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Tin plate

T-2.5 0.35~0.45X700~900 T-3 0.18~0.22X800~840 T-3 0.35~0.45X800~900 T-4 0.26~0.30X700~1050 0.31~0.35X800~1030

[Classification of Tinplate] 
Surface finish status

Finished productSignClassificationFeatures
Single rollingBBright surfaceGlazed surface obtained after melting treatment of electrotinned smooth raw material strip with extremely fine rubstone figures by processing.
RRough surfaceGlazed surface obtained after melting treatment of electrotinned raw material strip featuring certain oriented rubstone figures.
SSilver surfaceGlazed surface obtained after melting treatment of electrotinned raw material strip with rough matt surface.
MMatt surfaceMatt surface of general matt raw material strip without tin melting treatment.


Temper designation

TypeRockwell hardness guarantee values (HR30T)
Type of steelTemper designationWay of annealing
MR, L, D***T-2.5CA55��3
T-357��3
T-461��3
T-565��3


Note: 1. The quality of each temper class of the single cold-reduced tinplate cannot essentially be evaluated only by single mechanical characteristic, however, Rockwell hardness, T scale shall be adopted, since this is one of the most useful mechanical characteristics.
2. DI material used for two-piece can, shall be supplied in coils, and its designation is as follows: DTÐ2.5CA DI, DTÐ3CA DI, DTÐ4CA DI.

*** MR: It contains few residual minor constituents and has a good corrosion resistance so that it is widely used for such applications as containers.
L: It contains particularly few residual minor constituents such as Cu, Ni, Cr, Mo, so that it is suitable for the materials of containers required improved corrosion resistance.
D: It is aluminum killed steel, so that it is suitable for the applications which bear deep drawing or other working that is liable to produce LuderÕs lines pattern.

Tin coating weight

ClassificationDesignation of tin coating weightNominal tin coating weight (g/m2)Min. average tin coating weight (g/m2)
Equal tin coating
(E)
2.8/2.82.8/2.84.9
5.6/5.65.6/5.610.5
8.4/8.48.4/8.415.7
11.2/11.211.2/11.220.2
Differential tin coating
(D or A)
5.6/2.85.6/2.85.05/2.25
8.4/2.88.4/2.87.85/2.25
8.4/5.68.4/5.67.85/5.05
11.2/2.811.2/2.810.1/2.25
11.2/5.611.2/5.610.1/5.05
11.2/8.411.2/8.410.1/7.85
15.1/5.615.1/5.613.9/5.05
DI only1.8/2.81.8/2.81.5/2.25


Standard supply specification

Temper designationNominal thicknessNominal widthNominal length
(Steel sheet)
T-2.5>0.22~0.26700~1050500~1168
>0.26~0.35700~1200
>0.35~0.55>900~1200
T-30.18~0.22700~800
>0.22~0.26700~1050
>0.26~0.35700~1200
>0.35~0.55>900~1050
T-40.18~0.22700~1050
>0.22~0.26700~1200
T-0.18~0.22700~1050
>0.22~0.26700~1200


Extended Supply Specification

T-2.50.35~0.45X700~900
T-30.18~0.22X800~840
T-30.35~0.45X800~900
T-40.26~0.30X700~1050
0.31~0.35X800~1030




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