PRODUCT TYPE : SPECIAL FORMULATED All POSITIONS HIGH ALLOYED ELECTRODE WITH HIGH TENSILE / ELONGATION BALANCE FOR JOINING MACHINE PARTS SUBJECTED TO THERMAL CYCLING. ULTIMATE THERMAL SHOCK RESISTANCE.
DESCRIPTION : N 502
APPLICATIONS : For dissimilar weld on nickel base alloys to themselves, to alloyed steels or to stainless steels. Application for operations and / or industries include : Nuclear equipment. Thermal shock-cryogenic equipment, refrigeration, heat treating equipment. Impact resistance – injection molds, forging tools and dies. Gas liquification equipment. Chemical processing equipment. Furnace equipment
MICROSTRUCTURE : In the as welded condition this nickel base weld metal consist of austenite with a few carbides.
CHARACTERISTICS Excellent coefficient of expansion and contraction properties. Superior deposition rate and out of position weld. Due to its excellent elongation properties( 45%) combined together with its high tensile strength ( 106, 000 PSI), there is a dramatic improvement in the ability of the alloy to withstand high stress in service. N502 is 100% non-responsive to heat treatment. It is highly recommended for many applications involving low temperature and high temperature service- especially where these temperature change drastically in short intervals of time. Extremely easy slag removal and performs unusually well on AC current.
WELDING TECHNIQUES : Weld at minimum amperage to maintain low heat input
RECOMMENDED AMPERAGE [ DC Positive (+) or AC ] :-
Diameter (mm
|
2.5
|
3.2
|
4.0
|
Min. Amps
|
50
|
70
|
90
|
Max. Amps
|
70
|
90
|
120
|
MECHANICAL PROPERTIES :
Tensile Strength : 106,000 PSI
Yield Strength : 60,000 PSI
Elongation : 45%
Hardness : 20 RC
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