Specification

26 ı THE LINCOLN ELECTRIC COMPANY
STICK (SMAW) ELECTRODE
Excalibur
®
7018 MR
®
Welding Positions
Typical Applications
All, except vertical down
 Mild steel
 Power generation
 Petrochemical
 Pressure vessels
 Pressure piping
 Premium arc performance
 Square coating burn-off
 Easy strike and re-strike
 Effortless slag removal
 Minimal spatter for enhanced operability
and clean weld surface
Conformances
Mild Steel, Low Hydrogen • AWS E7018 H4R
Key Features
AWS A5.1/A5.1M: 2004
ASME SFA-A5.1:
ABS:
Lloyd’s Register:
DNV Grade:
GL:
BV Grade:
CWB/CSA W48-06:
EN ISO 2560-B:
E7018 H4R
E7018 H4R
3Y H5
3YM H5
3 YH5
3YH5
3YHHH
E4918
E4918 A H5
DIAMETERS / PACKAGING
Diameter Length 1 lb (0.5 kg) Plastic Tube
6 lb (2.7 kg) Master Carton
10 lb (4.5 kg) Easy Open Can
30 lb (13.6 kg) Master Carton
50 lb (22.7kg)
Carton
in (mm) in (mm)
3/32
1/8
5/32
3/16
7/32
1/4
(2.4)
(3.2)
(4.0)
(4.8)
(5.6)
(6.4)
14 (350)
14 (350)
14 (350)
14 (350)
18 (450)
18 (450)
ED032086
ED031468
ED032588
ED032589
ED032590
ED028280
ED028281
ED028282
ED028283
ED028917
ED028918
TYPICAL OPERATING PROCEDURES
Current (Amps)
Polarity
(4)
3/32 in (2.4 mm) 1/8 in (3.2 mm) 5/32 in (4.0 mm) 3/16 in (4.8 mm) 7/32 in (5.6 mm) 1/4 in (6.4 mm)
DC+ 70-110 90-160 130-210 180-300 250-330 300-400
AC 80-120 100-160 140-210 200-300 270-370 325-420
MECHANICAL PROPERTIES
(1)
– As Required per AWS A5.1/A5.1M: 2004
Yield Strength
(2)
Tensile Strength Elongation
Charpy V-Notch
J (ft•lbf)
MPa (ksi) MPa (ksi) % @ -29°C (-20°F)
Requirements - AWS E7018 H4R 400 (58) min. 490 (70) min. 22 min. 27 (20) min.
Typical Results
(3)
- As-Welded 430-510 (62-74) 510-605 (74-88) 25-37 121-332 (89-246)
DEPOSIT COMPOSITION
(1)
– As Required per AWS A5.1/A5.1M: 2004
%C %Mn %Si %P %S %Ni
Requirements - AWS E7018 H4R 0.15 max. 1.60 max. 0.75 max. 0.035 max. 0.035 max. 0.30 max.
Typical Results
(3)
0.03-0.08 1.01-1.55 0.34-0.68 0.01-0.02 ) 0.01 0.01-0.06
%Cr %Mo %V
%Mn + Ni + Cr
+ Mo + V
Diffusible Hydrogen
(mL/100g weld metal)
Requirements - AWS E7018 H4R 0.20 max. 0.30 max. 0.08 max. 1.75 max. 4.0 max.
Typical Results
(3)
0.02-0.07 ) 0.05 ) 0.02 1.04-1.75 2-3
(1)
Typical all weld metal.
(2)
Measured with 0.2% offset.
(3)
See test results disclaimer below.
(4)
Preferred polarity is listed first.