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Material Supplied by

Gränges

Aluminium Alloy FA6815 H14SR

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Description

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

Properties

Mechanical

Elongation A50 A50

0.5 % at 20 °C

Tensile strength Rm

180 - 220 MPa at 20 °C

Yield strength Rp0.2 Rp0.2

160 MPa at 20 °C

Thermal

Melting point Tm

635 - 655 °C

Thermal conductivity λ

160 W/(m·K) at 20 °C

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

Chemical properties

Element

Weight %

Comment

Al

-

balance

Mn

1.4 - 1.8 %

Zn

1.3 - 1.7 %

Si

0.65 - 1 %

Zr

0.05 - 0.2 %

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Technological properties

Corrosion properties

Corrosion potential (ASTM G69) measured on brazed unclad fin material -800 mV vs SCE

Dimension

Standard process capabilities: width 10-1400mm; thickness 0.050-3.18mm

Other

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.

Processing history

Temper: H14SR

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.