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Characteristics

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faith-hull
17 diapositives · 396 Views · Nov 30, 2014

Cold Rolled Steel. Characteristics. High quality products manufactured by the computer integrated system at Asan Bay Works Uniform thickness, wider width, and hardness and tensile strength Smooth surface, and uniform flatness Superior workability. Fender. Trunk lid Outer. Floor.

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  1. Cold Rolled Steel Characteristics • High quality products manufactured by the • computer integrated system at Asan Bay Works • Uniform thickness, wider width, and hardness • and tensile strength • Smooth surface, and uniform flatness • Superior workability

  2. Fender Trunk lid Outer Floor Members Fuel Tank Cold Rolled Steel Application • Cold rolled steel that Dongbu Steel provides is the • optimal product for using in automobile parts as roofs, • fenders, hoods, panels, oil fans, etc.

  3. Class Standard Specification Dongbu T.S (kg/mm2) EL min.(%) T.S (kg/mm2) Hardness (HrB) Hardness (HrB) EL min.(%) Commercial Quality 28 and over 32∼38 and over 28 and over 32∼38 50 and under 28 and over 34∼40 and over 28 and over 34 49 and under Drawing Quality Deep Drawing Quality 28 and over 36∼42 and over 47 and under 28 and over 36∼44 Non-Aging DDQ 36∼42 and over 28 and over 28 and over 47 and under 43∼47 Cold Rolled Steel Mechanical Properties

  4. Class Standard Specification Dongbu T.S (kg/mm2) EL min.(%) Hardness (HrB) T.S (kg/mm2) EL min.(%) Hardness (HrB) High- Strength DQ 35kg/R 35 and over 34 and over 35 and over 34 and over 40kg/R 40 and over 30 and over 40 and over 30 and over DDQ 35kg/E 35 and over 34 and over 35 and over 34 and over 40kg/E 40 and over 30 and over 40 and over 30 and over Cold Rolled Steel Mechanical Properties ※ Specifications of high tensile strength steel shall be subject to agreement between manufacturer and purchaser.

  5. Cold Rolled Steel Mechanical Properties • Specification

  6. Cold Rolled Steel Size Availability (mm)

  7. Galvanized Products [Galvanized & Galvannealed] Characteristics • Specialty products manufactured by computer • integrated system • Excellent flatness achieved by using PLTCM’s • base metal • Excellent adhesion of Fe-Zn coating • Induction heating GA furnace • - Uniform iron contents on the alloyed surface • - Improvement of powdering resistance • → Excellent corrosion resistance, weldability, and paintability

  8. Galvanized Products [Galvanized & Galvannealed] Application Automotive Engine Heat protector

  9. Class Standard Specification Dongbu T.S (kg/mm2) Y.P (kg/mm2) EL (%) T.S (kg/mm2) Y.P (kg/mm2) EL (%) Hardness (HrB) Commercial Quality - - - 36∼42 26∼32 34∼42 55∼65 Drawing Quality min 28 max 22 min 41 28∼34 18∼22 41∼46 40∼50 Deep Drawing Quality min 28 max 18 min 43 28∼32 15∼18 43∼48 38∼48 Non-Aging DDQ min 28 max 17 min 45 28∼32 13∼17 45∼50 38∼48 High- Strength 35kg/R min 35 min 20 min 36 35∼38 20∼24 36∼42 56∼64 40kg/R min 40 min 23 min 30 40∼44 23∼27 34∼40 60∼68 Galvanized Products [Galvanized & Galvannealed] Mechanical Properties ※ Specifications of high tensile strength steel shall be subject to agreement between manufacturer and purchaser.

  10. Galvanized Products [Galvanized & Galvannealed] Mechanical Properties • Specification

  11. Galvanized Products [Galvanized & Galvannealed] Size availability DQ / DDQ / EDDQ CQ ※ Please contact our representative for more information on 2.3mm thickness of galvanized steel sheets.

  12. ALCOT [Hot-Dip Aluminium Coated Steel] Characteristics • Excellent heat resistance • Surface appearance after heat treatment ALCOT GALVANIZED STEEL COLD ROLLED STEEL ※ Test Condition : At 450℃×24Hours In Air

  13. ALCOT [Hot-Dip Aluminium Coated Steel] Characteristics • Corrosion resistance • Corrosion rate with PH changes in solution ※ The corrosion resistance of ALCOT is excellent due to the coating characteristics to form a thin stable aluminum oxide layer.

  14. ALCOT [Hot-Dip Aluminium Coated Steel] Application Automotive Exhaust system

  15. Class Standard Specification Dongbu T.S min. (kg/mm2) Y.P (kg/mm2) EL min. (%) T.S min. (kg/mm2) Y.P (kg/mm2) EL min. (%) Commercial Quality 28 21 min - 28 21 min - Drawing Quality DQ1 28 26 max 34∼38 28 26 max 34∼38 DQ2 28 24 max 36∼40 28 24 max 36∼40 DQ3 28 21 max 38∼42 28 21 max 38∼42 EDDQ 26 19 max 40∼44 26 19 max 40∼44 ALCOT [Hot-Dip Aluminium Coated Steel] Mechanical Properties ※ Specifications of high tensile strength steel shall be subject to agreement between manufacturer and purchaser.

  16. ALCOT [Hot-Dip Aluminium Coated Steel] • Specification • Scope of Manufacturing Field