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GM 821

IDENTIFICATION
GM 821, ERNiCr3

CLASSIFICATION
AWS/SFA 5.14: ERNiCr3, BS 2901-90 NA 35,
DIN 1736- 85WSGNiCr2ONb Worst-off no 2.4806

DESCRIPTION
GM 821 is intended for welding Inconel 600 and similar composition alloys. The deposit tolerates high dilution levels and is very resistant to hot cracking. It is not susceptible to sigma phase embitterment or carbon migration and is therefore ideal for service at elevated temperatures. The weld metal passes X-ray quality.

CHEMICAL ANALYSIS (RANGE) %

C	Cr	Mn	Si	S	P	Ti	Cu	Fe	Nb + Ta	Ni
0.1	18.0 - 22.0	2.5 - 3.5	0.5	0.015	0.03	0.75	0.5	3	2.0 - 3.0	67
max	18.0 - 22.0	2.5 - 3.5	max	max	max	max	max	max	2.0 - 3.0	min

MECHANICAL PROPERTIES (RANGE)

TS (N/mm²)	YS (N/mm²)	EL (%) (L=4D)	CVN Impact Value
			Temp	Joules
550 - 690	360 - 510	30 - 45	-196°C	60 - 120

TYPICAL APPLICATIONS

Suitable for dissimilar joining combination between nickel-base alloys, monel, mild and low alloy steels and austenitic stainless steels.
Can be used to clad carbon steel with inconel type surface.
For welding 5 % and 9 % nickel steel for cryogenic applications.
For welding Inconel 600 and similar composition alloys.

FERRITE CONTENT : FN 0

CORROSION RESISTANCE : Extremely good resistance to general and intergranular corrosion and very good resistance to stress corrosion cracking.

HIGH TEMPERATURE PROPERTIES : Resistance to oxidation in air upto 1150ºC, in sulphur dioxide upto 800ºC. In Hydrogen Sulphide up to 550ºC.

SHIELDING GAS : Ar 99.99% , 16-21 l/min ; Ar +30% He, 20-25 l/min

PACKING PARAMETERS

Size (mm)	Weight / Spool (kg)
0.8	15
1.2	15
1.6	15