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EN AW-7075 (AlZn5,5MgCu) aluminium round bar
Aluminium round bars

EN AW-7075 (AlZn5,5MgCu) aluminium round bar

The alloy grade with the highest commercially available strength values. A specifically high-strength tooling aluminium.

  • Outstandingly high strength
  • Excellent machinability
  • Not recommended for anodising and welding
  • Also suitable for substituting steel parts
Field of use
  • Machine and component manufacturing
  • Plastics injection moulding
  • Defence industry
  • Aerospace industry
Alloy grade
EN AW-7075 (AlZn5,5MgCu)
Tempers
T6
Formats
Bar stock – extruded, drawn execution

EN AW-7075 – chemical composition1

(EN 573-3)

Specifications (%)

Remainder: Aluminium

 Others
Si Fe Cu Mn Mg Cr Ni Zn Ti Ga V Notes Each Total2
0,40 0,50 1,20 - 2,00 0,30 2,10 - 2,90 0,18 - 0,28 - 5,10 - 6,10 0,20 - - - 0,05 0,15
1 Chemical specifications are in mass %. Where no range is given, the alloying content is the maximum value.
2 Includes all elements for which no separate limit is specified.

EN 754-2 – Mechanical properties: drawn aluminium round bars

Delivery
temper		 Diameter
(mm)		 Tensile strength Rm
(MPa)		 Proof strength Rp0,2
(MPa)		 Elongation
% min.		 Hardness
HBW
min. max. min. max. A50 mm A
T6 ≤ 80 540 – 485 – 6 7 150

EN 755-2 – Mechanical properties: extruded aluminium round bars

Delivery
temper		 Diameter
(mm)		 Tensile strength Rm
(MPa)		 Proof strength Rp0,2
(MPa)		 Elongation
% min.		 Hardness
HBW
min. max. min. max. A50 mm A
T6 ≤ 25 540 – 480 – 5 7 150
> 25 – ≤ 100 560 – 500 – – 7 150
> 100 – ≤ 150 550 – 440 – – 5 150
> 150 – ≤ 200 440 – 400 – – 5 150

EN AW-7075 – Al Zn5,5 Mg Cu – general alloy grade information

The values and data below are indicative – they help to give a general picture of the material.

Alloy designations

EN AWAl Zn5,5 Mg Cu
Old designationAl Zn Mg Cu1,5
Material number (DIN)3.4365
United Kingdom (BS)2L95
Italy (UNI)9007/2
Spain-
Sweden-
Norway-
France (AFNOR)A-Z5GU
Colour code RAL 4005   Blue Lilac

Typical physical properties

Density [g/cm3]2,80
Modulus of elasticity [GPa]72
Thermal conductivity [W/m*K]130 – 160
Thermal expansion coefficient [K-1*10-6] -50°C – 20°C   |   21,6
20°C – 100°C   |   23,4
20°C – 200°C   |   24,3
20°C – 300°C   |   25,2
Specific heat [J/(kg*K)]862
Electrical conductivity [m/Ω*mm2]19 – 23
Shear modulus [GPa]27,1

Heat treatment

Annealing / recrystallisation annealing
Annealing temperature380°C – 420°C
Heat-up time2 – 3 hours
Cooling conditions ≤ 30°C/hour to 230°C + 3 – 5 hours soak, air below 230°C
Hardening
Solution heat treatment470°C – 480°C
Quenchingwater
Natural ageingTypical artificial ageing
Artificial ageing 1st stage: 110°C – 125°C · 12 – 24 hours
2nd stage: 165°C – 180°C · 4 – 6 hours

Other data

Machinability
Annealed-
Work-hardened-
Heat-treated2
Dimensional stability4 – 5
EDM1
Surface treatment
Anodising – (protective anodising)3
Special anodising quality (EQ)EQ-
Anodising – decorative5
Painting / coating3
Polishing1
Weldability
Process Value Filler metal
Gas5-
TIG5-
MIG5-
Resistance welding2-
Solderability
Brazing with flux5
Brazing without flux5
Abrasion soldering5
Soft soldering with flux5
Corrosion resistance
In a normal atmosphere / weathering conditions4
Marine air environment4
Formability
Cold forming Value Delivery temper
Bending4O
Compression forming5
Deep drawing (temper-dependent)4 – 5O
Upsetting (temper-dependent)5
Impact extrusion5
Hot forming Value
Closed-die forging4
Extrusion4 – 5
Hammer forging4
Suitable for food contact (according to DIN EN 602) no
Service temperatures Long term approx. 90°C
Short term approx. 110°C – 125°C

Legend

1
very good
2
good
3
medium
4
poor
5
not suitable
EQ
Anodising quality, must be ordered separately and confirmed in writing

Dimensional tolerances of extruded round bars

DIN EN 755-4 : 2008

Alloy groups

Group I EN AW-1050A, EN AW-1070A, EN AW-1200, EN AW-1350
EN AW-3102, EN AW-3003, EN AW-3103
EN AW-5005, EN AW-5005A, EN AW-5051A, EN AW-5251
EN AW-6101A, EN AW-6101B, EN AW-6005, EN AW-6005A, EN AW-6106, EN AW-6008, EN AW-6010A, EN AW-6012, EN AW-6014, EN AW-6018, EN AW-6023, EN AW-6351, EN AW-6060, EN AW-6360, EN AW-6061, EN AW-6261, EN AW-6262, EN AW-6262A, EN AW-6063, EN AW-6063A, EN AW-6463, EN AW-6065, EN AW-6081, EN AW-6082, EN AW-6182
Group II EN AW-2007, EN AW-2011, EN AW-2011A, EN AW-2014, EN AW-2014A
EN AW-2017A, EN AW-2024, EN AW-2030
EN AW-5019, EN AW-5049, EN AW-5052, EN AW-5154A, EN AW-5454, EN AW-5754, EN AW-5083, EN AW-5086
EN AW-7003, EN AW-7005, EN AW-7108, EN AW-7108A, EN AW-7020, EN AW-7021, EN AW-7022, EN AW-7049A, EN AW-7075

Diameter tolerances (extruded – EN 755)

Dimensions in millimetres (mm)
Ø mm Tolerances
from to Alloy group I Alloy group II
≥ 1018± 0,22± 0,30
1825± 0,25± 0,35
2540± 0,30± 0,40
4050± 0,35± 0,45
5065± 0,40± 0,50
6580± 0,45± 0,70
80100± 0,55± 0,90
100120± 0,65± 1,0
120150± 0,80± 1,2
150180± 1,0± 1,4
180220± 1,15± 1,7
Note: For tolerances outside the sizes above, please ask our sales team.

Dimensional tolerances of extruded round bars

DIN EN 755-4 : 2008

Alloy groups

Group I EN AW-1050A, EN AW-1070A, EN AW-1200, EN AW-1350
EN AW-3102, EN AW-3003, EN AW-3103
EN AW-5005, EN AW-5005A, EN AW-5051A, EN AW-5251
EN AW-6101A, EN AW-6101B, EN AW-6005, EN AW-6005A, EN AW-6106, EN AW-6008, EN AW-6010A, EN AW-6012, EN AW-6014, EN AW-6018, EN AW-6023, EN AW-6351, EN AW-6060, EN AW-6360, EN AW-6061, EN AW-6261, EN AW-6262, EN AW-6262A, EN AW-6063, EN AW-6063A, EN AW-6463, EN AW-6065, EN AW-6081, EN AW-6082, EN AW-6182
Group II EN AW-2007, EN AW-2011, EN AW-2011A, EN AW-2014, EN AW-2014A
EN AW-2017A, EN AW-2024, EN AW-2030
EN AW-5019, EN AW-5049, EN AW-5052, EN AW-5154A, EN AW-5454, EN AW-5754, EN AW-5083, EN AW-5086
EN AW-7003, EN AW-7005, EN AW-7108, EN AW-7108A, EN AW-7020, EN AW-7021, EN AW-7022, EN AW-7049A, EN AW-7075

Diameter tolerances (extruded – EN 755)

Dimensions in millimetres (mm)
Ø mm Tolerances
from to Alloy group I Alloy group II
≥ 1018± 0,22± 0,30
1825± 0,25± 0,35
2540± 0,30± 0,40
4050± 0,35± 0,45
5065± 0,40± 0,50
6580± 0,45± 0,70
80100± 0,55± 0,90
100120± 0,65± 1,0
120150± 0,80± 1,2
150180± 1,0± 1,4
180220± 1,15± 1,7
Note: For tolerances outside the sizes above, please ask our sales team.
EN AW-7075 (AlZn5,5MgCu) aluminium round bar
EN AW-7075 (AlZn5,5MgCu) aluminium round bar
EN AW-7075 (AlZn5,5MgCu) aluminium round bar
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Note: We accept no liability or warranty for the correctness, accuracy or completeness of the information and data stated above. Standards and indicative values may change. Agreements are valid as set out in the quotation / order confirmation. We also draw attention to the fact that we accept no liability for colour shades arising during decorative anodising, or for corrosion-resistance results and how they develop. Individual terms may be agreed on a case-by-case basis and must be recorded in writing.