KC-90SB9W

For butt and fillet welding of power plant, heat exchanger and oil refineries such as 9%Cr-0.5%Mo-Nb-V-W heat-resistant steel.

AWS     A5.28 : ER90S-G [ER90S-B9(mod.)]

Description

Sizes (mm) Standard Welding Position Shielding gas Polarity
1.2~1.6 AWS A5.28 ER90S-G [ER90S-B9(mod.)] F, HF Ar+5%CO2
Ar+10%CO2
DC(+)
 
Typical chemical composition of wire (%)
C Si Mn P S Cr Ni Mo Remark
0.10 0.24 0.54 0.007 0.003 8.88 0.43 V : 0.21
Nb : 0.06
W : 1.67
 
Typical mechanical properties of all-weld metal
Y.S (MPa) T.S (MPa) EI. (%) Hardness (HV) IV (J) PWHT
780
670
870
785
17
18
760℃x2Hr