Double Reduced Cold-Rolled Tinplate Steel

OVERVIEW

Definition and Application of Double Reduced Cold-Rolled Tinplate Steel

Double Reduced Cold-Rolled Tinplate Steel, which can be called "double cold-rolled electrolytic tinplate" in Chinese, is a tin-plated steel plate that has been processed by a special cold rolling process. During its production process, it needs to go through two cold rolling processes to obtain a thinner thickness and better surface quality. It is widely used in food packaging, electronic components, medical devices and other fields with high requirements for material performance.


Product Parameters

Product Name

Double Reduced Cold-Rolled Tinplate

Thickness

0.18mm-0.50mm

Width

260mm-980mm

Length

Support Customization

Tin Coating

General: 2.8g or 5.6g, can be produced according to your needs

Substrate Type

MR / SPCC / L / D

Reference Standard

GB/T 2520, JIS G3303, JIS G3315, DIN EN 10202, DIN EN 10203


Surface State of Tinplate

Surface State

Features

Light Surface

Electroplated tin smooth raw material strip after melting 

treatment to obtain the glaze,Smooth surface with very fine grindstone pattern

Stonetextured Surface

Electroplating tin raw material with the glaze obtained 

after melting treatment,Grindstone pattern with certain direction

Silvercolor Surface

Electroplating tin raw material with the glazed surface 

obtained after melting treatment, the surface is rough and dull

Mattless Surface

The surface of the substrate is rough and dull, 

and the tin plating layer is not soft melting


Substrate Type

Substrate Type

Introduction

MR

The most general steel, steelmaking impurity residue less, 

excellent mechanical properties and corrosion resistance

L

Used for the production of acidic contents (oranges, yellow peaches, pineapples, etc.), 

and the inner surface of the food cans for iron high corrosion resistance tinplate substrate steel, 

such tinplate is often calledKPlate

D

Used to produce two pieces of high-processing tin plate substrate steel, 

such tin plate is often called.DIMaterial

SPCC

Chinese characteristics, using ordinary hot rollingSPHCProduces, 

usually used for miscellaneous tank purposes.


Coating Weight

Classification

Representation of 

Tin Coating Weight

Tin Plating Nominal 

Weight (g/m2)

Minimum Average 

Tin Plating Weight (g/m2)

Equal Tin 

Plating (E)

1.1/1.1

1.1/1.1

1.8

2.2/2.2

2.2/2.2

4.0

2.8/2.8

2.8/2.8

5.0

5.6/5.6

5.6/5.6

10.5

Differentiated Tin Plating (D/A)

2.2/1.1

2.2/1.1

2.0/0.9

2.8/1.1

2.8/1.1

2.25/0.9

5.6/1.1

5.6/1.1

5.05/0.9

2.8/2.2

2.8/2.2

2.25/2.0

5.6/2.2

5.6/2.2

5.05/2.0

5.6/2.8

5.6/2.8

5.05/2.25


Chemical Composition

No.

C

Si

Mn

S

P

Cu

Ni

Cr

Mo

D

0.12

0.03

0.6

0.05

0.02

0.2

0.15

0.1

0.05

L

0.13

0.03

0.6

0.05

0.15

0.03

0.04

0.06

0.05

MR

0.13

0.03

0.6

0.05

0.2

0.2

0.2

0.1

0.05


Mechanical Properties & Applications

Standard Name

Nominal Hardness HR30TS

Strong Yield MPA

Scope of Application

T-1

49

230 /-50

Drawing requirements, drawn ironing cans, 

nozzles, nozzles, closures

T-2

53

245 /-50

Ring and plug, dome, closure, 

shallow pull and special tank parts

T-2.5

55

260 /-50

Battery cell, small can cover and body

T-3

57

275 /-50

Cans and cans, large diameter caps, 

crown caps

T-3.5

59

290 /-50

Can body, closure and crown lid

T-4

61

340 /-50

Can body, closure and crown lid

T-5

65

480 /-50

Cans and cans

Production process characteristics of Double Reduced Cold-Rolled Tinplate steel

1. Secondary cold rolling process: Through double cold reduction, the thickness of the steel plate is further reduced to improve the hardness, strength and surface finish of the material to meet the needs of precision processing

2. Electrolytic tin plating: Electrolytic tin plating is carried out after cold rolling to form a uniform tin coating, enhance the corrosion resistance and welding performance of the steel, and improve the surface aesthetics


International Standard Specifications for Double Reduced Cold-Rolled Tinplate Steel

The International Organization for Standardization (ISO) has formulated a series of standards for double cold-rolled electrolytic tinplate to ensure the consistency and reliability of material quality:

ISO 4977-1:1984 EN: specifies the size, surface quality, coating thickness and mechanical properties of the sheet

ISO 4977-2:1988 EN: Standardize the specifications of coils, including coil size, chemical composition, surface quality, etc., suitable for subsequent cutting into sheets


Key technical parameters of Double Reduced Cold-Rolled Tinplate steel

1. Mechanical properties: must meet the tensile strength, elongation and other indicators specified in the standard to ensure formability during processing.

2. Plating requirements: The tin layer thickness is uniform, the adhesion is strong, and there is no pinhole or shedding phenomenon to ensure corrosion resistance.

3. Dimension tolerance: The thickness, width and length deviation of the plate and coil must be controlled within a very small range to meet the needs of high-precision manufacturing

PRODUCT DISPLAY


CERTIFICATE

PACKING

CUSTOMER FEEDBACK

FAQ

Q:Can you send samples? 
A:Of course, we can send samples to all parts of the world, our samples are free, but customers need to bear the courier costs. 
Q:What product information do I need to provide? 
A:You need to provide the grade, width, thickness, coating and the number of tons you need to purchase. 
Q:About product prices? 
A:Prices vary from period to period due to cyclical changes in the price of raw materials. 
Q:What are the certifications for your products? 
A:We have ISO 9001, SGS, EWC and other certifications. 
Q:How long does your delivery time take? 
A:In general, our delivery time is within 7-45 days, and may be delayed if the demand is extremely large or special circumstances occur. 
Q:Can I go to your factory to visit? 
A:Of course, we welcome customers from all over the world to visit our factory. 
Q:Does the product have quality inspection before loading? 
A:Of course, all our products are strictly tested for quality before packaging, and unqualified products will be destroyed. 
Q:How to pack the products? 
A:The inner layer has a waterproof paper outer layer with iron packaging and is fixed with a fumigation wooden pallet. It can effectively protect products from corrosion during ocean transportation. 

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