E 8018–B2–H4R
AWS/ASME SFA-5.5E CrMo 1 B 20+
DIN 8575:E CrMo 1 B 42 H 5+
prEN1599:Application/properties:
Basic electrode that uses nano technology in a humid environment with 80% humidity, the electrode coating is resistant to moisture absorption for 9 hours. This electrode is suitable 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.
Weld metal analysis in % (typical values):
| C | Mn | Si | Cr | Mo |
|---|---|---|---|---|
| 0.06 | 0.80 | 0.40 | 1.00 | 0.50 |
Mechanical Properties of all-weld metal:
| 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 |
(single values are typical values)
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 |
Materials:
| DIN Standard | 13CrMo 44; 15CrMo 5; 16CrMo 44; 25CrMo 4; 24CrMo 5; GS-22CrMo 54; GS-17CrMo 55 |
| EN Standard | 13CrMo 4-5; 15CrMo 5; 42CrMo 4; 16CrMoV 4; 25CrMo 4; 24CrMo 5; G22CrMo 5-4; G17CrMo 5-5 |
| ASTM Standard | A193 Gr. B7; A335 Gr. P11 a. P12; A217 Gr. WC6 |
Remarks:
