E 8018–B2–H8
AWS/ASME SFA – 5.5:E CrMo 1 B 20+
DIN 8575 :E CrMo 1 B 42 H 10
prEN 1599: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 +570°C. Welds are of X-ray quality.
Preheating, interpass temperature and post-weld heat treatment in accordance with base metal to be welded.
| C | Mn | Si | Cr | Mo |
|---|---|---|---|---|
| 0.06 | 0.80 | 0.40 | 1.00 | 0.50 |
(single values are typical values)
| Tensile Strength ( N/mm 2 ) | Yield Strength ( N/mm 2 )(%) | Elongation (5*d)% | Impact energy (J) ISO - V 20°C+ | Heat treatment |
|---|---|---|---|---|
| 560 - 660 | > 490 | >22 | 120 | T |
| 450 - 550 | > 300 | >26 | 150 | N+T |
T: Tempered 0.5 hour at 700°C, air cooling
N+T: Normalized + tempered 0.5 hour at 920°C, air cooling + 0.5 hour at 700°C
| Welding Parameters | ||
|---|---|---|
| Diameter (mm) | Length (mm) | Amperage (A) |
| 2.5 | 350 | 60 – 85 |
| 3.25 | 450 | 100– 130 |
| 4.0 | 450 | 140 – 180 |
| 5.0 | 450 | 190 – 230 |
| DIN Standard | 13CrMo 44, 15 CrMo 5, 16 CrMo 44, 25 CrMo 4,24 CrMo 5, GS – 22 CrMo 54, GS- 17 CrMo 55 |
| EN Standard | 13CrMo 4-5, 15 CrMo 5, 42 CrMo 4, 16 CrMoV 4, 25 CrMo 4,24 CrMo 5, G22 CrMo 5-4, G17 CrMo 5-5 |
| ASTM Standard | A193 Gr. B7; A355 Gr.P11 a. P12; A217 Gr. WC6 . |
required at 300°C to 350°C for 2 hours.