ALLOY 3105

Alternative Designations : AS 3105; BS 3105 (formerly N31); DIN AIMn0.5Mg0.5; EN AW-3105; JIS A3105P; NF A 3105.

Note : Profiles products are routinely produced to AA specifications, but other National Standards may be met on request.

Chemical Composition :

Si	Fe	Cu	Mn	Mg	Cr	Zn	Ti	Others		Al
Si	Fe	Cu	Mn	Mg	Cr	Zn	Ti	Each	Total	Al
0.60	0.70	0.30	0.30 – 0.80	0.20 – 0.80	0.20	0.40	0.10	0.05	0.15	Reminder

(% max except where a range is given)

Characteristics :

Corrosion Resistance	Very Good
Anodising	Poor
Formability	Very good for soft temper
Machinability	Poor
Weldability	Very good
Brazcability	Good

Typical Uses : General Sheet metal work requiring greater strength than is provided by 1000 series alloys, profiled building sheet (roofing and siding), flashings and ducting; panels, vehicle and caravan panelling some holloware and domestic appliances.

Note : Special grades are available for deep drawing and spinning, general purpos grades should not be used for these operations.

Note : H12-temper designations indicate that a different process has been used to achieve mechanical characteristics similar to those of the corresponding H1-tempers. However, property limits of H2-tempers differ from the above in that the Maximum Tensile Strength and Minimum Yield Strength provisions do not apply. Where required, material supplied in H2-tempers can be produced to meet the mechanical property limits of the equivalent H1-tempers.

Tensile property limits for gauges outside of the indicated range shall be subject to agreement between Profiles and purchaser.

Modulus of Elasticity : 69,000 Mpa

Mechanical Properties (To ASTM B209M Standards)

Standard	Temper	Thickness (mm)		UTS (N/mm²)		Yeild (N/mm²)	Elongation in 50mm (%)	Bend Radius
Standard	Temper	Over	Up to	Min	Max	Min	Min	180^o
ASTM B209M	“O”	0.32	0.63	95	145	35	16	–
		0.63	1.20	95	145	35	19	–
		1.20	2.00	95	145	35	20	–
BS EN485-2		0.20	0.50	100	155	40	14	0t
		0.50	1.50	100	155	40	15	0t
		1.50	3.00	100	155	40	17	0.5t
ASTM B209M	H12	0.40	0.63	130	180	105	1	–
		0.63	1.20	130	180	105	2	–
		1.20	2.00	130	180	105	3	1.5t
BS EN485-2		0.20	0.50	130	180	105	3	1.5t
		0.50	1.50	100	130	180	4	1.5t
		1.50	3.00	130	180	105	4	1.5t
ASTM B209M	H14	0.32	1.20	150	200	125	1	–
		0.63	1.20	150	200	125	2	–
		1.20	2.00	150	200	125	2	–
BS EN485-2		0.20	0.50	150	200	130	2	2.5t
		0.50	1.50	150	200	130	2	2.5t
		1.50	3.00	150	200	130	2	2.5t
ASTM B209M	H16	0.32	0.63	170	220	145	1	–
		0.63	1.20	170	220	145	1	–
		1.20	2.00	170	220	145	2	–
BS EN485-2		0.20	0.50	175	225	160	1	–
		0.20	2.00	175	225	160	2	–
		0.50	3.00	175	225	160	2	–
ASTM B209M	H18	0.32	0.63	190	–	165	1	–
		0.63	1.20	190	–	165	2	–
		1.20	2.00	190	–	165	2	–
BS EN485-2		0.20	0.50	195	–	180	1	–
		0.50	1.50	195	–	180	1	–
		1.50	3.00	195	–	180	1	–

Welding : 3105 is readily welded by the TIG and MIG processes. Commonly used filler alloys are 4043 and 1100. 4043 gives a greater weld strength, but if the assembly is to be anodized, 1100 filler metal will give a closer color match.

3105 may also be gas welded or resistance welded, but the resulting joints are not as strong or as corrosion resistant as the inert gas welded joints. Moreover, gas welding could result in excessive heat distortion and, in thinner gauges, may burn through. It is essential that all traces of flux used in welding or brazing are removed by scrubbing with hot water upon completion.

Annealing : 345°C ± 5°C, until all parts have reached the annealing temperature.

Weight Calculation : Weight per square meter in kilogrammes: 2.73 x thickness in mm.