Fortrex NQ1
SFA/AWS A5.5-81          : E9016G

Description and applications

Fortrex NQ1 is a basic, thinly coated electrode designed to weld HY80 and equivalent grade steels in all positions except vertical down. This was the first electrode to gain MOD(N) NES 769 approval for the welding of Q1(N) steel.  Also suitable for welding RQT 501 steel.

Approvals

MOD : Q1N
(Navy)
DEFSTAN 02-769 Q1(N)


  
All-weld metal properties
Chemical Composition
All Weld Metal (%)
Min Max
C 0.070
Si 0.20 0.60
Mn 1.30

1.70
P 0.020
S 0.020
Cr 0.05
Ni 0.60 1.30
Mo 0.10 0.60
V 0.010
Cu 0.05
Al 0.025
Ti 0.040

 

Mechanical        As-welded

YS                    600 min       N/mm2
UTS                  620 min       N/mm2
Elongation         20 min         %
Charpy V impact
values at -50°C   50 min ave   J 
       
Current range    AC (min OCV 70) or DC -
Size Current mm amps 3.2
70-140 		4.0
110-180		 5.0
160-250

Murex Welding Products
Hanover House, Queensgate, Britannia Road,
Waltham Cross, Herts, EN8 7TF
Telephone: (01992) 710000 Fax (01992) 719191