铝合金的典型机械性能

Aluminum 7475-T651

Categories: Metal; Nonferrous Metal; Aluminum Alloy; 7000 Series Aluminum Alloy

Material Notes: Data points with the AA note have been provided by the Aluminum Association, Inc. and are NOT FOR DESIGN.

Composition Notes:

Composition information provided by the Aluminum Association and is not for design.

Key Words: UNS A97475; ISOu(A); Aluminium 7475-T651; AA7475-T651UNS A97475; ISO AlZn5.5MgCu(A); Aluminium 7475-T7651; AA7475-T7651

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Properties

Density 2.81 g/cc 0.102 lb/in³AA; Typical Mechanical

Properties

Metric English Comments

Hardness, Brinell 150 150 500 kg load with 10 mm ball.

Calculated value.

Hardness, Knoop 190 190 Converted from Brinell Hardness

Value

Hardness, Rockwell A 53.5 53.5 Converted from Brinell Hardness

Value

Hardness, Rockwell B 87 87 Converted from Brinell Hardness

Value

Hardness, Vickers 175 175 Converted from Brinell Hardness

Value

Tensile

Strength,

Ultimate

586 MPa 85000 psi AA; Typical

Tensile

Strength,

Yield

510 MPa 74000 psi AA; Typical

Elongation at Break

13.0 %

@Diameter 12.7 mm

13.0 %

@Diameter 0.500 in

AA; Typical

Modulus of Elasticity 71.7 GPa 10400 ksi AA; Typical; Average of tension and

compression. Compression modulus

is about 2% greater than tensile

modulus.

Poissons

Ratio

0.330 0.330

Fracture

Toughness

29.7 MPa-m½ 27.0 ksi-in½ plate; S-L

37.4 MPa-m½ 34.0 ksi-in½ plate; T-L

42.9 MPa-m½ 39.0 ksi-in½ plate; L-T Machinability 70 % 70 % 0-100 Scale of Aluminum Alloys Shear

Modulus

27.0 GPa 3920 ksi

Shear

Strength

350 MPa 50800 psi Calculated value.

Electrical Properties Metric English Comments Electrical

Resistivity

0.00000499 ohm-cm @Temperature 20.0 °C 0.00000499 ohm-cm

@Temperature 68.0 °F AA; Typical

Thermal Properties Metric English Comments

CTE, linear

21.6 µm/m-°C @Temperature -50.0 - 20.0 °C 12.0 µin/in-°F

@Temperature -58.0 - 68.0 °F

23.2 µm/m-°C @Temperature 20.0 - 100 °C 12.9 µin/in-°F

@Temperature 68.0 - 212 °F

AA; Typical; average over range

23.4 µm/m-°C @Temperature 20.0 - 100 °C 13.0 µin/in-°F

@Temperature 68.0 - 212 °F

24.3 µm/m-°C @Temperature 20.0 - 200 °C 13.5 µin/in-°F

@Temperature 68.0 - 392 °F

25.2 µm/m-°C @Temperature 20.0 - 300 °C 14.0 µin/in-°F

@Temperature 68.0 - 572 °F

25.2 µm/m-°C @Temperature 20.0 - 300 °C 14.0 µin/in-°F

@Temperature 68.0 - 572 °F

average

Specific Heat Capacity 0.880 J/g-°C 0.210 BTU/lb-°F Estimated from trends in similar Al

alloys.

Thermal Conductivity 138 W/m-K 960 BTU-in/hr-ft²-°F AA; Typical at 77°F

Melting Point 477 - 635.0 °C 890 - 1175 °F AA; Typical range based on typical

composition for wrought products 1/4

inch thickness or greater

Solidus 477 °C 890 °F AA; Typical Liquidus 635.0 °C 1175 °F AA; Typical

Processing Properties Metric English Comments

Annealing Temperature 413 °C 775 °F

Solution

Temperature 516 °C 960 °F must be preceded by soak at 870 to

890°F

Aging

Temperature 121 - 177 °C

250 - 350 °F

Component Elements Properties Metric

English Comments Aluminum, Al

88.5 - 91.5 % 88.5 - 91.5 % As remainder

Chromium, Cr

0.18 - 0.25 % 0.18 - 0.25 % Copper, Cu 1.20 - 1.90 % 1.20 - 1.90 % Iron, Fe <= 0.12 % <= 0.12 % Magnesium, Mg

1.90 -

2.60 % 1.90 - 2.60 % Manganese, Mn

<= 0.060 % <= 0.060 % Other, each <= 0.050 % <= 0.050 % Other, total <= 0.15 % <= 0.15 % Silicon, Si <= 0.10 % <= 0.10 % Titanium, Ti <= 0.060 % <= 0.060 % Zinc, Zn

5.20 -

6.20 %

5.20 -

6.20 %

References for this datasheet.