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 | |
---|---|---|---|---|---|---|---|---|---|---|
Each | Total | |||||||||
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 | ||
---|---|---|---|---|---|---|---|---|
Over | Up to | Min | Max | Min | Min | 180o | ||
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.