Electrode for welding of creep resistant and high-pressure hydrogen resistant steels used in the construction of pressure vessels, boilers and piping subjected to operating temperatures up to+550°C. Welds are of X-ray quality. Preheating, inter-pass temperature and post-weld heat treatment in accordance with base metal to be welded.
Weld metal analysis in % (typical values):
C
Mn
Si
Mo
0.06
0.80
0.50
0.50
Mechanical Properties of all-weld metal:
(single values are typical values)
Tensile Strength ( N/mm 2 )
Yield Strength ( N/mm 2 )(%)
Elongation A5,(%)
Impact energy (J) ISO - V 20°C+
Heat treatment
520 - 650
> 470
>22
160
T
T: Tempered 1 hour at 620°C, air cooling
Welding Parameters
Diameter (mm)
Length (mm)
Amperage (A)
2.5
350
65 – 90
3.25
450
90– 130
4.0
450
140 – 180
5.0
450
190 – 230
Materials:
DIN Standard
St 37-3 to St 52-3; St 37-2 to St 60-2; St 35.8 to St 45.8; StE 320.7 to StE 415.7; StE 255 to StE 500; 17 Mn 4; 19 Mn 5; 15 Mo 3; TStE 255 to TStE 500.
EN Standard
S355J2G3; E295; E355; P255G1TH; L320 to L415NB; L320MB to L415MBM; S255N to S500N; P295GH; P310GH; 16Mo3; 15NiCuMoNb5, 20MnMoNi4-5; 17MnMoV6-4; S255NH to S500NH; S255NL to S500NL.
