Electrodes for Creep Resisting Steels
CROMOTHERME-91
AWS: SFA 5.5 E9015-B91
EN ISO CODE: 3580-A E CrMo91 B 4 2
Cromotherme-91 is 9Cr - 1Mo, non-synthetic, low hydrogen electrode modified with Aluminium, Niobium, Vanadium and Nitrogen designed to provide improved creep strength, toughness, fatigue life, oxidation and corrosion resistance at elevated temperatures. It is designed to weld the materials in power plant and refineries. Following are some of the steels that can be welded with this electrode.
* Plate: A 387 Gr. 91 * Pipes: A 335 - P91 * Tubes: A 213 - T91
Approvals
Adani Infra
BHEL
CE
CIB-MP
Reliance
CHEMICAL COMPOSITION OF ALL WELD METAL (%)
| Element | C | Mn | Si | P | S | Cr | Ni | Mo | V | Nb | N | Cu | Ai |
| Percent | 0.10 | 0.65 | 0.25 | 0.007 | 0.008 | 9.00 | 0.045 | 1.00 | 0.20 | 0.06 | 0.03 | 0.02 | 0.02 |
MECHANICAL PROPERTIES OF ALL WELD METAL
| UTS | YS | Elongation | CVN Impact Strength (J) | Hardness |
| (MPa) | (MPa) | (L= 5d)% | at 20°C | HV |
| 690 | 580 | 19 | 60 | 205 |
CREEP PROPERTIES: Successfully completed 40119 Hours at 600oC/100 MPa.
DIFFUSIBLE HYDROGEN CONTENT: 4 ml/100 gms of weld metal Max. (When measured according to AWS-4.3-86 Specification)
CURRENT AND PACKING DATA: DC (+)
| Size (mm) | 5x450 | 4x350 | 3.15x350 | 2.5x350 |
| Current Range (Amps) | 170-230 | 130-170 | 80-120 | 60-80 |
| Qty. (Pcs./Carton) | 30 | 50 | 75 | 100 |
Electrodes for Creep Resisting Steels
