OK B3 SC
OK B3 SC is a basic AC/DC electrode designed for welding of creep resistant 2,25% Cr 1% Mo alloyed steels, SA-387 Grade 22, A335 Grade P22 or similar materials when highest toughness values are required also after step cooling treatment. Very low level of impurity elements providing a X-bar max. 10 for temper embrittlement resistant applications. Usually welding is followed by a PWHT. Suitable for refinery, petrochemical and chemical industries, power generation, pressure vessels, etc.
Typical Charpy V-Notch Properties
| pwht aws | ||||
| 1 hr | ||||
| 4 hr | ||||
| 32 hr | ||||
Typical Tensile Properties
| Condition | PWHT | PWHT | PWHT | PWHT |
| Test Temp. 454°C | ||||
| Shielding Gas | AWS | AWS | AWS | AWS |
| Tensile Strength | 650 MPa (94 ksi) | 650 MPa (94 ksi) | 580 MPa (84 ksi) | 455 MPa (66 ksi) |
| Yield Strength | 550 MPa (80 ksi) | 540 MPa (78 ksi) | 460 MPa (67 ksi) | 370 MPa (54 ksi) |
| Elongation | 23 % | 25 % | 27 % | 18 % |
| Testing Time | 1 hr | 4 hr | 32 hr | 32 hr |
| Testing Temperature | 690 degC (1274 degF) | 690 degC (1274 degF) | 690 degC (1274 degF) | 690 degC (1274 degF) |
Deposition Data
| Current | Deposition Rate @ 90% I max | Diameter | Deposition Efficiency (%) | Number of electrodes/kg weld metal | Voltage | |
| 60-95 A | 63 sec | 0.8 kg/h (1,8 lb/h) | 2.5 x 350.0 mm (0.098 x 13,8 in.) | 60 % | 75 | 23 V |
| 75-145 A | 62 sec | 1.2 kg/h (2,6 lb/h) | 3.2 x 350.0 mm (1/8 x 13,8 in.) | 60 % | 48 | 23 V |
| 100-200 A | 86 sec | 1.7 kg/h (3,7 lb/h) | 4.0 x 450.0 mm (5/32 x 17,7 in.) | 58 % | 25 | 26 V |
| 115-260 A | 106 sec | 2.3 kg/h (5,1 lb/h) | 5.0 x 450.0 mm (0.197 x 17,7 in.) | 63 % | 15 | 25 V |
Classifications
| Weld Metal |
SFA/AWS A5.5 : E9018-B3 H4 R EN ISO 3580-A : E CrMo2 B 32 H5 |
Approvals
| Approvals |
CE EN 13479 VdTÜV 19612 |
| Approvals are based on factory location. Please contact ESAB for more information. |
Consumable Characteristics
| Alloy Type | Low alloyed (2.25% Cr ; 1% Mo) |
| Coating Type | Basic covering |
| Diffusible Hydrogen | < 4.0 ml/100g |
| Welding Current | DC+-, AC |
Typical Weld Metal Analysis %
| Typical Weld Metal Analysis % | ||||||||||||||||||||||
| Al | As | B | C | Cr | Cu | J-Factor | Mn | Mn+Si | Mo | Nb | Nb+Ti+V | Ni | P | P+Sn | PE | S | Sb | Si | Sn | Ti | V | X-bar |
| 0.002 % | 0.002 % | 0.0002 % | 0.085 % | 2.35 % | 0.04 % | 70 % | 0.7 % | 0.9 % | 1 % | 0.004 % | 0.018 % | 0.04 % | 0.005 % | 0.009 % | 2.7 % | 0.004 % | 0.001 % | 0.20 % | 0.004 % | 0.007 % | 0.007 % | 7 % |
Part Numbers and Accessories
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