B?HLER P 92-IG伯樂(lè)焊絲

Description
GTAW rod especially designed for the welding of a 9 % Cr 1.5 % W Mo-Nb-N / P92, NF616-steels.
Approved in long-term condition up to +650 °C service temperature.
Approvals and Certificates
TüV-D (9292.), UDT
Same Alloy Filler metals
SMAW stick electrode: FOX P 92 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
shielding gas:
100 % Argon ? mm
rod marking:  2.0
front: P 92 2.4
back: –
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 below 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 : 710 (≥ 560) 650 230 (≥ 125)
tensile strength R m N/mm 2 : 820 (≥ 720) 770 340
elongation A (L 0 = 5d 0 ) %: 19 (≥ 315) 320 321
impact work ISO-V KV J + 20 °C: 77 (≥ 341) 370
(*)  a annealed 760 °C/2 h/furnace down to 300 °C/air – shielding gas Argon
a2 annealed 760 °C/6 h/furnace down to 300 °C/air – shielding gas Argon
Typical Composition of Welding Rod
C Si Mn Cr Ni Mo V Nb W N
wt-% 0.10 0.4 0.4 8.6 0.6 0.4 0.2 0.05 1.5 0.05