation is SPTE. It refers to a cold rolled, low carbon steel sheet or strip coated with commercial pure tin on both sides.
The main function of this coating is to prevent corrosion and rust, which combines the strength and formability of steel with the corrosion resistance, solder and beautiful appearance of tin. It has the characteristics of corrosion resistance, non-toxic, high strength and good ductility.

Annealing: BA (Batch Annealed), CA (Continuously Annealed)

Standard: EN10202, JIS G3303, ASTM A623/ A624/ A625/ A626

Temper: T1, T2, T2.5, T3, T3.5, T4, T5, DR7, DR8, DR8M, DR9, DR9M, DR10

Coating for ETP:

Equally coated (1.1/1.1, 2.0/2.0/ 2.8/2.8/ 5.6/5.6, 8.4/8.4, 11.2/ 11.2)

Differentially coated (2.0/1.1, 2.8/1.1, 5.6/1.1, 5.6/2.8, 8.4/2.8, 8.4/5.6, 11.2/2.8, 11.2/5.6, 11.2/8.4, 15.1/5.6)

Coating for TFS: Metal Chromium Layer: 50-150mg/m²^，Chromium Oxide Layer:5-35 mg/m²

Shape: Sheet or coil

Sample: Available

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Advantageous Features

Durability and stability

First of all, tinplate sheet has excellent hardness and strength. Compared to pure iron, its hardness and strength are increased, making it an ideal material for the manufacture of mechanical parts and tools. Whether it needs to withstand high pressure or high friction occasions, it can show good durability and stability.

Excellent corrosion resistance

Second, the steel has excellent corrosion resistance. Its surface is specially treated and is usually plated with commercial pure tin on both sides, forming an effective anti-corrosion layer that greatly enhances its corrosion resistance. This allows it to maintain long stability and service life in the manufacture of chemical reactors and catalysts that require prolonged exposure to corrosive substances.

Good magnetic properties

In addition, tin plate steel also has good magnetic properties. Because it contains a certain amount of carbon, it exhibits high magnetism, making it ideal for manufacturing electromagnetic devices such as magnets and motors. This characteristic makes it widely used in the electronic and electrical industry.

Great flexibility

In terms of processing performance, it also performs well. It is easy to process into a variety of shapes, whether it is stamping, cutting or welding, it can be easily completed. This gives it great flexibility in the manufacture of various complex mechanical parts and structures.

Low melting point

At the same time, its melting point is relatively low, which makes it easy to melt and cast into various shapes. This characteristic makes it have a wide application prospect in the casting industry.

Production Process Flow

The production process of steel tinplate is complex and meticulous. It requires strict control of the quality and technical parameters at each stage to ensure the quality and performance of the final product.

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Steelmaking

BOS/EAF → Continuous Casting (Slab)

Hot Rolling

Slab reheated → Rolled to 1.8-3.0mm thickness → Coiled

Pickling

Removal of scale with HCl/H₂SO₄

Cold Rolling

Reduction to final thickness (0.14-0.49mm)

Annealing

Batch (BA) or Continuous (CA) annealing for recrystallization

Temper Rolling

Skin-pass (0.5-3% reduction) for surface finish and mechanical properties

Electrolytic Tinning

Cleaning → Pickling → Fluxing
Electroplating in acidic stannous sulfate bath (Ferrostan process)
Reflow melting (for bright finish) or non-reflow (matt finish)
Chemical passivation
Oiling

Inspection & Slitting

Automated surface scanning → Slitting to width → Coiling

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Thickness(mm)	Width(in.)	Length(in.)	Kg/piece
0.242	14	20	0.343
0.242	20	28	0.686
0.285	14	22	0.404
0.285	20	28	0.809
0.320	18 3/4	18 3/4	0.425
0.320	10	28	0.851
0.350	20	20	0.355
0.228	20	28	0.647
0.257	20	28	0.729
0.271	20	28	0.768
0.305	20	28	0.865
0.311	20	28	0.882
0.319	20	28	0.905

TinPlate

Product Introduction

Production Process Flow

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