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Ideal for welding fine grained and Nickel steels for service temperatures down tominus 50 C. Typical applications include storage tanks for liquefied gases like Ammonia, distillers in coke oven batteries and petrochemical industries. Also suitable for welding heavy sections and highly restrained joints subjected to dynamic loading, impact and severe service conditions.
1. Ensure the electrodes are dry. Re-dry the electrodes at 250-300°C for one hour.
2. Accomplish minimum heat input during welding by,
a. Controlling preheat and interpass temperature. b. Using smallest size of electrode possible. c. Minimum weaving.
3. Depositing maximum number of layers, which enable grain refinement.
|UTS||YS||Elongation||CVN Impact Strength (J)|
|(MPa)||(MPa)||(L= 4d)%||at Minus 50°C|
|Current Range (Amps)||200-250||140-180||90-120||70-90|