aluminium circle 1060 for cookware
YS/T90-2008 (Published by National Development and Reform Commission, March.12, 2008)
- Mechanism Properties
- Tensile Strength: Rm/MPa 90-150
- Yield Strength: Rp0.2/MPa —-
- Elongation A50mm/% ≥25
2. Chemical Composition (%)
Si+Fe≤0.95; Cu:0.05~0.20; Mn≤0.05; Mg –; Cr–; Ni–; Zn≤0.10; Ti–; Zr–
Other Single Impurity≤0.05; Total: ≤0.15 Al≥99.00
- Tolerance
- Edge thickness: ±0.30mm; Width: +15mm/-5mm
- Edge thickness difference: ≤0.06mm
- Intermediate crown: 0-1％
- Adjacent points thickness difference: ≤0.04mm
- The relative transverse thickness difference: ≤0.6％
- Intermediate crown tolerance: ≤0.6％
- Longitudinal thickness tolerance: ≤0.15mm
- Macroscopic Structure
- Crack, impurity, pore and lamination fault are not allowed
- Surface grain fineness≥II
- Appearance
- Heat-treated belt, impurity, pore, cavitation, crack, erosion and Streaky Segregation are not allowed
- Metal or nonmetallic, slight scrape, longitudinal and transverse strip faults are allowed if not impact usage.
- Partial layer-to-layer stagger on the end of strip is allowed if the stagger no more than 5mm (inner 3 circles and outer 1 circle no more than 30mm), side wall evenness should be no more than 15mm.
- Edge disfigurement is not allowed if it impacts usage, processing edge crack is allowed when it’s no more than 8mm (for 1*** series alloy)
- Melt H content
≤0.18mL/100gAl
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