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AA Standards Grade 7075 T7351

Alternative and trade names
FORMODAL® BM-7075, 7075 T751
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Description

A high strength aerospace aluminium alloy offering good corrosion resistance.

Related Standards

Equivalent Materials

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Properties

General

Density

ρ

2.8 - 3.1 g/cm³ at 20 °C

Surface roughness

RMS

0.4 μm

Dimension

Dimensions

Dicke

Thickness

t

8 - 100 mm

Mechanical

Elastic modulus

E

72 GPa at 20 °C

Elongation

A

14 % at -195 °C

Elongation in 50 mm

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Elongation A100

A100

5 - 9 % at 20 °C

Elongation A50

A50

7 - 10 % at 20 °C

Hardness, HBW

HBW

126 - 140 [-] at 20 °C

Plane-Strain Fracture Toughnes

KIC

32.1 MPa·√m at -196 °C

For plate in T-L direction

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Poisson's ratio

ν

0.33 [-] at 20 °C

Typical for Wrought 7000 Series Aluminium

Shear modulus

G

26.4 - 27.1 GPa at 20 °C

Typical for Wrought 7000 Series Aluminium

Tensile strength

Rm

635 MPa at -195 °C

up to 10000 h at temperature, at 35 MPa/min to yield strength and then at strain rate of 5%/min to fracture

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Yield strength

YS

340 - 420 MPa at 20 °C

Yield strength Rp0.2

Rp0.2

496 MPa at -196 °C

up to 10000 h at temperature, at 35 MPa/min to yield strength and then at strain rate of 5%/min to fracture

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Thermal

Coefficient of thermal expansion

α

2.3E-5 - 2.35E-5 1/K at 20 °C

Mean values between 20°C and the mentioned temperature

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Melting point

Tm

480 - 635 °C

Specific heat capacity

cp

862 - 910 J/(kg·K) at 20 °C

Thermal conductivity

λ

130 - 160 W/(m·K) at 20 °C

Electrical

Electrical conductivity

σel

1.90E+7 - 1.91E+8 S/m at 20 °C

Typical/derived value

Electrical resistivity

ρel

4.31E-8 Ω·m at 20 °C

Typical value

Specific Electrical conductivity

40 % IACS

Typical value

Chemical properties

Element

Weight %

Comment

Al

86.9 - 91.4 %

Balance

Zn

5.1 - 6.1 %

Mg

2.1 - 2.9 %

Cu

1.2 - 2 %

Cr

0.18 - 0.28 %

More

Technological properties

Anodizing

moderate

Application areas

Tool making, mould making and model making; Aerospace; Military technology

Brazing

general: no brazing is known or developed

Corrosion properties

moderate

General machinability

good

Soldering general

not recommended

Welding

Resistance welding: good

Workability

general (condition): not suitable

This material data has been provided by Righton Blackburns,BIKA,MakeItFrom.com,ASM Handbook Volume 2 Properties and Selection: Nonferrous Alloys and Special-Purpose Materials,WroughtAl_ElectricalResistivity,AluKey.

All metrics apply to room temperature unless otherwise stated. SI units used unless otherwise stated.
Equivalent standards are similar to one or more standards provided by the supplier. Some equivalent standards may be stricter whereas others may be outside the bounds of the original standard.