Aluminium Fin Alloy FA 6825 H14SR

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Description

A strong material with good sag resistance. This alloy is suited for controlled atmosphere brazing.


The FA68XX alloy family is a reliable and thoroughly evaluated fin alloy family that is characterised by a high post braze strength, and a good sagging resistance during brazing. The alloy is designed to form large grains during brazing, which is beneficial for the sagging behaviour and hinders braze metal penetration into the core. The high manganese and silicon content contribute to a higher strength after brazing. The corrosion resistance of the fin alloys is good, with a low self corrosion rate. FA68xx is available in four different zinc levels to allow for a tailored cathodic protection of tubes and fillets.


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Gränges products

Equivalent Materials

This material data has been provided by Gränges.

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.

Ashby charts

Properties

Dimension

PropertyValue

Dimensions

<p>Standard process capabilities:</p> <p>Width: 10-1400mm</p> <p>Thickness 0.050-3.18mm</p>

Mechanical

PropertyTemperatureValueComment

Elongation A50

23.0 °C

0.5 %

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Min.

Tensile strength

23.0 °C

180 - 220 MPa

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Yield strength Rp0.2

23.0 °C

161 MPa

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Thermal

PropertyTemperatureValueComment

Thermal conductivity

23.0 °C

160 W/(m·K)

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After brazing, calculated from electric resistivity data measured at room temperature

Electrical

PropertyTemperatureValueComment

Corrosion potential

23.0 °C

-880 mV

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Electrical resistivity

23.0 °C

3.4E-8 - 4.3E-8 Ω·m

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Changes depending on temper

Chemical properties

PropertyValue

Aluminium

Balance

Copper

0 - 0.05 %

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Iron

0 - 0.4 %

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Magnesium

0 - 0.05 %

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Manganese

1.4 - 1.8 %

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Silicon

0.65 - 1 %

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Zinc

2.3 - 2.7 %

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Zirconium

0.05 - 0.2 %

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Technological properties

Property
Application areas

Automotive, Heat Exchangers

Processing history

Temper: H14SR