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Aluminium Alloy FA6815 H14SR

Supplied by Gränges
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Gränges
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Description

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

Chemical composition

Element Weight %
Al
balance
Mn 1.4 — 1.8
Zn 1.3 — 1.7
Si 0.65 — 1.0
Fe 0.0 — 0.4
Zr 0.05 — 0.2
Cu 0.0 — 0.05
Mg 0.0 — 0.05

Properties

Mechanical

Elongation A50

[ A50 ]

Elongation A50

0.50 %

Tensile strength

[ Rm ]

Tensile strength

180.00—220.00 MPa

Yield strength Rp0.2

[ Rp0.2 ]

Yield strength Rp0.2

160.00 MPa

Thermal

Melting point

[ Tm ]

Melting point

635—655 °C

Thermal conductivity

[ λ ]

Thermal conductivity

160.00 W/(m·K)

After brazing, calculated from electric resistivity data measured at room temperature
All metrics apply to room temperature unless otherwise stated. SI units used unless otherwise stated.

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.
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