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Specialty Metals
Gilsonite
Electrolytic Tin Plate / Tin Free Steel
PRODUCT INTRODUCTION
Our tin plate (TP) products are made by coating tin using electrolysis on the surface of thin cold-rolled steel sheet (black plates), with a thickness of 0.14~0.6 mm. Its shiny surface finish, superb corrosion resistance and formability make tin plates an ideal choice for the food industry and industrial parts producers. Our tin free steel sheet (ECCS), which we also produce using our new "2-step" method is widely accepted as a more economical substitute for the tin coated steel. Our TP/TFS products are widely used in the production of 3-piece and 2-piece (D&I, DRD) cans as well as can lids and bottoms. Our products serve a variety of purposes, including material for steel EOE, toys, and electronic parts.
Product features
Tin Plate (TP): In addition to its elegant shining surface, tin plates possess superb corrosion resistance, formability, weldability, and printability. Such unique properties allow the tin plates to be used in a broad range of applications including beverage cans, food cans, oil cans, paint cans, aerosol cans, bottle caps, cable and/or electronic parts.
Tin Free Steel (TFS): Lower in price than tin plates, tin free steel boasts superior lacquer and paint adhesion and strong resistance against corrosion. Tin free steel is used in the production of cans, containers, electric equipments parts, home appliances and cables.
APPLICATIONS
Categorized by application
Type Application
Food can Food can beverage can canned fish including mackerel and tuna. Fruit juice including white peach and yellow peach, Sports drinks, coffe drinks, carbonated beverages, health drinks, etc.
General can 4L cans
18L cans
PIL cnas
Aerosol cans
Automobile gasoline cans, machine oil cans, etc.
Industrial containers for paint and oil
Industrial containers for paint and oil
Cosmetics, butane gas, pesticide, pharmaceuticals, other
Crown cap Bottle caps Bottle caps for beer, soju, beverages
Others electronic JAR
electronic parts
Other
Rice cookers
TVs, tuna, battery cell body, toys, stationery,
plates, medicine case, cookie container etc.
Classification by can production method
Category Type Features Application
3-PIECE CAN Soldered cans
Welded cans
Jointed cans
Jointed cans with one-side coating weight of 5.6g/㎡ or more
TP, SUN-KEL, HI-TIN used
TFS-CT (SUN-CRO) used
Food cans, cans for other purposes
2-PIECE CAN drawing can
DRD can
DI can
TP, AL used
TFS, AL used
TP, AL used
Fish
Tuna
Beverage cans
3- piece can: cans consisting of top, body, and bottom.
2- piece cans: cans where the body and bottom are one piece
SPECIAL APPLICATIONS
DR-TP & TFS
DR, which is the base material for making DR.-TP. and DR-TFS, is produced by re-rolling, using the double cold reduction (DCR) process (10~45%) after annealing. Higher levels of rigidity and strength of the DR-TP/TFS than general SR enable the thinner DR-TP/TFS to display an identical level of durability to the SR. Can producers seeking less weight and cost effective material heavily favor DR-TP/TFS.
Ultra-thin TFS
TFS is a favored choice for makers of steel-copolymer tapes because of the high heat tolerance and superior formability of the extra-thin gauge (0.15 mm thickness). While mainly used as material for optical cables, it has recently experienced a remarkable growth rate of 30% due to the explosive use of cellular phones and high-speed communications networks built nation-wide.
Extra Wide TP/TFS
Answering the demand of can production companies for enhanced productivity, steelmakers with advanced technology including Dongbu Steel, have started producing extra-wide tin plates and tin free steel plates (TP/TFS). The new ETL at the Asan Bay Works of Dongbu Steel currently produces tin plates and tin free steel with width measurements up to 1,220.
SIZE AVAILABILITY
Production size availability (Sheets)
  Single reduced Double reduced
Thickness (mm) 0.15 ~ 0.6 0.14 ~ 0.36
Width (mm) 600 ~ 1200 600 ~ 1200
Length (mm) 450 ~ 1206 450 ~ 1206
Production size availability (Coil)
  Single reduced Double reduced
Thickness (mm) 0.15 ~ 0.6 0.14 ~ 0.36
Width (mm) 600 ~ 1200 600 ~ 1200
Inside diameter (mm) 419/508 419/508
Weight (MT) 5 ~ 12 5 ~ 12
PRODUCTION AVAILABILITY
Coating weight (Thin coated)
Type Outside Diameter
Tolerance
Normal Coating Weight Minimum Average Coating
Weight Test Value
KS D 3526
JIS G 3303
ASTM A624 g/㎡ lb/BB g/㎡ lb/BB
Equally coated weights 2.8/2.8 #25 5.6 (2.8/2.8) 0.25 4.9 0.22
5.6/5.6 #50 11.2 (5.6/5.6) 0.50 10.5 0.47
8.4/8.4 #75 16.8 (8.4/8.4) 0.75 15.7 0.70
11.2/11.2 #100 22.4 (11.2 / 11.2) 1.00 20.2 0.90
Differentially coated weights 5.6/2.8 #50/25 5.6/2.8 0.25/0.25 5.05/2.25 0.23/0.10
8.4/2.8 #75/25 8.4/2.8 0.375/0.125 7.85/2.25 0.35/0.10
8.4/5.6 #75/50 8.4/5.6 0.375/0.25 7.85/5.05 0.35/0.23
11.2/2.8 #100/25 11.2/2.8 0.50/0.125 10.1/2.25 0.45/0.10
11.2/5.6 #100/50 11.2/5.6 0.50/0.25 10.1/5.05 0.45/0.23
11.2/8.4 #100/75 11.2/8.4 0.50/0.375 10.1/7.85 0.45/0.35
Coating weight (Chrome plated)
Type Coating weight(mg/㎡)
Metal Chrome (Metal Cr) 30 ~ 140
Chrome Oxide (Cr Oxide) 8 ~ 25
Surface finish
Type JIS symbols ASTM symbols Surface Finish (Aim uRa)
Bright B 7B ~ 0.35
Stone R1 R 7C 0.35 ~ 0.5
Stone R2 0.45 ~ 0.7
Silver S 5C 0.8 ~ 5.5
Surface classfications
  Features
MR It contains few residual minor constituents and has good corrosion resistance, so 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 requiring improved corrosion resistance.
D It is alumium killed steel, so that it is suitable for the applications, that requir deep drawing, or other working that is liable to produce a Luder’s lines pattern.
Temper grades
Temper grades Aim Rockwell Hardness (HR30T) Application
T-1 49±3 Used for cans requiring a high level of workability.
T-2 53±3 Used for applications requiring an average level of workability: oval cans
T-2.5 55±3 Used in cans, T-2 for drawing and T-3 for stiffness
T-3 57±3 Used in body/end of large size cans (18 L)
T-4 61±3 Used in body/end of cans and crowns requiring relatively high durability
T-5 65±3 Used in body/end of cans requiring a high level of buckle resistance.
T-6 70±3 Body/end of large size beer cans
DR-8 73±3 Carbonated beverage cans, food cans (tuna cans)
DR-9 76±3 Carbonated beverage can
CROSS SECTION OF PAINTED PRODUCT
TP
TFS
PACKING AND MARKING
Packing
Dongbu Steel tin plate is packed with special care to endure handling and transportation for a prolonged period of time. Special care is given to prevent abrasion, rust and scratches. A single package unit contains 1,000 to 1,800 sheets.
Marking
Each package is marked with the product name, specifications, coating weight, thickness, dimensions, temper, number of sheets contained, net weight, gross weight, lot number, package number, package date, origin, and the "Dongbu Steel Co., Ltd." insignia. Other marks may be added upon request. An inspection card inside the package provides identical information.
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