| Reqular Polyester | Silicon Polyester | Anti-Pollution | Hi-Polymer Polyester | Multi-Purpose Resin | PVC Laminated Steel Sheet | SuperGalum Color | P.V.D.F | Sun Dura |
Embossing Color | Green Board Color | Anti-Static Color | Anti-Bacteria | Aluminum Color |
Product Introduction
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Prepainted steel sheet is coated and baked with paint containing silicon resin. |
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It is a popular construction material because of its highly weather resistant properties. |
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Countries, including Korea, that have industrial complexes along their coastal regions will find it more economical to use steel plates coated with Si-P/E paint than PE paint. |
- Sandwich panel
- Steel plate for roof in factory complex
Cross section of painted product
Note 1) Materials used for prepainted steel sheet: GI, GA, EGI, SGL, AL, BP, TFS, TP, SUS, ALCOT etc.
Note 2) 2COAT 2BAKING is available for coating layer on both the top and back sides.
Applied materials
Hot-dip galvanized steel sheet (KS D 3506, GI)
The cold rolled steel sheet passes through a molten zinc pot containing 97% zinc (0.03% or less AL), undergoing the galvanizing process, which gives each side of the sheet and equal thickness of coating.
Surface types for hot-dip galvanized steel sheet (GI)
While an increased volume of coating enhances the anti-corrosion properties of galvanized steel sheet, the workability is inevitably decreased. Anti-corrosion properties, workability, tension, and elongation must be taken into consideration when selecting plates.
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1) |
The normal wall thickness of galvanized steel plates refers to the thickness of pre-coated steel plates. The clearance of the machine, therefore, must account for the thickness of the zinc plating indicated in Table 1 as well as the coating thickness (usually 25μ). |
| 2) |
Zinc flacks may stick inside the metallic pattern during the deep drawing process, requiring extra caution be taken as this may damage the coating's exterior |
| 3) |
Lubrication oil used in treatment shall not contain chlorine or phosphoric acid, which reacts to zinc. Table 1 shows the zinc weight and coating thickness for hot-dip galvanized steel sheet used for prepainted steel sheet. These figures are adopted by KS (Korean Standards), JIS (Japan Industrial Standards), and ASTM (American Society for Testing Materials). |
Table 1 - Weight and thickness of zinc coating
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Zinc Coating WeightSymbol |
Z 06 | Z 08 | Z 13 | Z 12 | Z 18 | Z 20 | Z 22 | Z 26 | Z 27 |
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Zinc Coating Thickness(㎜) |
0.013 | 0.017 | 0.021 | 0.026 | 0.034 | 0.040 | 0.043 | 0.049 | 0.054 |
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Weightg/㎡(both side) |
90 | 120 | 125 | 183 | 244 | 285 | 305 | 345 | 381 |
| ASTM A 525 | G-30 | G-40 | G-60 | G-90 | G-115 |
Electrolytic galvanized steel sheet (KS D 3528, EGI)
The surface of the cold rolled steel sheet (KS D 3512) undergoes a dull finishing treatment, followed by a double-sided coating process (zinc weight: 13g~25g/㎡). Five products are available depending on the coating weight. Electro galvanized iron (EGI) is usually used in home electrical appliances that require extensive workability. Due to its low zinc weight, EGI cannot be used for products that require anti-corrosion properties.
Aluminum steel sheet (KS D 6701)
While aluminum is light in specific gravity, it possesses high tensile strength. Due to its superb anti-corrosion properties, aluminum is widely used in the production of aircrafts, automobiles, containers, blinds, ceiling material, and composite panels.
Cold rolled stainless steel sheet (KS D 3698)
Due to its anti-corrosion and chemical resistant properties that far exceed other steel products, stainless steel sheet is optimum for products that require extremely high levels of corrosion resistance and durability.
Stainless steel sheet takes is produced from Iron/Chrome or Nickel/Chrome alloy. STS 304 or STS 430 are used mainly for PCM (JIS uses the symbol SUS).
| Raw Materials | Size | Related specification | Characteristics | |
| Thickness | Width | |||
| COLOR-ROLLED STEEL (CR) | 0.25~1.6t | 600~1380㎜ | ASTM A-366 KS D 3512 JIS G 3141 |
Excellent formability Excellent weldability Excellent surface Bright surface |
| HOT-DIP GALVANIZED STEEL(GI) | 0.25~1.6t | 600~1380㎜ | ASTM A-526 KS D 3506 JIS G 3302 |
Corrosion resistance |
| ELECTROLYTIC GALVANIZED STEEL (EGI) | 0.35~1.6t | 600~1380㎜ | ASTM A-591 KS D 3528 JIS G 3313 |
Excellent formability |
| GALVANNEALED STEEL(GA) | 0.35~1.6t | 600~1380㎜ | ASTM A-526 KS D 3506 JIS G 3302 |
Good weldability Corrosion resistance |
| HOT-DIP ALUMINIZED STEEL(AL-COT) |
0.35~1.6t | 600~1380㎜ | ASTM A-463 KS D 3544 JIS G 3314 |
Heat resistance Corrosion resistance Heat reflectiveness |
| BLACK PLATE (BP) | 0.25~0.6t | 600~1380㎜ | ASTM A-623 KS D 3516 JIS G 3303 |
Excellent lackerability Excellent workability Heat resistance |
| ALUMINUM STEEL (AL) | 0.3~1.6t | 600~1380㎜ | ASTM B-209 KS D 6701 JIS G 4000 |
Corrosion resistance High durability |
| STAINLESS STEEL(STS) | 0.3~1.6t | 600~1380㎜ | ASTM A-895 KS D 3698 JIS G 4305 |
Corrosion resistance High durability Chemical resistance |
| SuperGalum (SGL) |
0.3~1.6t | 600~1380㎜ | ASTM A-792 KS D 3770 EN 10215 |
Heat Resistance Corrosion Resistance Heat Reflectiveness High Durability |
Size availability
Test items
| Test item | Test method | Test result | Related specification |
| Cross cut test |
100/100 TAPING TEST |
Good | KS D 3520 |
| Pencil hardness test | 45˚, 1H and over | Good | KS D 3520 |
| Bending test | 180˚×3T | Good | KS D 3520 |
| Impact test | 500g×12.7㎜φ×500㎜H | Good | KS D 3520 |
| Salt water spray test | 5%Nacl 35˚ | 750hours Good |
KS D 9520 JIS Z 2371 |
| Resistance to chemicals | 5%H₂SO₄×5Hr 5%NaOH×5Hr |
Good Good |
DS-B-I-1112 |
| Accelerated weathering test |
Weather-O-Meter | 1300hours Good |
JIS Z 0230 |
| Film hardness test | M.E.K Rubbing | 40Times Good |
DS-B-I-1112 |
※ Test standards can be altered according to cutting thickness and color.
Applied specifications
KS D 3520, KS D 6711
JIS G 3312, JIS G 3321
ASTM A 653, ASTM A 792
EN 10142, EN 10147
