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I. DESCRIPTION: Tech-Rod 620 electrodes are used for welding of NiCrMo Alloys as well as
low alloy steels such as 9% nickel steels and 5% nickel steels. They can be used for cryogenic
service conditions up to -196 C. This is an A.C/D.C. electrode specially designed for A.C.
welding and it will not create arc blow conditions when welding low alloy steels.II. APPROVALS: Manufactured under Quality System approved by ASME & ISO9001. Meets
AWS A5.11, Class ENiCrMo-6.III. CHEMICAL COMPOSITION MECHANICAL PROPERTIES
Carbon 0.06 Tensile Strength
Manganese 3.1 101,200 PSI 700 MPA
Silicon 0.33
Iron 9.2 Yield Strength
Chromium 14.7 64,200 PSI 440 MPA
Molybdenum 6.4
Columbium 1.05 Elongation 30%
Tungsten 1.75 Impact @ -196ο
C 38 ft/lbs 51 Joules
Phosphorus 0.009
Sulfur 0.008
Nickel BalanceIV. WELDING PARAMETERSDirect Current Alternate Current
Electrode + VeAMPERAGES:
3/32” 65-75
1/8” 90-105
5/32” 120-135
3/16” 135-155V. PACKAGES AVAILABLE:3/16”-10# can, 5/32”–10# can, 1/8”–10# Can, 3/32–8# can