Differential Thickness Tinplate Steel Coil

OVERVIEW

Concept and characteristics of unequal thickness tin-plated steel coils

Unequal thickness tin-plated steel coils are tin-plated steel with differences in thickness. The core feature is that the thickness of different areas of the steel coils varies through a specific processing technology, and the surface is covered with a tin layer to improve the anti-corrosion performance. However, the current search results do not directly mention "unequal thickness tin-plated steel coils". However, based on the characteristics of "unequal thickness steel coil processing technology" and "galvanized coils", it can be inferred that this type of steel coil may combine the structural advantages of unequal thickness rolling with the protective properties of the tin coating, and is suitable for scenarios with comprehensive requirements for material strength, formability and corrosion resistance.


Product Parameters

Product Name

Differential Thickness Tinplate Coil

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

Reference for the processing technology of unequal thickness steel coils

Core process steps

Taking hot-dip galvanized unequal thickness steel coils as an example, its processing needs to go through two key links: unequal thickness flexible cold rolling and annealing parameter matching:

1. Use cold rolling mill to perform differential rolling on hot-rolled steel coils to form unequal thickness cold-rolled steel coils of target thickness;

2. Through the coordinated control of annealing temperature, time and rolling ratio, ensure that the steel coil has good cold forming ability, and the final yield strength can reach 417~477MPa, and the elongation is 21~31.7%.


Process advantages

Compared with traditional equal-thickness processing, this process can achieve precise control of material thickness, reduce subsequent processing waste, and replace electro-galvanizing with hot-dip galvanizing to shorten the production process, reduce costs, and meet environmental protection requirements


Potential application directions of unequal-thickness tin-plated steel coils

1. Structural lightweight field: such as automobile body parts, achieve a balance between strength and weight reduction through thickness gradient design;

2. Precision manufacturing field: electronic equipment housing or parts, need to take into account both formability and surface corrosion resistance;

3. Special packaging field: replace traditional equal-thickness tin-plated plates, reduce material consumption and improve packaging structure strength

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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