Summary Table of welding electrodes Page electrode grade drug skin type welding power supply main purpose 1 CHR107 low hydrogen type DC welding low hardness at room temperature 2 CHR112 titanium calcium type AC and DC welding low hardness at room temperature 3 CHR127 low hydrogen welding current at room temperature hardness 4 CHR132 titanium calcium type AC and DC welding hardness at room temperature in 5 CHR172 titanium calcium type AC and DC welding of high hardness at room temperature 6 CHR207 low hydrogen welding current at room temperature with high hardness 7 CHR212 titanium calcium type AC-DC high hardness at room temperature with low hydrogen welding 8 CHR227 DC rock, sediment wear parts surfacing 9 CHR237 low hydrogen type DC silt and cavitation wear parts surfacing 10 CHR256 low hydrogen type AC-DC high manganese steel surfacing 11 CHR266 low hydrogen type AC-DC high manganese steel surfacing 12 CHR276 AC-DC low hydrogen gas corrosion and high manganese steel surfacing 13 CHR307 low hydrogen type DC manufactures high-speed steel cutting tools and repair welding 14 CHR322 titanium calcium type AC-DC Die surfacing and cutting tool 15 CHR326Ni low hydrogen type AC-DC cold die cutting tools and welding 16 CHR327 low hydrogen type DC Die cutting tools and welding 17 CHR337 low hydrogen type DC forging die surfacing 18 CHR397 low hydrogen type DC forging die surfacing 19 CHR502 titanium calcium type AC-DC 1Cr13 valve Surfacing 20 CHR507 low hydrogen type DC 1Cr13 valve surfacing 21 CHR507Mo low hydrogen type DC 1Cr13 valve surfacing 22 CHR507MoNb low hydrogen type DC 23 CHR512 1Cr13 valve welding titanium calcium type AC-DC 2Cr13 valve surfacing 24 CHR517 low hydrogen type DC 2Cr13 valve surfacing 25 CHR547Mo low hydrogen type DC high voltage valve surfacing 26 CHR547MoA low hydrogen type DC high voltage valve surfacing 27 CHR557 low hydrogen type DC CrNi 28 CHR577 valve welding low hydrogen type DC high voltage valve surfacing 29 CHR608 graphite type AC-DC sediment abrasion and minor shock members surfacing 30 CHR618 graphite type AC-DC resistance sediment, cavitation wear parts surfacing 31 CHR646 low hydrogen type AC-DC high-temperature wear parts surfacing 32 CHR648 graphite type AC-DC high-temperature wear parts surfacing 33 CHR678 graphite AC and DC welding pieces of silt and impact 34 CHR698 graphite type AC-DC silt and strong wear parts surfacing 35 CHR707 low hydrogen type DC silt and strong wear parts surfacing