Mô tả
OK 76.26
Basic low-hydrogen electrode for the AC/DC welding of creep-resistant steels of the 2.3% Cr/1% Mo type, such as
SA – 387 Grade 22/A 335 Grade P22 or similar. The weld metal has the extra-low impurity levels specified in step-cooling requirements.
Classifications: | SFA/AWS A5.5:E9018-B3, EN ISO 3580-A:E CrMo2 B 32 H5 |
Approvals: | CE EN 13479, Seproz UNA 272580, NAKS/HAKC 2.5-5.0 mm, VdTÜV 10732 |
Approvals are based on factory location. Please contact ESAB for more information.
Welding Current: | AC, DC+ |
Diffusible Hydrogen: | < 5.0 ml/100g |
Alloy Type: | Cr-Mo |
Coating Type: | Lime Basic |
Typical Tensile Properties | |||
Condition | Yield Strength | Tensile Strength | Elongation |
ISO | |||
PWHT 690°C 4h | 520 MPa | 610 MPa | 21 % |
Typical Charpy V-Notch Properties | ||
Condition | Testing Temperature | Impact Value |
ISO | ||
PWHT 690°C 4h | 20 °C | 170 J |
PWHT 690°C 4h | -20 °C | 140 J |
Typical Weld Metal Analysis % | ||||
C | Mn | Si | Cr | Mo |
0.07 | 0.69 | 0.23 | 2.17 | 1.10 |
Deposition Data | ||||||
Diameter | Current | Voltage | kg weld metal/ kg electrodes | Number of electrodes/kg weld metal | Fusion time per electrode at 90% I max | Deposition rate 90% I max |
2.5 x 350 mm | 60-85 A | 21 V | 0.63 | 70 | 68 s | 0.76 kg/h |
3.2 x 350 mm | 90-130 A | 23 V | 0.60 | 49 | 66 s | 1.11 kg/h |
4.0 x 450 mm | 130-190 A | 25 V | 0.61 | 23 | 83 s | 1.90 kg/h |
5.0 x 450 mm | 150-260 A | 27 V | 0.62 | 15 | 92 s | 2.60 kg/h |
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