JQ.TH550-NQ-Ⅲ
JQ Th550-NQ-ⅲ is a weather-resistant submerged arc welding wire, which has excellent performance with effortless slag removal ability and optimal bead appearance.
Working with sintered-flux JQ-SJ101NQ, the product is applicable for welding weathering steel with 550MPa tensile strength.It is mainly used in the fields such as rolling stock, construction machinery and so on.
Chemical components of welding wire (%)
Item |
C |
Mn |
Si |
S |
| Example value | 0.065 | 1.40 | 0.30 | 0.008 |
| Item | P | Cr | Ni | Cu |
| Example value | 0.012 | 0.36 | 0.35 | 0.31 |
Mechanical properties of deposited metal
Test itemCombined welding-flux
|
Rm (MPa) |
ReL/Rp0.2 (MPa) |
A (%) |
KV2 (J) -40℃ |
| JQ-SJ101NQ | 589 | 486 | 29 | 100 |
Reference specification(DC )
Wire diameter（mm） |
Φ2.5 |
Φ3.2 |
Φ4.0 |
Φ5.0 |
| Electric current（A） | 350~500 | 400~550 | 470~600 | 550~650 |
| Voltage（V） | 27~30 | 28~31 | 28~32 | 30~34 |
