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Aluminium strip for lamp cap
Product Description
GBS lamp cap stock combines strength and high formability with high resistance to softening in vitriting. Manufactured at
modern
and well-equipped mills, it can be rolled to very fine tolerances, allowing more caps per tonne of coil and enabling uninterrupted
operations of high-speed forming presses.
2. specification:
Dimensions | ||||
Parameter | Stock for bulb caps | Stock for Tube caps | ||
Range | Tolerance | Range | Tolerance | |
Thickness (mm) | 0.25 — 0.40 | +/-0.02 | 0.30 — 0.40 | +/-0.02 |
Width (mm) | 50 — 500 | +/-0.30 | 50 — 500 | +/-0.30 |
Coil I.D (mm) | without core 203 | - | without core 203 | - |
Coil density (kg/mm) | 1.80 max | - | 1.8 max | - |
3. mechnical properties
Mechanical properties | |||||
Type | Alloy (AA) | Temper | UTS (mpa) | %E (min) (50 mm gauge length) | |
Min | Max | ||||
Stock for bulb caps | |||||
3004 | O | 150 | 200 | 13 | |
5251 | O | 165 | 210 | 13 | |
Stock for tube caps | 8011 | H14 | 125 | 160 | 1 |
H16 | 150 | 180 | 1 |
4. chemical composition
Chemical composition | ||||
Alloy (%) | Stock for bulb caps | Stock for tube caps | ||
3104 | AA 3004 | AA 5251 | AA 8011 | |
Fe | 0.70 | 0.70 | 0.50 | 0.60 — 1.00 |
Si | 0.30 | 0.30 | 0.40 | 0.50 — 0.90 |
Mg | 1.20 — 1.60 | 0.80 — 1.30 | 1.80 — 2.40 | 0.05 |
Mn | 0.80 — 1.30 | 1.00 — 1.50 | 0.10 — 0.50 | 0.20 |
Cu | 0.10 | 0.25 | 0.15 | 0.10 |
Zn | 0.25 | 0.25 | 0.15 | 0.10 |
Ti | - | - | 0.15 | 0.08 |
Cr | 0.25 | - | 0.15 | 0.05 |
Each (Others) | 0.05 | 0.05 | 0.05 | 0.05 |
Total (Others) | - | 0.15 | 0.15 | 0.15 |
Al | Remainder | Remainder | Remainder | Remainder |
5. Surface quality
Surface has a corrosion resistant oil coating.
6. Applicable standards
ASTM - B - 209M, Aluminium association — aluminium standards and data
7. Packing
Lamp cap stock is placed on wooden skids in an eye-to-wall position. It is wrapped in HDPE fabric and hardboard and strapped with hoop iron. Moisture protection is ensured with silica gel packets and the entire packed product is placed in a wooden box.