NIAT -1
Permissible spatial positions during welding
NIAT -1 Welding Electrodes
Electrodes for welding high-alloy steels
Prices for welding electrodes
Type of coverage
Rutilovo is the main one. It provides stable arc burning, good seam formation and easy separation of the slag crust.
Current and polarity
Direct current of reverse polarity (DC +, “plus” on the electrode). Welding is performed in all spatial positions except vertical “top-down”.
Surfacing coefficient
9.0 – 10.0 g/ah
Consumption of electrodes
~ 1.6 kg per 1 kg of deposited metal
Weld Structure. NIAT – 1 Welding Electrodes.
Austenitic-ferritic, ferrite phase content ~4.9% (optimal for crack resistance).
Application Area. NIAT – 1 Welding Electrodes.
Welding of critical equipment made of various steels of the austenitic class, grades such as 08Kh18N10, 12Kh18N10T, 10Kh17N13M2T, and similar grades. Welding is performed with direct current of reverse polarity, in all spatial positions except vertical top-to-bottom.
Welding Technique. NIAT – 1 Welding Electrodes.
Welding with NIAT-1 electrodes is performed with a short arc using direct current of reverse polarity (DC+, “plus” on the electrode). Welding is carried out in all spatial positions except vertical “top-to-bottom”. Electrodes with a diameter of 5.0 mm are not intended for welding in the overhead position.
Regulatory Documents. NIAT – 1 Welding Electrodes.
GOST 9466-75, GOST 9467-75.
Corresponding International Standard.
E – 2005 – RB20 (AISI 316L type)
Main Weldable Materials. NIAT – 1 Welding Electrodes.
Welding of austenitic corrosion-resistant steels of grades: 08Kh18N10, 12Kh18N10T, 10Kh17N13M2T and similar. Particularly effective for welding thin sheet metal in critical structures of chemical, food, and power equipment.
Chemical Composition of Deposited Metal, %
| C | Si | Mn | P | S | Ni | Mo | Cr | |
| Minimum | 0.05 | < 1.10 | 0.80 | <0.030 | <0.020 | 7.20 | 1.40 | 15.50 |
| Maximum | 0.12 | < 1.10 | 2.00 | <0.030 | <0.020 | 10.00 | 2.50 | 19.50 |
Welding Recommendations (Current, A)
| Diameter, mm | Weld Position | ||
| Flat | Vertical | Overhead | |
| 3.0 | 90-130 | 80-110 | 80-110 |
| 4.0 | 140-160 | 130-150 | 130-150 |
| 5.0 | 180-220 | 170-200 | not recommended |
We respond quickly to questions on Telegram
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Bottom horizontal or in a boat
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Bottom to the corner
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Horizontal seam on a vertical plane
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Vertical seam for lifting
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Vertical seam for descent
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Ceiling seam
All covered electrodes are sensitive to moisture absorption. Excessive moisture content in the coating can lead to porosity or hydrogen cracking.
However, if the climatic storage conditions meet the following requirements, moisture absorption by the electrodes is minimal:
• 5–15°C at a maximum relative humidity of 60%
• 15–25°C at a maximum relative humidity of 50%
• >25°C at a maximum relative humidity of 40%
At lower temperatures, maintaining the storage temperature 10°C above the ambient temperature is sufficient to achieve the required moisture content level. Cold packages must be allowed to warm up to ambient temperature before opening.
At higher temperatures, the required moisture content in the air can be achieved by dehumidification. The shelf life of electrodes under the above conditions shall not exceed three years.
• Covered electrodes with a basic coating and low hydrogen content must be baked prior to each use whenever requirements regarding the content of diffusible hydrogen and/or the soundness of the deposited metal are specified.
• Stainless steel electrodes with a basic coating may produce porosity during welding if the humidity levels during their storage did not meet the requirements. To restore their original properties, they also need to be baked.
• Electrodes for welding carbon steels with a cellulosic or rutile coating typically do not require baking.
• Electrodes that have suffered serious damage due to exposure to moisture cannot be restored by rebaking and must be rejected.
Contacts
Company phone numbers:
+375 (29) 688-27-06
+375 (17) 388-28-02 accountant
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