E 8018–G–H4
1188n ama 1188n

Welding electrode for fine-grained structural steels

AMA 1188N

AWS/ASME SFA-5.5: E 8018–G–H4

Application/properties:

Basic electrode for production of crack free and tough welded joints. Weld metal is of high metallurgical purity with very low hydrogen content. Easy releasable slag and good bead profile.

Weld metal analysis in % (typical values):

C Mn Si Mo S P
0.08 1.5 0.45 0.15 <0.02 <0.02

Mechanical Properties of all-weld metal:

(single values are typical values)

Tensile Strength
( N/mm )
Yield Strength
( N/mm )
Elongation
A5 (%)
Impact energy (J)
ISO - V
20°C       -30°C+
550 - 650 >460 >22 >120       >50

Welding Parameters
Diameter (mm) Length (mm) Amperage (A)
2.5 350 65 – 90
3.25 450 90 – 130
4.0 450 140 – 180
5.0 450 190 – 230

Materials:

DIN Standard St 37-2 to St 60-2; St 37-3 to St 52-3; St 37.0 to St 52.0; St 37.4 to St 52.4; HI; HII; 17 mn 4; STE 255 to StE 355; 17 MnMoV 6 4; 15 NiCuMoNb5S
EN Standard S235JR- E335; S235J2G3 to S355J2G3; P235T1 to P355T1; P235T2; P355T2; P235GH; P265GH; P295GH; S255N to S355N
ASTM Standard A302 Gr.A, B; A517 Gr.A, B, C, E, F, H, J, K, M, P

Rebaking:

  • required at 300°C to 350°C for 2 hours.