D547Mo hardfacing welding electrode
Contact Info
- Address:河北省邢臺(tái)市信都區(qū)永康街533號(hào), Zip:
- Contact: 韓吉英
- Tel:13833921539
- Email:2891465062@qq.com
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D547Mo Hardfacing Electrode
GB/T 984 EDCrNi-B-15
Suitable for hardfacing sealing surfaces of high-pressure valves operating below 600°C.
A low-hydrogen sodium-type CrNiSiMo valve hardfacing electrode. The deposited metal exhibits excellent high-temperature resistance to scuffing, erosion, and impact, with high elevated-temperature hardness, good thermal stability, and fatigue resistance. The deposited metal shows significant age-hardening effects; hardness and scuffing resistance further improve with extended aging time.
Direct current reverse polarity (DC+)
Chemical Composition of Deposited Metal (%)
| Test Item | C | Mn | Si | Cr | Ni | Mo | Nb | S | P | Total Other Elements |
| GB/T Standard | ≤0.18 | 0.60～5.00 | 3.80～6.50 | 14.00～21.00 | 6.50～12.00 | 3.50～7.00 | 0.50～1.20 | ≤0.030 | ≤0.040 | ≤2.50 |
| Example Value | 0.060 | 1.45 | 5.60 | 15.50 | 10.35 | 4.50 | 0.90 | 0.005 | 0.020 | —— |
Hardness of Deposited Metal
| Test Item | HRC (4 layers or more) |
| GB/T Standard | ≥37 |
Reference Current
| Electrode Diameter (mm) | Φ3.2 | Φ4.0 | Φ5.0 |
| Welding Current (A) | 80～120 | 120～160 | 160～200 |
1. Drying requirement: Electrodes must be baked at 300°C for 1 hour before use and used while still warm.
2. Preheat large workpieces, deep-hole small-bore stop valve bodies, or other steel components to a certain temperature before hardfacing, and allow slow cooling after welding.
3. Apply 3 to 4 continuous layers without interruption during hardfacing. The machined hardfacing layer thickness should be no less than 5 mm to ensure stable hardness and chemical composition. Avoid excessive thickness to prevent cracking.
| Industry Category: | Hardware & Tools/Welding Materials & Accessories/Welding Rods |
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