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AL 718 BAlSi-4 TDS

This document provides technical data on AL 718 (BAlSi-4), an aluminum brazing alloy produced by The Prince & Izant Company. AL 718 has a low melting point and narrow melt range, making it suitable for brazing aluminum alloys. It has increased silicon content compared to other aluminum filler metals, providing increased fluidity and reduced shrinkage during brazing. AL 718 also significantly reduces hot cracking during the brazing process. Joint strengths in aluminum assemblies brazed with AL 718 are optimized with clearances of 0.003-0.005” per side.

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170 views2 pages

AL 718 BAlSi-4 TDS

This document provides technical data on AL 718 (BAlSi-4), an aluminum brazing alloy produced by The Prince & Izant Company. AL 718 has a low melting point and narrow melt range, making it suitable for brazing aluminum alloys. It has increased silicon content compared to other aluminum filler metals, providing increased fluidity and reduced shrinkage during brazing. AL 718 also significantly reduces hot cracking during the brazing process. Joint strengths in aluminum assemblies brazed with AL 718 are optimized with clearances of 0.003-0.005” per side.

Uploaded by

rahitt
Copyright
© © All Rights Reserved
We take content rights seriously. If you suspect this is your content, claim it here.
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Download as PDF, TXT or read online on Scribd
You are on page 1/ 2

The Prince & Izant Compan y

12999 Plaza Drive


Cleveland, Ohio 44130
T: 216-362-7000
F: 216-362-7456
www .princeizant.com

AL 718 (BAlSi-4)
TECHNICAL DATA

Aluminum Balance
Silicon 12.0% ± 1.0
Copper 0.3% Max
NOMINAL Iron 0.8% Max
Magnesium 0.1% Max
COMPOSITION
Manganese 0.15% Max
Zinc 0.2% Max
Other Elements, Each 0.05% Max
Other Elements, Total 0.15% Max

Color Grayish-White
Solidus 1070°F (577°C)
Liquidus 1080°F (582°C)
PHYSICAL Recommended Brazing Temperature 1080-1120°F (582-604°C)
PROPERTIES Density (Lbs/in3) 0.096
Specific Gravity 2.66
Electrical Conductivity (%IACS) N/A
Electrical Resistivity (Microhm-cm) N/A

AL 718 is a general purpose filler metal for joining aluminum and aluminum
USES
alloys. Solution temperature during heat treating must be below the solidus of the
braze alloy in order to ensure integrity of the joint is maintained.
AL 718 has a low melting point and narrow melt range which makes it suitable for
BRAZING brazing aluminum alloys. In addition, the increased silicon content compared to
CHARACTERISTICS other aluminum filler metals provides increased fluidity as well as reduced
shrinkage. The use of AL 718 also significantly reduces hot cracking during the
brazing process.
The properties of a brazed joint are dependent upon numerous factors including
base metal properties, joint design, metallurgical interaction between the base
metal and the filler metal. Joint clearances of 0.003-0.005” (0.076-0.127 mm)
per side ideal for achieving the highest joint strength in aluminum brazed
PROPERTIES OF assemblies.
BRAZED JOINTS Base Alloy Tensile Strength(KSI) Yield Strength (KSI) Elongation (%)
2014-T6 34 28 4
6061-T4 27 28 8
6061-T6 27 28 8
6063-T4 20 10 12
AL 718 alloy conforms to: Unified Numbering System (UNS) A94047, American
SPECIFICATIONS Welding Society (AWS) A5.8/A5.8M BAlSi-4, Aluminum Association 4047 and
Aerospace Material Specification (AMS) 4185

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AVAILABLE FORMS Wire, strip, engineered preforms, specialty preforms per customer specification,
powder and paste.
SAFETY The operation and maintenance of brazing equipment or facility should conform
INFORMATION to the provisions of American National Standard (ANSI) Z49.1, “Safety in
Welding and Cutting.”

Individuals requiring further information and Engineering Specification Documents may


wish to contact the Engineering Society for Advanced Mobility, Land Sea Air and Space,
The Society of Automotive Engineers http://www.sae.org/ (SAE AMS) or The American
Welding Society (AWS) http://aws.org/

NOTE:

DISCLAIMER The information and recommendations contained in this publication have been provided
without charge & compiled from sources believed to be reliable and to represent the best
information available on the subject at the time of issue. No warranty, guarantee, or
representation is made by the Prince and Izant Company, Inc. as to the absolute
correctness or sufficiency of any representation contained in this and other publications;
Prince and Izant Company, Inc. assumes no responsibility in connection therewith; nor can
it be assumed that all acceptable safety measures are contained in this (and other
publications, or that other or additional measures may not be required under particular or
exceptional conditions or circumstances.

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