HFM 21S
Basic coated electrode for creep resisting steels
Description & applications
Low hydrogen basic coated electrode with Cr and Mo for welding creep resisting steels up to 600°C (including 2%Cr -1%Mo casting). High resistance to H2S, ...
For overeaters, valve bodies, pipes, boilers, hydrocrackers.
Steels and pipes for boilers and pressure vessels:
NF A 36-206 : 15CD4-05 – 10CD9-10
DIN 17155 and 17245 : 10 Cr Mo 9.10 – 10 Cr Si Mo V7
: 24 CrMo V55 – 12 Cr Mo 9.10 GS 12 Cr MO 9.10…
BS : 1501 Gr 622 to 1504 Gr 622, BS 359 Gr 622/640 1503 Gr 660, 1504Gr 660
ASTM : A 387 GrD – A 335 GrP 22 – A 213 GrT 22, T36
Nuance Vallourec : Chromesco 3
Classification
| NFA 81-345 | AWS A 5.5 | BS 2493 | EN ISO 3580 | DIN 8575 |
|---|---|---|---|---|
| E C2 Cr Mo B 120 20 BH | E 9018-B3 | Cr Mo BH | E 2 Cr Mo B 20 | E Cr Mo 2 B 20 + |
Typical weld metal composition (%)
| C | Mn | Si | S | P | Cr | Mo |
|---|---|---|---|---|---|---|
| 0.07 | 0.8 | 0.4 | <0.025 | <0.025 | 2.25 | 1.0 |
All weld metal mechanical properties
| Rm (MPa) | Rp0.2 MPa | A5 (%) | Av - ISO - V |
|---|---|---|---|
| >570 | >450 | 17 | 20°C >100 |
Packaging data
| Dimension | 2.5x350 | 3.2x350 | 4.0x450 | 5.0x450 |
|---|---|---|---|---|
| Electr. / packet | 244 | 143 | 96 | 64 |
| Electr. / carton | 976 | 572 | 384 | 256 |
| Kg 1000 electr. | 20.5 | 35 | 68 | 102 |
| Packets / carton | 4 | 4 | 4 | 4 |
| Kg / packet | 5 | 5 | 6.5 | 6.5 |
| Kg / carton | 20 | 20 | 26 | 26 |
Amperes
| A | 80 | 115 | 150 | 190 |
|---|
