Instruction and Application: Low-sodium type coating of high strength low alloy steel electrodes. DC reverse polarity, can be carried out for all-position welding, welding performance. Used in power level welding equipment and yield strength for 500MPa material, such as SA-508 Gr. 3 Cl. 2 steel.
Typical Chemical Composition of the all-welded metal(％)
|
C |
Si |
Mn |
S |
P |
Ni |
Mo |
Cr |
|
0.005 |
0.30 |
1.64 |
0.003 |
0.007 |
1.39 |
0.55 |
0.04 |
Mechanical properties of all-weld metal
|
Temperature |
Tensile strength Rm(MPa) |
Yield strength Rp(MPa) |
Elongation A(%) |
Impact Strength KV2(J,-30℃) |
Heat treatment |
|
Room temperature |
710 |
625 |
23 |
110,105,120 |
AW |
|
685 |
575 |
26 |
85,80,95 |
608℃×12h |
HD (Mercury method): ≤5.0ml/100g
Deposited metal radio-graphic testing:
According to NB / T 47013.2, the radio-graphic detecting technique should not be less than class AB and the quality grade of deposited metal should not be less than Class I.
Reference Current(DC+):
|
Sizeφ（mm) |
φ2.5 |
φ3.2 |
φ4.0 |
φ5.0 |
|
Amperage (A) |
70-100 |
90-130 |
130-180 |
180-220 |
Notice:
1.Redry the electrode at 400℃ for 1hours.
2.Multi-pass welding must clean the welding slag. Each layer is controlled below 250 ℃.
Contact us