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SupraCast™ C677F T5

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Description

SupraCast™ Alloys are optimized to meet the challenging future powertrain requirements by eliminating conventional aluminum alloy barriers. Castability, good thermal conductivity, high tensile strength and fatigue resistance at both low and high temperatures. Designed for high-pressure die cast (HPDC) components that require high strength and fatigue performance at elevated temperatures.

Properties

Electrical

Electrical conductivity σel

1.86E+7 - 2.09E+7 S/m at 20 °C

General

Density ρ

2.69 g/cm³ at 20 °C

Mechanical

Elastic modulus E

71 - 73 GPa at 20 °C

Elongation A

2 - 3 % at 20 °C

Fatigue strength SNf

90 MPa at 20 °C

measured after 10⁷ cycles, R = 1

Show chart

Tensile strength Rm

280 - 300 MPa at 20 °C

Yield strength YS

210 - 240 MPa at 20 °C

Thermal

Coefficient of thermal expansion α

2.06E-5 - 2.86E-5 1/K at 20 °C

measured from 20-300°C

Melting point Tm

510 - 600 °C

Thermal conductivity λ

140 - 160 W/(m·K) at 20 °C

Chemical properties

Element

Weight %

Comment

Al

-

balance

Si

8 - 10 %

Cu

0.7 - 2 %

Mn

0.35 - 0.8 %

Mg

0.2 - 0.55 %

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Technological properties

Application areas

High-pressure die cast components

Corrosion properties

Similar corrosion resistance as A359 alloy

General machinability

Very good machinability

Processing history

Temper: T5

Processing methods

Very good castability

Welding

Good weldability

This material data has been provided by Alcoa.

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.