En
FaE 8018-B8–H8 E 505-15–H8
1087r3 ama 1087r3
Welding electrode for creep resistant steels
AMA 1087R3
| AWS/ASME SFA-5.4: | E 505-15–H8 |
| AWS/ASME SFA-5.5 : | E 8018-B8–H8 |
| DIN 8575 : | E CrMo 9 B 20+ |
| EN 1599: | E CrMo 9B 42 H10 |
Application/properties:
Electrode for welding of boilers, pressure vessels subjected to operating temperatures up to 600°C. Typical applications are: petrochemical process plant, hydro crackers in chemical industries.
Weld metal analysis in % (typical values):
| C | Mn | Si | Cr | Mo | S | P |
|---|---|---|---|---|---|---|
| 0.07 | 0.85 | 0.3 | 9.5 | 1 | <0.02 | <0.02 |
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 |
|---|---|---|---|---|
| 620 - 750 | > 500 | 20 | 80 | T |
| Welding Parameters | ||
|---|---|---|
| Diameter (mm) | Length (mm) | Amperage (A) |
| 2.5 | 250 | 60– 90 |
| 3.25 | 350 | 90– 130 |
| 4.0 | 350 | 140– 180 |
| 5.0 | 450 | 170– 230 |
Materials:
| DIN Standard | X12 CrMo 91, X7CrMo 91, G-X12 CrMo 10 1 |
| Other Standard | A217 Gr. C12; A 234 Gr. WP9; A335 Gr.P9 |
Rebaking:
- required at 300°C to 350°C for 2 hours.