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Classification :
Description :
A low hydrogen iron powder type electrode which deposits 1.25% Cr - 0.5% Mo weld metal. Excellent for welding creep resistant 0.5 Cr-0.5 Mo, 1Cr-0.5 Mo steels. The weld metal displays excellent strength and creep resistance at elevated temperatures up to 550oC. Metal recovery is above 110%.
Applications :
Chemical Composition of Weld Al (wt.%)
C | Mn | Si | Cr | Mo |
0.10 max | 12 - 18 | 0.5 max | 0.03 max | 0.03 max |
Mechanical Properties Of Weld Metal :
YS | 51 - 57 Kgf/mm2 |
UTS | 57 - 67 Kgf/mm2 |
Elongation | 20 % min |
Current Conditions : AC (50V) / DC ( + )
Size (mm) | 2.5 x 350 | 3.15 x 450 | 4 x 450 | 5 x 450 |
Amps | 70 - 100 | 100 - 140 | 140 - 180 | 180 - 240 |
Welding Positions : F, H, V-up, OH
Recommendations :
Redry the electrodes at 350oC for one hour or at 250oC for two hours. Keep the re-dried electrodes in a holding oven having 120o to 150oC temperature. Use the electrodes directly from the holding oven. The pre heat and inter pass temperature of 160o - 190oC is recommended. The welded section has to be stress relieved at 690oC at least for one hour.