EA – 400/10U
Permissible spatial positions during welding
EA – 400/10U Welding Electrodes
Electrodes for welding high-alloy steels
Prices for welding electrodes
Type of coverage
Basic. (Low-hydrogen B).
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
12.0 g/ah
Consumption of electrodes
~ 1.8 kg per 1 kg of deposited metal
Application Area. EA – 400/10U Welding Electrodes.
For welding structures made of corrosion-resistant austenitic class steels of grades 08Kh18N10T, 12Kh18N10T, 10Kh17N13M2T and similar, when requirements for resistance to intercrystalline corrosion are imposed on the weld metal and operating in liquid aggressive non-oxidizing environments at temperatures up to 350°C and not subject to heat treatment after welding, as well as for surfacing the second layer on the surface of a pearlitic class product.
Welding in all spatial positions except vertical “top-to-bottom”, with direct current of reverse polarity.
Welding Technique. EA – 400/10U Welding Electrodes.
Before welding, the surfaces to be welded must be cleaned to a metallic shine. If the permissible moisture content in the coating (0.3%) is exceeded, the electrodes must be additionally baked before use at a temperature of 280-300°C for 40 minutes.
Regulatory Documents. EA – 400/10U Welding Electrodes.
GOST 9466-75, E – 10Kh5MF
Corresponding International Standard.
E – 2453 – B20
Main Weldable Materials. EA – 400/10U Welding Electrodes.
Welding of corrosion-resistant molybdenum-containing austenitic steels of grades 08Kh18N10T, 12Kh18N10T, 10Kh17N13M2T and similar. For structures operating in liquid aggressive non-oxidizing environments at temperatures up to 350°C, where resistance to intercrystalline corrosion is mandatory.
Special Properties. EA – 400/10U Welding Electrodes.
EA-400/10U electrodes ensure the production of weld metal resistant to intercrystalline corrosion. Welding is performed without subsequent heat treatment. The deposited metal has high resistance to hot cracking, with an austenitic-ferritic structure.
Chemical Composition of Deposited Metal, %
| Ni | Si | Mn | P | S | Cr | C | Mo | V | |
| Minimum | 9.00 | <0.60 | 1.10 | <0.030 | <0.020 | 16.80 | <0.10 | 2.00 | 0.30 |
| Maximum | 12.00 | <0.60 | 3.10 | <0.030 | <0.020 | 19.00 | <0.10 | 3.50 | 0.75 |
Welding Recommendations (Current, A)
| Diameter, mm | Weld Position | ||
| Flat | Vertical | Overhead | |
| 3.0 | 90-110 | 70-100 | 70-100 |
| 4.0 | 130-160 | 120-150 | 120-150 |
| 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
+375 (17) 388-28-03 sales department
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