3004 3105 Aluminum Cap Strip Foil

Nov 01, 2021

3004-O aluminum alloy strip for lamp cap
3105 aluminum sheet for screw cap

To make aluminum lamp cap, first stamping and then tapping into spiral shape, thinner materials and to withstand the pressure. Therefore, the 3004 lamp cap aluminum strip need to be with high mechanical strength and uniform microstructure and deep drawing property. Currently aluminum use the flat ingot hot rolling for producing blank holder with 3004-O aluminum alloy strip. To make this 3004 O aluminum alloy strip, we have to control the composition of the material and cast rolling process, the high temperature uniformity of annealing and final annealing process, it have good deep drawing quality, enough strength, good formability.
Compare with 8011 closure sheet, 3105 aluminum sheet has enough strength, so it is stronger enough to bear the gas pressure, so it is widely used for making screw cap for gas liquid bottle, such as soda water and carbonated wine.

3004 Chemical Composition
Alloy	Si	Fe	Cu	Mn	Mg	Cr	Ni	Zn	Ti	Other		Aluminum
										Each	Total
3004	0.3	0.7	0.25	1.0-1.5	0.8-1.3	-	-	0.25	-	0.05	0.15	Remainder

Temper	Thickness mm	Tensile Strength Rm MPa		Yield Strength Rp0.2 MPa		Elongation % A50mm	Bend Radius		Hardness HBWa
		min.	max.	min.	max.		180°	90°
O	0.2-0.3	155	200	60		13	0t	0t	45

3105 Chemical Composition
Alloy	Si	Fe	Cu	Mn	Mg	Cr	Ni	Zn	Ti	Other		Aluminum
										Each	Total
3105	0.6	0.7	0.3	0.3-0.8	0.2-0.8	0.2	-	0.4	0.1	0.05	0.15	Remainder

Temper	Thickness mm	Tensile Strength Rm MPa		Yield Strength Rp0.2 MPa		Elongation % A50mm	Bend Radius		Hardness HBWa
		min.	max.	min.	max.		180°	90°
H12	0.2-0.3	130	180	105		3	1.5t		41
H14	0.2-0.3	150	200	130		2	2.5t		48
H16	0.2-0.3	175	225	160		1			56