EA – 395/9
Permissible spatial positions during welding
EA – 395/9 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). The no-load voltage is at least 65 V. Welding is performed in all spatial positions except vertical “top-down”.
Surfacing coefficient
10.5 – 12.0 g/ah
Consumption of electrodes
~ 1.6 kg per 1 kg of deposited metal
Application Area. EA – 395/9 Welding Electrodes.
Welding of various grades of heat-resistant chromium-nickel steels and alloys of the KhN35VT, Kh15N25AM6 type, etc., containing nickel up to 35%, but without the requirement for resistance to intercrystalline corrosion and operating at temperatures up to 700°C (not containing niobium).
As well as for welding joints of austenitic steels of the 08Kh18N10T, 10Kh17N13M2T, 20Kh23N13 type and similar with pearlitic steels of the 25G2S, 20KhGNM, 40KhFA type and similar. Welding in all spatial positions except vertical “top-to-bottom”, with direct current of reverse polarity.
Welding Technique. EA – 395/9 Welding Electrodes.
Welding should be performed with a very short arc; the surfaces of the parts must be thoroughly cleaned. If the permissible moisture content in the coating (0.3%) is exceeded, the electrodes must be additionally baked before use at a temperature of 280-330°C for 40-60 minutes.
Regulatory Documents. EA – 395/9 Welding Electrodes.
GOST 9466-75, E – 10Kh5MF
Corresponding International Standard.
E – 2453 – B20
Main Weldable Materials. EA – 395/9 Welding Electrodes.
1. Welding of dissimilar joints: austenitic steel + pearlitic steel. 2. Welding of heat-resistant steels and alloys of the KhN35VT, Kh15N25AM6 type (without Nb), operating at temperatures up to 700°C.
Chemical Composition of Deposited Metal, %
| Ni | Si | Mn | P | S | Cr | C | Mo | |
| Minimum | 20.00 | 0.35 | 1.20 | <0.030 | <0.020 | 13.50 | 0.08 | 4.50 |
| Maximum | 27.00 | 0.70 | 2.80 | <0.030 | <0.020 | 17.00 | 0.14 | 7.00 |
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
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