BÖHLER FOX P 92伯乐焊条

BÖHLER FOX P 92伯乐焊条

Description
Basic coated Cr-Mo-Ni-V-W-Nb alloyed stick electrode suited for welding of high temperature steel
9%Cr-1.5% W-Mo-Nb-N. Approved in long-term condition up to + 650 °C service temperature. The stick
electrode features a stable arc, good striking and re-striking properties, low spatter loss and an easy
removable slag.
Approvals and Certificates
TÜV-D (9291.), UDT, SEPROZ
Same Alloy Filler metals
GTAW rod: P 92-IG SAW combination: P 92-UP/BB 910
base Materials
similar alloyed creep resistant steels
NF 616
ASTM A335 Gr. P 92 (T92); A213 Gr. T92
Operating Data
re-drying if necessary: ø mm L mm amps A
300 - 350 °C, min. 2 h 3.2 350 190 - 120
electrode identification: 4.0 350 110 - 140
FOX P 92 E Z CrMoWVNb9 0.5 2 B
Preheating and interpass temperature 200-300 °C. After welding the joint should cool down below 80 °C,
to finish the martensite transformation. In case of greater wall thickness or complex components the
possibility of residual stresses must be considered.
The following postweld heat treatment is recommended: Annealing 760 °C/min. 2 hours, max. 10
hours, heating/cooling rate up to 550 °C max. 150 °C/h, above 550 °C max. 80 °C/h. In case of heat
treatments less than 2 hours the requirements have to be proved by a procedure test.
For optimised toughness values a welding technology should be applied which produces thin welding
layers (approx. 2 mm).
Mechanical Properties of All-weld metal
(*) a a2 a2 (650 °C test temp)
yield strength R e N/mm 2 : 690 (≥ 560) 630 230 (≥ 125)
tensile strength R m N/mm 2 : 810 (≥ 720) 760 330
elongation A (L 0 = 5d 0 ) %: 19 (≥ 315) 320 322
impact work ISO-V KV J + 20 °C: 55 (≥ 341) 380
0 °C: 350
(*)  a annealed 760 °C/2 h/furnace down to 300 °C/air
a2 annealed 760 °C/6 h/furnace down to 300 °C/air
Typical Composition of All-weld metal
C Si Mn Cr Mo Ni W V N Nb
wt-% 0.1 0.3 0.7 9.1 0.55 0.7 1.7 0.2 0.045 0.05