KH-50N-4
Type of coating: Lime titania type
Weld metal is martensite structure with 13%Cr.
KUANG TAI METAL INDUSTRIAL CO., LTD.
廣泰金屬工業股份有限公司
No.20, Gongye Rd., Erzhen, Guantian Dist.
Tainan City 72042, Taiwan
TEL：886-6-6987615 FAX：886-6-6987315
▎Classification
| AWS A5.13/A5.13M | – |
| JIS Z3251 | DF4B-450-BR |
| EN 14700 | E Fe7 |
| GB T984 | – |
▎Applications and Features
- Weld metal is martensite structure with 13%Cr.
- It provides excellent hardness, toughness, corrosion, heat and crack resistance.
- It is suitable for repairing turbines impeller, heat exchanger brackets, valve brackets and molds.
Turbine impeller
▎Welding Position
▎Welding Instruction
- Dry the electrodes at 200-250°C for 30-60 minutes before use.
- Clean up the contaminations on the work piece.
- Preheat temperature should be above 150°C for repairing low alloy steel or medium/high carbon steel.
▎Applications
It is suitable for repairing turbines impeller, heat exchanger brackets, valve brackets and molds.
▎Typical Chemical Composition of Weld Metal (wt.%)
| C | Si | Mn | Cr | Ni | Mo |
| 0.08 | 0.31 | 0.60 | 12.78 | 3.70 | 1.20 |
▎Typical Hardness of Weld Metal
| Condition | Vicker’s hardness (HV) | Rockwell’s hardness (HRC) | Shore’s hardness (HS) |
| Interpass temp. ≤150°C | 452 | 45 | 60 |
▎Size and Suggested Operating Range (AC or DC+)
| Diameter x Length(mm) | 3.2×350 | 4.0×350 | 5.0×350 | 6.0×400 |
| Amp | 70-120 | 100-170 | 160-220 | 200-280 |
▎Certification
JISZ3323_TCTW08007