AWS: ENiCrFe-7 WELDING ELECTRODES
Product data sheet / Overview: (Alloys 690)
ENiCrFe-7 is a nickel-chromium-iron electrode widely used for welding nickel-chromium-iron alloys (Inconel 690 for example) due to its exceptional properties:
- All-Position Welding : Capable of welding in various positions (flat, horizontal, vertical, overhead).
- Excellent Corrosion Resistance : Offers superior resistance to various corrosive environments.
- High-Temperature Strength : Maintains good strength at elevated temperatures.
- Improved Stress-Corrosion Cracking Resistance : Low carbon content and absence of sigma phase minimize susceptibility to stress-corrosion cracking.
Specifications
- American Welding Society (AWS) Classification: ENiCrFe-7
- Conforms to standards(typical) :AWS A5.11, ASME SFA 5.11, EN ISO 18274 (depending on manufacturer)
Chemical Composition (%)
Element | Typical % |
---|---|
Nickel (Ni) | 53-57 |
Chromium (Cr) | 27-30 |
Iron (Fe) | 8-12 |
Manganese (Mn) | 2-4 |
Columbium + Tantalum (Nb + Ta) | 1-3 |
Carbon (C) | ≤ 0.04 |
Other elements (depending on manufacturer): Silicon (Si), Sulfur (S)
Note: The specific composition may vary slightly depending on the manufacturer.
Mechanical Properties
- Yield Strength (MPa):: Refer to manufacturer's datasheet for specific values (typical range: 450-600 MPa).
- Tensile Strength (MPa): Refer to manufacturer's datasheet for specific values (typical range: 550-750 MPa).
- Elongation (%): Refer to manufacturer's datasheet for specific values (typical range: 25-40%).
- Impact Strength(J): Data typically available at room temperature (20°C) and may be specified in Charpy V-notch impact values. Refer to manufacturer's datasheet for details.
Applications
- Welding nickel-chromium-iron alloys (like Inconel 690) to themselves.
- Dissimilar welding of nickel-chromium-iron alloys with steels or stainless steels.
- Applications requiring excellent corrosion resistance and high-temperature strength.
- Nuclear power components (due to good resistance to stress-corrosion cracking).
- Chemical processing equipment.
- Heat exchangers.
- Exhaust systems.
Storage and Handling
- Maintain a dry storage environment, free from moisture and contaminants.
- Adhere to the recommended storage temperature as specified by the manufacturer (typically cool and dry place).
- Follow proper handling procedures to prevent damage to the electrode coating.
Safety Precautions
- Welding fumes and gases can be hazardous. Utilize proper ventilation and wear appropriate Personal Protective Equipment (PPE) including a welding helmet, respirator, gloves, and flame-retardant clothing.
- ENiCrFe-7 electrodes can be sharp. Handle with care to avoid cuts.
- Always follow safety guidelines established by AWS.
Manufacturers
- ESAB
- Special Metals
- Bohler/ UTP
- Daiko
- Selectarc
Product Name
Brand | Product Name |
---|---|
Special Metals | INCONEL Welding Electrode 152 |
BOHLER | Thermanit 690 |
D&H | D&H 1217(NS) |
DAIKO | DAIKO 152 |
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ENiCrFe-7 Alloys 690 welding electrode (SMAW) supplier in Dubai, Abu Dhabi, Sharjah, Al Ain, Rak, Fujairah UAE, Oman, Saudi Arabia (KSA), Qatar, Kuwait & Bahrain