TIG Wire for Heat Resistant Steel

Main composition of GTR-1CM is 1.25Cr-0.5Mo, it is argon arc welding wire for 590MPa heat resisitant steel.
Classifications:
AWS- A5.28 ER80S-B2
A5.28M ER55S-B2
EN- G CrMo 1Si
ISO-21952 B-W55 1CM

Characteristics and Applications
It has excellent weldability— sound wire feeding, stable arc, good appearance, little spatter; stable mechanical properties of deposited metal, high X-Ray qualification rate. It is applicable in heating surface tube of boiler under 550°C.

Typical Chemical Composition of Weld Metal:
Alloy wt %
C
Mn
Si
Cr
Ni

Mo
P
S
Cu
AWS
0.07-0.12
0.40-0.70
0.40-0.70
1.20-1.50
0.20
0.40-0.65
0.025
0.025
0.35
EXP
0.073
0.55
0.61
1.38
0.02
0.58
0.011
0.008
0.14
Typical Mechanical Properties of Weld Metal:
Mechanical Property
Yield Strength MPa
Tensile Strength MPa
Elongation %
Impact Value J/°C

AWS
470
550
19
—
EXP
518
586
29
-
Notes on Usage:
Polarity:AC or DC-.
Preheating under 150±15°C before welding and proper inter-pass temperature should be kept.
Gas flow: Current :100-200A,flow:7-12L/min. 200-300A, gas flow: 12-15L/min.