>Low Temperature Steel

LN-300
LN-300 is an all positions extra low hydrogen type electrode for 3.5% Ni steel bo be usedat low temperature (lowest -100℃)Good notch toughness of weld metal at low temperature is obtained because the weldmetal contains about 3.5% Ni.
- AWS
- A5.5 E8016-C2
- KS
- D 7023 DL5016-10AP3
- JIS
- Z 3211 E4916-N7APL
- EN
- ISO 2560-A E 46 6 3Ni B 1 2
ISO 2560-B E5516-N7 AP U
Applications | Welding of 3.5% Ni steel used for LPG tankers, LPG storage tanks and ethylene production equipments to be used at about -100℃. |
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Characteristics | LN-300 is an all positions extra low hydrogen type electrode for 3.5% Ni steel bo be used at low temperature (lowest -100℃) Good notch toughness of weld metal at low temperature is obtained because the weld metal contains about 3.5% Ni. |
Notes on usage | (1) Pay attention not to exceed proper heat-input because excessive heat-input causes deterioration of impact values of weld metal. (2) Preheat at 50~100℃ and postheat at 600~620℃. The preheat temperature varies in accordance with the plate thickness and the kind of steels. (3) Dry the electrodes at 350~400℃ for about one hour before use. (4) Adopt back step method or strike the arc on a small steel plate prepared for this particular purpose to prevent blowholes at the arc starting. (5) Keep the arc as short as possible. |
Shielding Gas | - |