MK·ER55-B2-Mn

Published:2009/12/17


Standard:GB ER55-B2-Mn
Characteristics:MK ER55-B2-Mn is copper coated gas shielded welding wire for 1.25%Cr-0.5%Mo pearlite heat-resistant steel. It has good weldability and excellent mechanical properties.
Application:With Ar+20%CO2 mixed gas shielded welding, 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 (08CrMoA、12CrMo、15CrMo etc), high-medium pressure steam conduit with steam temperature under 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, ZG15Cr1MoA etc.
 
Chemical composition(%)
C
Mn
Si
S
P
Cu
Cr
Ni
Mo
0.06-0.10
1.20-1.70
0.60-0.90
≤0.025
≤0.030
≤0.35
0.90-1.20
≤0.25
0.45-0.65
 
Typical mechanical properties of deposited metal:
Rm(MPa)
Rp0.2(MPa)
A(%)
Akv(room temperature)(J)
Shielded gas
645
515
23
60
Ar+20%CO2
 
Diameter and current: (DC+)
Diameter(mm)
ф0.8
ф1.0
ф1.2
ф1.6
Current(A)
50-150
50-220
80-350
120-450

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