|
PRODUCT BULLETIN -
NEY380TM
ALLOY SPECIFICATION
SHEET FOR NEY380TM
FLUXLESS ALUMINUM SOLDER 1. The
composition of NEY 380TM
FLUXLESS
ALUMINUM SOLDER is a zinc based,
proprietary alloy and the name is trademarked. 2.
Temperature: 379C Solidus 390C
Liquidus
3.
Working Temperature:
392C to
495C
4.
Tensile Strength: Exceeds 50ksi Die
cast 1/4" section = 52,000 psi Ultimate
tensile strength is 40,000 lbs. per sq. inch. 5. Shear
Strength: Exceeds 45 K.s.i. Die
cast 1/4" section = 46,000 psi Actual
joint strength exceeds 25 K.s.i. 6. Solidification
Shrinkage:
1.2% (die design, use 0.3%
to 0.6%) 7.
Thermal Expansion:
25C to 105C = 0.00003 per C 8.
Thermal Conductivity:
75C to 145C. 0.245 cal / cu.
cm. / degrees C / second 9.
Electrical Conductivity:
24.9% of copper
10. Electrical
Resistivity: @
20C = 6.8 microhm-cm 11. Impact
Value:
Charpy 35 ft-lb. 12. Brinell
Hardness # :
97 13. Compressive
Strength:
Exceeds 90,000 psi 14. Density:
@ 21C = 6.7 g per cu. cm.
(.24
LB / cu. in. @ 70F) 15. Elongation:
7.5% (1/4")
3% in 2" ; Solidification
shrinkage 0.14" per ft. Testing: It is very important to use the SHG Zn for this
alloy and all impurity limits must be adhered to.
Failure to do so, will cause premature cracking and warpage.
Lead, Cadmium, Tin and Iron are to be kept below the threshold values as
outlined in the assay specifications.
Solder joints may show a weak bond if excessive silicone is present in
the base metal. No flux is recommended for the solder joint, since
fluxing will remove the trace elements that align the dendrite structure before
the bond is complete. Do not use a
deoxidizer on this product. A soft
Oxyacetylene flame is recommended. Pulsation
resistance welding will allow a controlled heating of the joint. Joint testing was undertaken by Reynolds Aluminum.
The solder was tested on both 3003-H14
and 1100-H14 aluminum. T-joints
were made by using 2 sheets of 0.01" x 2" x 3" and were subjected
to a continuous 5% salt spray test. No
failure was observed after 500 hours. Corrosion resistance is dependent upon the
surrounding environment. When
tested on the Eastern seaboard, Long Island, NY, the penetration rate reached
0.000030 inches per year. Near very
heavy industrial operations, the penetration was magnified to 0.000068 inches
per year. This material is expected
to perform safely wherever zinc and zinc coated steel has been used in the past
with success. Several socket joints were made to simulate return
bends used in practice for 3/8" diameter, 0.035" wall aluminum tubing.
They had a nominal 1/4" joint length.
They were subjected to 720 hours in a controlled humidity cabinet (100%
relative humidity) at 150 F. At the
end of this, they showed no visible signs of corrosion. Endurance limit on a 1/4" section showed a
limit of 8500 psi at 100,000,000 cycles. Lap joints were made from 2 sheets of 1/8"
thickness, 5" in length and 2" in width.
Using a Tinius Olsen Tensile Strength Test machine, the following results
were obtained:
a. As soldered: 28 K.s.i. sheer strength for 0.05" lap.
b. After 48 hours in flowing
synthetic tap water: 24.6 K.s.i.
sheer strength for 0.05 lap.
c. After 720 hours in 100% relative humidity at 150 F: 15.5 K.s.i. sheer
strength Standard Finishes:
Mechanical, electrodeposited, chemical, organic and plastic. If further assistance is required, please don't
hesitate to ask our production staff.
|
|
Send mail to our webmaster with questions or comments about this web site.
|