Cold Rolled Steel PlateCold rolled steel plates are renowned for their excellent surface quality, high dimensional accuracy, and superior mechanical properties. Understanding their size specifications and tolerances is crucial for applications in automotive manufacturing, appliance production, and precision engineering where exact dimensions are critical.
Standard Size Ranges
Cold rolled steel plates typically come in standardized dimensions that balance manufacturing efficiency with application needs:
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Thickness: Ranges from 0.5mm to 3.0mm, with special applications sometimes requiring thinner or thicker gauges
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Width: Generally between 600mm and 2000mm, with custom widths available for specialized requirements
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Length: Typically from 2000mm to 6000mm, optimized for manufacturing and transportation efficiency
Width Tolerances
The allowable deviation in width varies according to both nominal width and thickness, as specified in the table below:
| Thickness (mm) | Width Deviation Ranges by Nominal Width (mm) | |||
|---|---|---|---|---|
| ≤125 | >125-250 | >250-400 | >400 | |
| 0.20-0.40 | +0.3 | +0.6 | +1.0 | +1.5 |
| >0.40-1.0 | +0.5 | +0.8 | +1.2 | +1.5 |
| >1.0-1.8 | +0.7 | +1.0 | +1.5 | +2.0 |
| >1.8-3.0 | +1.0 | +1.3 | +1.7 | +2.0 |
Length Tolerances
Cold rolled steel plates maintain strict length control with allowable deviations of:
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+10mm for nominal lengths ≤2000mm
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+15mm for nominal lengths >2000mm
Flatness and Shape Requirements
The surface flatness and shape characteristics are critical quality parameters for cold rolled steel:
Flatness Standards:
| Nominal Width (mm) | Flatness Requirements by Thickness (mm/m) | ||
|---|---|---|---|
| ≤0.70 | >0.70-1.50 | >1.50-5.0 | |
| ≤1000 | 10 | 8 | 6 |
| >1000-1500 | 12 | 10 | 8 |
| >1500-2000 | 18 | 15 | 12 |
Additional Shape Requirements:
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Sickle Bend: Measured within every 2-meter section
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Same Plate Difference: Must not exceed half the thickness tolerance
Quality Advantages
The cold rolling process delivers significant advantages over hot-rolled alternatives:
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Superior Surface Finish: Excellent for painting, plating, and other surface treatments
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Enhanced Dimensional Accuracy: Tighter tolerances for precision manufacturing
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Improved Mechanical Properties: Better strength, hardness, and surface uniformity
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Consistent Performance: Reliable material characteristics for critical applications
These dimensional standards ensure cold rolled steel plates meet the rigorous requirements of modern manufacturing while maintaining the material’s renowned surface quality and performance characteristics that make it ideal for visible components and precision parts.
