En
FaE 7018–G–H4
1398n ama 1398n
Welding electrode for fine-grained structural steels
AMA 1398N
| AWS/ASME SFA-5.5: | E 7018–G–H4 |
| DIN 8529 : | E SY 42 761 Ni B H5 |
| EN 499 : | E 46 61 Ni B 42 H5 |
Application/properties:
Electrode for producing crack-free and tough welded joints. Weld metal is extremely metallurgical purity 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. CTOD-tested for offshore application.
Weld metal analysis in % (typical values):
| C | Mn | Si | Ni | S | P |
|---|---|---|---|---|---|
| 0.06 | 1.20 | 0.3 | 0.95 | <0.015 | <0.015 |
Mechanical Properties of all-weld metal:
(single values are typical values)
|
Tensile Strength ( N/mm 2 ) |
Yield Strength ( N/mm 2 ) |
Elongation A5 (%) |
Impact energy (J) ISO - V 20°C -60°C+ |
Heat treatment |
|---|---|---|---|---|
| 530 - 680 | >460 | >22 | 190 70 | AW |
| 500 - 640 | >420 | >25 | 190 60 | SR |
AW: As Welded
SR: Stress – Relieved 15 hours. /580°C
| Welding Parameters | ||
|---|---|---|
| Diameter (mm) | Length (mm) | Amperage (A) |
| 2.5 | 350 | 65 – 95 |
| 3.25 | 450 | 90 – 140 |
| 4.0 | 450 | 140 – 185 |
| 5.0 | 450 | 180 – 250 |
Materials:
| DIN Standard | St 33 to St 52.3; St 50.2 to St 70.2; H?; H??; 17 Mo 4; 19 Mn 5; StE 210.7 to StE 415.7; StE 285 to StE 460; WStE 255 to WStE 460; EStE 255 to EStE 460; GS-38 to GS-52. |
| EN Standard | S235J2GS to S355J2G3; L210 to L415; E295 to E360; P235GH; P265GH; P295GH; P355GH. |
| ASTM Standard | A131 Gr.A, B, C; AH32 to EH40; A517 Gr.A, B, C, E, F, H, J, K, M, P; A225 Gr. C; A633 Gr. E; A572 Gr. 65. |
Rebaking:
required at 300°C to 350°C for 2 hours