E 8018–G–H4
1284n ama 1284n

Welding electrode for fine-grained structural steels

AMA 1284N

AWS/ASME SFA-5.5: E 8018–G–H4
DIN 8529 : E Y 5076 Mn 1 Ni B H5
EN 499 : E 50 6 Mn 1 Ni B 42 H5

Application/properties:

Electrode for producing crack-free and tough welded joints. Weld metal is extremely metallurgical pure having very low hydrogen content. The electrode has a stable and concentrated arc, thus being well-suited or positional welding. Welds are of X-ray quality.

Weld metal analysis in % (typical values):

C Mn Si Ni
0.07 1.6 0.4 0.9

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       -60°C+
590 - 690 >510 >24 200          80

Welding Parameters
Diameter (mm) Length (mm) Amperage (A)
2.5 350 65 – 95
3.25 450 90 – 135
4.0 450 140 – 180
5.0 450 190 – 240

Materials:

DIN Standard StE 420 to StE 500; St 37-3 to St 52-3; WStE 420 to WStE 500; TStE 255 to TStE 500; StE 240.7 TM to StE 445.7 TM; StE 210.7 to StE 445.7; EStE 255 to EStE 460. ; ;
EN Standard S255N to S355N;S235J2G3 to S355J2G3; P255NH to P500NH; S255NL to S500NL; L245MB to L450MB; L210-L450NB; E295 to E335; P355 NL 1 to P460NL1; S380N to S460N; P355NH to P460NH; S380NL to 460NL; S255NL1 to S420NL1.0NH.
ASTM Standard A516 Gr.65, A572 Gr.55, 60, 65, A633 Gr. E, A612, A618 Gr. I, A537 Gr. 1-3. A678 Gr. A-D.

Rebaking:

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