AMA 1245N | Product Name: |  |
| AWS/ASME SFA-5.4: | ||
| E 9018-B3-H8 | AWS/ASME SFA-5.5: | |
| E CrMo 2 B 20+ | DIN 8575: | |
| E CrMo 1 B 32 H10 | 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+600°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):
| Mo | Cr | Si | Mn | C |
| 1 | 2.40 | 0.50 | 0.80 | 0.06 |
Mechanical Properties of all-weld metal:
(single values are typical values)
| Impact energy (J) ISO-V | Elongation | Yield Strength (N/mm2) | Tensile Strength (N/mm2) | Heat treatment |
| +20°C | ||||
| 100 | > 22 | > 440 | 570 – 670 | T |
| 140 | > 24 | > 350 | 500 – 600 | N+T |
T: Tempered 0.5 h at 700C, air cooling
N+T: Normalized + Tempered 0.5 h at 920C, air cooling + 0.5 h at 750C
| Welding Parameters | |||
| Amperage (A) | Length (mm) | Diameter (mm) | |
| 50 – 85 | 350 | 2.5 | |
| 85 – 130 | 450 | 3.25 | |
| 90 – 180 | 450 | 4.0 | |
| 150 – 240 | 450 | 5.0 | |
 |
Materials:
| 10CrMo 9 10; 10CrSiMoV7; 24CrMo 10; GS-12CrMo 9 10; GS-19CrMo 9 10 | DIN Standard |
| 10CrMo 9-10; 10CrSiMoV7; G17CrMo9-10 | EN Standard |
A335 Gr. P22; A217 Gr. WC 9 | ASTM Standard |
Rebaking:
required at 300°C to 350°C for 2 hours.