OK 74.78
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รายละเอียดสินค้า
OK 74.78
| Classifications | SFA/AWS A5.5 : E9018-D1 EN ISO 18275-A : E 55 4 MnMo B 3 2 H5 |
| Approvals | ABS : 3YQ460 H5 CE : EN 13479 DB : 82.039.02 DNV-GL : 3 Y46H5 VdTÜV : 01027 |
Approvals are based on factory location. Please contact ESAB for more information.
| Welding Current | AC, DC+ |
| Diffusible Hydrogen | < 5.0 ml/100g |
| Alloy Type | Low alloyed (0.4 % Mo) |
| Coating Type | Basic covering |
Typical Tensile Properties
| Condition | Yield Strength | Tensile Strength | Elongation |
| ISO | |||
| As welded | 600 MPa | 650 MPa | 24 % |
Typical Charpy V-Notch Properties
| Testing Condition | Testing Temp | Impact Value |
| ISO | ||
| As Welded | -40 °C | 90 J |
| As Welded | -50 °C | 70 J |
Typical Weld Metal Analysis %
| C | Mn | Si | Ni | Cr | Mo |
| 0.05 | 1.6 | 0.35 | 0.03 | 0.03 | 0.35 |
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 350.0 mm | 75-100 A | 22 V | 0.62 | 73.0 | 55 s | 0.90 kg/h |
| 3.2 x 450.0 mm | 105-140 A | 23 V | 0.65 | 32.0 | 86 s | 1.30 kg/h |
| 4.0 x 450.0 mm | 140-190 A | 23 V | 0.65 | 20.5 | 97 s | 1.80 kg/h |
| 5.0 x 450.0 mm | 190-260 A | 24 V | 0.68 | 14.0 | 100 s | 2.60 kg/h |
| 6.0 x 450.0 mm | 240-340 A | 24 V | 0.69 | 10 | 103 s | 3.60 kg/h |
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