En
FaE 7018–A1–H8
1261n ama 1261n
Welding electrode for creep resistant steels
AMA 1261N
| AWS/ASME SFA-5.5: | E 7018–A1–H8 |
| DIN 8575 : | E Mo B 20+ |
| prEN 1599: | E Mo B 42 H 10 |
Application/properties:
Electrode for welding of creep resistant and high-pressure hydrogen resistant steels used in the construction of pressure vessels, boilers and piping subjected to operating temperatures up to+550°C. Welds are of X-ray quality.
Preheating, inter-pass temperature and post-weld heat treatment in accordance with base metal to be welded.
Weld metal analysis in % (typical values):
| C | Mn | Si | Mo |
|---|---|---|---|
| 0.06 | 0.80 | 0.50 | 0.50 |
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+ |
Heat treatment |
|---|---|---|---|---|
| 520 - 650 | > 470 | >22 | 160 | T |
T: Tempered 1 hour at 620°C, air cooling
| 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 37-3 to St 52-3; St 37-2 to St 60-2; St 35.8 to St 45.8; StE 320.7 to StE 415.7; StE 255 to StE 500; 17 Mn 4; 19 Mn 5; 15 Mo 3; TStE 255 to TStE 500. |
| EN Standard | S355J2G3; E295; E355; P255G1TH; L320 to L415NB; L320MB to L415MBM; S255N to S500N; P295GH; P310GH; 16Mo3; 15NiCuMoNb5, 20MnMoNi4-5; 17MnMoV6-4; S255NH to S500NH; S255NL to S500NL. |
| ASTM Standard | A204 Gr.A, B, C; A217 Gr.WC1; A213 Gr.T2; A355 Gr.P1; A182M Gr.F1; A204M Gr.A, B, C; A250 Gr.T1 APl Spec. 5 L : X52, X56, X60 |
Rebaking:
required at 300°C to 350°C for 2 hours.
