AK-J100SD
Standard:
EN ISO ——
AWS ——
GB/T ——
Characteristics and Applications: AK-J100SD is a high strength steel electrode with low hydrogen sodium coating. DC reverse connection can be used for all-position welding. Excellent welding process performance, low hydrogen diffusion in weld, with excellent low-temperature toughness and crack resistance. Mainly used for B950CF and the corresponding strength level of hydraulic pressure pipeline welding and installation.
Note:
1. The welding rod must be baked at 380 ° C for 1-2 hours before use, and put into 100-150 ° C incubator,
2. welding should be thoroughly removed the surface of the weld rust, oil, moisture and other impurities.
3. After welding, 180 ° C ~ 250 ° C hydrogen elimination treatment was carried out (holding time was decided by plate thickness) .
4. Use short arc and narrow pass during welding
Typical Chemical Composition(%):
C:0.04 Si:0.16 Mn:≥1.90 S:0.004 P:0.008 Ni: 3.07 Mo: 0.52 Cr：0.96 V: 0.01
Mechanical properties of deposited metal:
Tensile strength (MPa) : ≥1005
Yield Stress (MPa) : ≥869
Elongation (%) : ≥18.5
Impact values (J) : 85J/-40℃
Diffused hydrogen content of molten metal: ≤4.0mL/100g(mercury method or thermal conductivity method)
Molten metal X-ray detection requirements: Grade I
Recommended parameters: (Polarity: DC)
2.5mm: F(H)-70-100A/ V(OH)-60-90A
3.2mm: F(H)-90-130A/ V(OH)-80-120A
4.0mm: F(H)-140-170A/ V(OH)-130-150A
5.0mm: F(H)-170-210A
