1、Filler Materials for Stainless and Heat-Resistant Steel According to DIN 8556Filler materials for welding stainless and heat-resistant steelExample Finox 4519 ACE 20 25 5 Cu LR 2 3 -1 2 3 4 5 61 Short symbol for manual arc welding2 Short name for chemical structure of the weld metal. The alloy compo
2、nents (approximate values) are listed in the order Cr, Ni, Monumerically one after another without their chemical symbols. Alloy components like niob and copper are added as their chemical symbol without specification of their contents. Mangan as alloy component is listed as chemical symbol only if
3、its content exceeds 5 % of the total weight. The addition L indicates a very low carbon content. Short symbolType of coatingR Rutile typeThese rod electrodes contain titanium oxide as main component in their coating, mostly in rutile form.B Basic typeThe coating contains a high proportion of calcium
4、 or other alkaline earth metal carbonates and fluorspar.3MP Alloy-coating typeAlloy-coating high-performance electrodes need to be marked with the short symbol MP for metal powder before the short symbol for coating type, e. g. MP R.Code no.Code letter acc. to DIN 1912Welding position41 w, h, h, s,
5、f, q, all positions2 w, h, h, s, q, wall positions, except vertical-down positionbutt weld, flat position3 whfillet weld, flat positionfillet weld, downhand position4 wwbutt weld, flat positionfillet weld, flat positionCode no. or symbol for current suitabilityAC or DC DC onlyOpen-circuit voltageat (V)Code no. Polarity of the rod electrode50 1 4 7 0 any polarity70 2 5 8 0- negative590 3 6 9 0+ positiveCode no.Transfer efficiency- 105%110 105% 115%120 115% 125%130 125% 135%140 135% 145%150 145% 155%6160 155% 165%
