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NEPTUN 18           
Code : 1810  
Tip Colour : White  
Coating : Basic  
Recovery : 125%  
Correspondence :

AWS   A5.1 :  E 7018
DIN    1913  :  E 51 54 B 1
EN        499 :   E 46 4 B 42 H 10
ISIRI   871  : E - 434 B 20

 
Description :

It is a basic coated electrode engineered for high quality welds. It is used particularly to weld rigidly restrained mass structures where high welding stresses are unavoidable.
Weld metal has a high resistance to cracking, The slag is easy to remove and it gives excellent quality, smooth weld beads.
It is suitable for welding steels with low purity and high carbon content, also suitable for welding in vertical upwards position at a high welding speed.
It has 125 % metal recovery. Good weld ability in out of position work except for vertical down, deposits have very low hydrogen content and re-drying 300°C, min 2 h.

 
Application :

It is suitable for steel constructions and machines operating under dynamic forces.
Pipe connections and ship building, boiler and pressure vessel manufacturing are among its application areas.
It is recommended for the welding of high carbon, high strength low alloyed steels having high P and S content; high strength ship’s plate of A-, D- and E- quality and vessel plates of 17 Mn 4 and 19 Mn 5 type. It can join steel casts and can be used in welding of thick parts.,
It is suitable for the root pass and welding in difficult positions. It gives excellent weld beads with high impact strength values at subzero temperatures. It is also very suitable for welding of galvanized plates.

 
 
Typical chemical composition of weld metal. ( % )
C Si Mn  
0.07 0.50 0.90  
 
Typical mechanical properties of weld metal.
UTS
(N / mm² )
YP
( N / mm² )
EL ( % ) IV ( J )
-30oC         - 40oC
530 - 550 460 - 500

> 22

110                80
 

Size available and recommended currents  ( DC + )

Dia. ( mm ) 2.50 3.20 4.00 5.00
L ( mm ) 300 350 / 450 450 450
AMP.            F 50 ~ 80 110 ~ 150 140 ~ 200 190 ~ 260
         
 
 
Welding Steels
grades
:

General structural steels :
St 33, St 34, St 37, St 42, St 44, St 52-2, St 60-2.

Fine grained steels :
St E 255 - St E 420 ; WSt E 255
W St E 420, TSt E 255-TSt E 420.

Pipe materials :
St E 240-7, St E 290-7, St E 360-7; 5LX42-5LX60

Elevated temperature steels :
St 35.8, St 45.8

Boiler and pressure vessel steels :
H1, H11, H111, 17 Mn 4, 19 Mn 6

Ship plates :
A-, D-, E-, AH-, DH-, EH

Cast steels :
GS-38, GS-45, GS-52, GS-60, 65-62, C55, CK 55

 
Note :

To have best use and keep the properties in good condition, store in dry place.
In case of moisture, dry the electrode at 300oC for 2 hour before use.

 
                 
     
 
Head Office: No. 29, 1St Floor, Mollaei St. , Valiasr Ave. Tehran-IRAN
Tel : +98(21)88890689   Fax : +98(21)88908767
 
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