Dit is een precipitatie hardbare legering, die veelvuldig wordt toegepast in die producten waarin de combinatie sterkte/gewicht/corrosieweerstand van belang is. In de meeste gevallen wordt het materiaal in geharde toestand geleverd, dat wil zeggen het materiaal is door de fabrikant oplosgegloeid, afgeschrikt en (warm) uitgehard ("volveredeld"). In de warmuitgeharde conditie (T6) heeft deze legering een 0,2% rekgrens die in de orde van grootte van die van S235JR ligt.
Onder "normale" atmosferische omstandigheden en ook in wat agressievere omgevingen zoals maritieme milieus heeft de kwaliteit EN AW-6082 een goede weerstand tegen corrosie, die nog verbeterd kan worden door anodiseren. Bij het lassen moet rekening worden gehouden met een daling van sterkte in de warmtebeïnvloede zone ende gevoeligheid voor warmscheuren. Door een geschikte warmtebehandeling (oplosgloeien en uitharden) is de sterkte van de warmbeïnvloede zone weer op het oorspronkelijke niveau te brengen. De lasnaad daarentegen zal in principe altijd een lagere sterkte hebben dan het basismateriaal. Door de warmscheurgevoeligheid zal in het algemeen met een geschikt toevoegmateriaal gelast moeten worden. Toepassingen: transportmiddelen (tanks, trailers), bouw, scheepsbouw (masten), machinebouw.
Lasbaarheid: enigszins gevoelig voor warmscheuren: daling sterkte
Lastoevoegmaterialen: 5356, 4034
Warmtebehandelingen: warmvervormen 520 -480°C / zachtgloeien 380 -420°C, tot 250°C langzaam afkoelen / oplosgloeien 525 -5400C afschrikken in water / uitharden 155 -190°C, gedurende 4 tot 16 uur |
|
|
| |
| EN AW-6082 / ISO Al Si1MgMn Corrosion and Anodizing Properties |
|
Temper
|
Corrosion
|
Anodizing
|
|
|
COA
|
COIA
|
COMA
|
CORA
|
SCOA
|
EXCA
|
ICOA
|
PCA
|
ANBA
|
ANCA
|
ANHA
|
ANPA
|
|
|
5
|
5
|
5
|
6
|
6
|
5
|
5
|
5
|
4
|
5
|
5
|
6
|
|
|
5
|
5
|
5
|
6
|
5
|
5
|
5
|
5
|
4
|
5
|
5
|
6
|
|
|
5
|
5
|
5
|
6
|
5
|
5
|
5
|
5
|
4
|
5
|
5
|
6
|
|
|
5
|
5
|
5
|
6
|
6
|
5
|
5
|
5
|
4
|
5
|
5
|
6
|
|
|
5
|
5
|
5
|
6
|
6
|
5
|
5
|
5
|
4
|
5
|
5
|
6
|
|
|
| Key to Parameters: |
| COA: |
Corrosion index, general |
scale 2-7 |
| COIA: |
Industrial atm corr index |
scale 2-7 |
| COMA: |
Marine atm corr index |
scale 2-7 |
| CORA: |
Rural atm corr index |
scale 2-7 |
| SCOA: |
Stress corrosion index |
scale 2-7 |
| EXCA: |
Exfoliation corrosion index |
scale 2-7 |
| ICOA: |
Intercrystalline corrosion index |
scale 2-7 |
| PCA: |
Pitting corrosion index |
scale 2-7 |
| ANBA: |
Bright anodising index |
scale 2-7 |
| ANCA: |
Colour anodising index |
scale 2-7 |
| ANHA: |
Hard anodising index |
scale 2-7 |
| ANPA: |
Protective anodising index |
scale 2-7 |
|
 |
| Key to Values: |
| -: |
No information available |
|
| 1: |
Not applicable |
|
| 2: |
Unsuitable |
|
| 3: |
Not recommended |
|
| 4: |
Acceptable |
|
| 5: |
Good |
|
| 5-6: |
Good to Very Good |
|
| 6: |
Very Good |
|
| 7: |
Excellent |
|
|
| |
Full tempers: O
| O |
Annealed - products achieving the required annealed properties after hot forming processes may be designated as O temper. |
| O1 |
Thermally treated at approximately the same time and temperature required for solution treatment and slow cooled to room temperature. |
| O2 |
Thermomechanically processed to enhance formability, such as required for super-plastic forming (SFP). |
| O3 |
Homogenized. |
|
|
|
| |
Full tempers: T1
| T1 |
Cooled from elevated temperature shaping process and naturally aged. |
| T1X |
Cooled from elevated temperature shaping process and naturally aged. When a second digit is present it is material dependent and has no general interpretation. |
|
|
|
| |
Full tempers: T4
| T4 |
Solution heat treated and naturally aged. |
| T42 |
Solution heat treated from the O or the F temper to demonstrate response to heat treatment, and naturally aged to a substantially stable condition. |
| T4X |
Solution heat-treated and naturally aged. When a second digit is present it is material dependent and has no general interpretation except for T42. |
|
|
|
| |
Full tempers: T5
| T5 |
Cooled from elevated temperature shaping process and artificially aged. |
| T5X |
Cooled from elevated temperature shaping process and artificially aged.When a second digit is present it is material dependent and has no general interpretation. |
|
|
|
| |
Full tempers: T6
| T6 |
Solution heat treated and artificially aged. |
| T62 |
Solution heat treated from the O or the F temper to demonstrate response to heat treatment, and artificially aged. |
| T651 |
Solution heat treated, stress relieved by stretching a controlled amount (permanent set 1.5 to 3% for sheet and plate, 1 to 3% for rolled or cold finished rod and bar, 1 to 5% for hand or ring forging and rolled ring) and then artificially aged. The products receive no further straightening after stretching. |
| T6510 |
Solution heat treated, stress relieved by stretching a controlled amount (permanent set 1 to 3% for extruded rod, bar, shapes and tube, 0.5 to 3% for drawn tube) and then artifically aged. The products receive no further straightening after stretching. |
| T6511 |
Same as T6510 except that minor straightening is allowed after stretching to comply with standard tolerances. |
| T652 |
Solution heat treated, stress relieved by compressing to produce a permanent set of 1 to 5% and then artificially aged. |
| T654 |
Solution heat treated, stress relieved by restriking cold in the finish die and then artificially aged. |
| T66 |
Solution heat treated and then artificially aged - mechanical property level higher than T6 achieved through special control of the process (6000 series alloys). |
|
|
|
| |
| EN AW-6082 / ISO Al Si1MgMn Physical and Elastic Properties |
|
Temper
|
Elastic
|
Physical
|
|
|
E
|
G
|
n
|
Tsol
|
Tliq
|
Cp
|
a
|
r
|
rel
|
l
|
EC
|
|
|
MPa
|
MPa
|
|
°C
|
°C
|
J kg-1 K-1
|
µm m-1 K-1
|
kg m-3
|
nW m
|
W m-1 K-1
|
%IACS
|
|
|
70000
|
26400
|
0.33
|
575
|
650
|
894
|
23.1
|
2710
|
31
|
216
|
55.5
|
|
|
70000
|
26400
|
0.33
|
575
|
650
|
894
|
23.1
|
2710
|
-
|
-
|
-
|
|
|
70000
|
26400
|
0.33
|
575
|
650
|
894
|
23.1
|
2710
|
41
|
167
|
42
|
|
|
70000
|
26400
|
0.33
|
575
|
650
|
894
|
23.1
|
2710
|
-
|
-
|
-
|
|
|
70000
|
26400
|
0.33
|
575
|
650
|
894
|
23.1
|
2710
|
39
|
172
|
44
|
|
|
| |
|
| Key to Parameters: |
| E |
Modulus of elasticity |
MPa |
| G |
Modulus of rigidity |
MPa |
| n |
Poisson's ratio |
|
| Tsol |
Solidus temperature |
°C |
| Tliq |
Liquidus temperature |
°C |
| Cp |
Specific heat capacity |
J kg-1 K-1 |
| a |
Coefficient of thermal expansion |
µm m-1 K-1 |
| r |
Density |
kg m-3 |
| rel |
Resistivity |
nW m |
| l |
Thermal conductivity |
W m-1 K-1 |
| EC |
Electrical conductivity |
%IACS |
|
| |
| EN AW-6082 / ISO Al Si1MgMn Cold Formability, Machinability and Weldability |
|
Temper
|
Cold Formability
|
Mach.
|
Joinability
|
|
|
CFA
|
CFDA
|
CFPA
|
CFSPA
|
EXTR
|
MAA
|
WEEB
|
WEGA
|
WEAA
|
WESA
|
BRAZA
|
SOLDA
|
|
|
5
|
5
|
5
|
5
|
5
|
3
|
5
|
5
|
6
|
4
|
5
|
5
|
|
|
4
|
|
|
|
5
|
5
|
5
|
5
|
6
|
|
5
|
5
|
|
|
4
|
4
|
|
4
|
5
|
5
|
5
|
5
|
6
|
5
|
5
|
5
|
|
|
4
|
4
|
3
|
3
|
5
|
5
|
5
|
5
|
6
|
5
|
5
|
5
|
|
|
4
|
4
|
3
|
3
|
5
|
5
|
5
|
5
|
6
|
5
|
5
|
5
|
|
|
| |
|
| Key to Parameters: |
| CFA: |
Cold formability index |
scale 2-7 |
| CFDA: |
Deep drawability index |
scale 2-7 |
| CFPA: |
Stretch formability index |
scale 2-7 |
| CFSPA: |
Suitability for spinning |
scale 2-7 |
| EXTR: |
Extrudability index |
scale 2-7 |
| MAA: |
Machinability index |
scale 2-7 |
| WEEB: |
Electron beam weldability index |
scale 2-7 |
| WEGA: |
Oxy-gas weldability index |
scale 2-7 |
| WEAA: |
Shielded arc weldability index |
scale 2-7 |
| WESA: |
Spot & seam weldability index |
scale 2-7 |
| BRAZA: |
Brazability index |
scale 2-7 |
| SOLDA: |
Solderability index |
scale 2-7 |
|
|
| Key to Values: |
| -: |
No information available |
|
| 1: |
Not applicable |
|
| 2: |
Unsuitable |
|
| 3: |
Not recommended |
|
| 4: |
Acceptable |
|
| 5: |
Good |
|
| 5-6: |
Good to Very Good |
|
| 6: |
Very Good |
|
| 7: |
Excellent |
|
|
| |
EN AW-6082 Alloy Composition Details
| Si |
|
0.7 - 1.3 |
| Mg |
|
0.6 - 1.2 |
| Mn |
|
0.40 - 1.0 |
| Fe |
|
<= 0.50 |
| Cr |
|
<= 0.25 |
| Zn |
|
<= 0.20 |
| Total Other |
|
<= 0.15 |
| Ti |
|
<= 0.10 |
| Cu |
|
<= 0.10 |
| Other Elem |
|
<= 0.05 |
| Al |
|
Remainder |
All compositions in wt%.
|
| |
| EN AW-6082 Mechanical Properties |
|
Temper
|
Form
|
RP02N
|
RP02
|
RMN
|
RM
|
RG
|
A5N
|
A5
|
A50N
|
A50
|
HBN
|
HB
|
HV
|
|
|
Sheet
|
-
|
60
|
-
|
130
|
85
|
18
|
27
|
-
|
26
|
35
|
35
|
35
|
|
|
Unspecif.
|
-
|
170
|
-
|
260
|
155
|
-
|
24
|
-
|
24
|
-
|
70
|
75
|
|
|
Unspecif.
|
-
|
170
|
-
|
260
|
170
|
-
|
19
|
-
|
19
|
-
|
70
|
75
|
|
|
Unspecif.
|
250
|
275
|
290
|
325
|
195
|
8
|
11
|
8
|
11
|
-
|
90
|
95
|
|
|
Extr. Tube
|
260
|
310
|
310
|
340
|
210
|
10
|
11
|
-
|
11
|
95
|
95
|
100
|
|
|
| Key to Properties |
| RP02N: |
Min proof stress 0.2% |
MPa |
| RP02: |
Proof stress 0.2% |
MPa |
| RMN: |
Min ultimate tensile strength |
MPa |
| RM: |
Ultimate tensile strength |
MPa |
| RG: |
Shear stress |
MPa |
| A5N: |
Min elongation A5 |
% |
| A5: |
Elongation A5 |
% |
| A50N: |
Min elongation A50 |
% |
| A50: |
Elongation A50 |
% |
| HBN: |
Min hardness, Brinell |
HBN |
| HB: |
Hardness, Brinell |
HB |
| HV: |
Hardness, Vickers |
HV |
|
|
| |