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welding wire
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 welding wire >> ER55-B2 Browse: 591
 
 
 
Standard:GB ER55-B2   AWS ER80S-B2  
Characteristics: ER55-B2 is copper coated gas shielded welding wire for 1.25%Cr-0.5%Mo pearlite heat-resistant steel. It has good weldability and excellent comprehensive mechanical properties.
Application:The filling metal of ER55-B2 welding wire is employed to weld 0.5Cr-0.5Mo1Cr-0.5Mo and 1.25Cr-0.5Mo steel used under high temperature and corrosive environments, with Ar+20%CO2 mixed gas shielded, it is widely applied to the welding of structures such as conventional power station, nuclear power unit, petroleum purification, hydro-cracking equipment, synthesis chemical vessel, etc. For example, the boiler heating pipes with pipe wall temperature under 550 of 1.25Cr-0.5Mo series 08CrMoA12CrMo15CrMo etc, high-medium pressure steam conduit under steam temperature 510, steam turbine and so on; As well as the fixing welding of such as steam turbine cast steel cylinder body and so on of ZG15Cr1Mo, ZG15Cr1Mo etc.
 
Chemical composition(%)
C
Mn
Si
S
P
Cr
Cu
Mo
Ni
0.07-0.12
0.40-0.70
0.40-0.70
0.025
0.025
1.20-1.50
0.35
0.40-0.65
0.20
 
Typical mechanical properties of deposited metal:
Rm(MPa)
Rp0.2(MPa)
A(%)
Akv(room temperature)(J)
Shielded gas
620
520
22.5
-
Ar+20%CO2
 
Diameter and current: (DC)
Diameter(mm)
0.8
1.0
1.2
1.6
Current(A)
50-150
50-220
80-350
170-500

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