Description: HJ251 is a fused type low manganese-oxide flux with jadestone granule of yellow color,about 10-60 mesh in size.It can be used on AC or DC power source. It provides good welding usability.
Applycation:This flux primarily used for welding of pearlitic heat resistant steel turbine rotors with Cr-MO wires.
Guidelines For Usage:
1.Dry the flux at 300~350°C for 2 hours before use.
2.Completely remove rust, oil and dirt from the groove surface prior to welding.
Typical Flux Composition Range (%)
|
SiO2+Al2O3
|
CaF2+CaO+MgO
|
S
|
P
|
|
36-45
|
40-53
|
≤0.05
|
≤0.08
|
Typical Chemical Properties of Weld metal: (GB/T 12470-03 F5011-HI0Mn2)
|
Test Item
|
σb
|
σs
|
δ5
|
AKV(J)
|
|
(MPa)
|
(MPa)
|
(%)
|
0°C
|
|
|
Standard Value
|
≥380
|
480-650
|
≥22
|
≥27
|
|
Test value
|
414
|
530
|
30
|
115
|
Packing: 25kg/Kraft paper bag
