2-303
Description
Basic electrode, core wire alloyed for welding heat resistant steels. For furnaces requiring
elevated resistance to reducing and oxidizing sulphurous gases as well as for final passes of
weld joints in heat resistant, ferritic CrSiAl steels.
Scaling resistant up to +1100 °C.
Approvals and Certificates
SEPROZ
Base Materials
ferritic-austenitic
1.4821 X 20 CrNiSi 25 4, 1.4823 G-X 40 CrNiSi 27 4
ferritic-perlitic
1.4713 X 10 CrAl 7, 1.4724 X 10 CrAl 13, 1.4742 X 10 CrAl 18, 1.4762 X 10 CrAl 25,
1.4710 X 30 CrSi 6, 1.4740 G-X 40 CrSi 17
AISI 327, ASTM A297HC
Typical Composition of All-weld Metal
C Si Mn Cr Ni
Wt-% 0.10 0.5 1.2 25.0 5.4
EN 1600:1997: E 25 4 B 2 2 BÖHLER FOX FA
SMAW basic electrode, high-alloyed,
heat resistant
Same Alloy Filler Metals
GTAW rod: FA-IG GMAW solid wire: FA-IG
Mechanical Properties of All-weld Metal
(*) u
Yield strength Re N/mm2 (MPa): 520 (≥ 490)
Tensile strength Rm N/mm2 (MPa): 680 (≥ 640)
Elongation A (L0 = 5d0) %: 22 (≥ 315)
Impact work ISO-V KV J + 20 °C: 45 (≥ 330)
(*) u untreated, as-welded
Operating Data
re-drying if necessary: ø mm L mm amps A
– 2.5 300 50 - 175
electrode identification: 3.2 350 80 - 105
FOX FA E 25 4 B 4.0 350 100 - 130
Preheating and interpass temperatures 200 - 400 °C, depending on the relevant base metal
and material thickness.
Heat Resistant Filler Metals - SMAW Covered Electrodes
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