Golden Bridge
Golden Bridge (JQ-J427NP) Electrode
Golden Bridge (JQ-J427NP) Electrode
SKU:JQ-J427NP-3/32-11
JQ-J427NP
JQ-J427NP is a low-hydrogen sodium coated carbon steel welding electrode for nuclear power use. It adopts DCEP and is permitted for all positions welding. It presents good welding performance with smooth arc, low spatter level, effortless slag removal ability and optimal bead appearance. The deposited metal has excellent plasticity, low-temperature toughness and crack resistance.
It is applicable for the welding works in nuclear power engineering, pressure vessels and corresponding structures.
Chemical components of deposited metal (%)
Test item |
C |
Mn |
Si |
S |
P |
Ni |
Cr |
Mo |
V |
Cu |
| Example value | 0.064 | 0.83 | 0.42 | 0.006 | 0.015 | 0.008 | 0.040 | 0.006 | 0.006 | 0.010 |
Mechanical properties of deposited metal
Test item |
Rm(MPa) |
ReL/Rp0.2(MPa) |
A(%) |
KV2(J) |
-30℃ | ||||
| Example value | 525 | 430 | 30 | 180 |
X-ray flaw detection requirements: Level I
Reference current (DC+)
Welding electrode diameter (mm) |
Φ2.5 |
Φ3.2 |
Φ4.0 |
Φ5.0 |
| Welding current (A) | 60-90 | 80-120 | 130-180 | 170-220 |
1. Before welding, the welding electrode should be baked at about 350 - 400℃ for 1h, and put in an incubator at 100 - 150℃ for ready use.
2. Impurities such as rust, oil stain and moisture must be cleared o
2. Impurities such as rust, oil stain and moisture must be cleared o
