Drum cold rolled steel sheets ThicknessFlatness RollingDirectionCrosswise Total 4%max. 3mm Superior...
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Transcript of Drum cold rolled steel sheets ThicknessFlatness RollingDirectionCrosswise Total 4%max. 3mm Superior...
Drum cold rolled steel sheets
Thickness Flatness
Rolling Direction Crosswise
Total 4% max. 3mm
• Superior uniform hardness and tensile strength
• Excellent Paintability : very clean and optimal
surface finish [Ra : 0.7∼1.8 ㎛ ]
• Excellent flatness and thickness tolerance
Characteristics
Drum cold rolled steel sheets
Mechanical Properties
Hardness(HrB)
EL min.(%)
T.S(kg/mm2)
Hardness(HrB)
EL min.(%)
T.S(kg/mm2)
28and over
Standard Specification
36 37∼and over
65and under
37and over
37and over
40 55∼(aiming45 50)∼
45 60∼(aiming50 55)∼
28and over
28and over
Dongbu
Top&Bottom
Body
Class
※ 1.2mm thickness basis
Drum cold rolled steel sheets
Oiling Conditions
Oil Type Oil Amount(both side)
DOS Type 40 140mg/m∼ 2
Anti-Rust Type 0.8 4g/m∼ 2