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Electrodes for Creep Resisting Steels
CROMOTHERME-2(RTE)
AWS: SFA 5.5 E9018-B3
EN ISO CODE: 3580-A E CrMo2 B 3 2 H5
Weld metal having strict control on S, P, As, Sn & Sb will improve the subzero impact property and resists temper embrittlement. Weld metal retains its mechanical properties after prolonged heat treatments. Ideal for welding steam generating equipments and reactor vessels. The weld metal displays excellent tensile strength and creep resistance. Specially applicable wherever temper embrittlement resistance is required.
| Element | C | Mn | Si | Cr | Mo | Sb | As | S | P | Sn | Al | V | Ni | Cu | Ti |
| Percent | 0.06 | 0.5 | 0.2 | 2..4 | 1.0 | 0.001 | 0.0035 | 0.007 | 0.007 | 0.0035 | 0.002 | 0.01 | 0.10 | 0.02 | 0.002 |
| - | YS | UTS | Elongation | CVN Impact Strength (J) | Hardness |
| - | (MPa) | (MPa) | (L= 5d)% | at Minus 40°C | (VPN) |
| SR at 690°C/ 1 hr | 550 | 640 | 22 | - | - |
| SR at 690°C/ 6 hr | 455 | 560 | 24 | 90 | 180 |
| SR at 690°C/ 40 hr | 425 | 535 | 26 | 100 | - |
DIFFUSIBLE HYDROGEN CONTENT: 4 ml/100 gms of weld metal (max.).
X-FACTOR: (10P + 5Sb + 4Sn + As) / 100 ≤ 15.0 (elements in ppm)
J-FACTOR: (%Si + %Mn) x (%P + %Sn) 104 ≤ 125
PE: (C + Mn + Mo +Cr/3 + Si/4) + 3.5(10P + 5Sb + 4Sn + As) < 3
STEP COOLING REQUIREMENT: CvTr54 + 2.5 Ä CvTr54SC < 10°C
(Where CvTr54: Transition temperature at absorbed energy of 54J of heat treated
specimen. CvTr54SC: Shift in 54J transition temperature due to step cooling)
|
Size (mm) Dia x length |
6.3x450 | 5x450 | 4x350 | 3.15x350 | 2.5x350 |
| Current Range (Amps) | 250-300 | 200-250 | 140-180 | 100-130 | 70-100 |
| Qty. (Pcs./Carton) | 25 | 35 | 55 | 75 | 100 |
Electrodes for Creep Resisting Steels
