COATING TYPE - Basic
| EN ISO 3581-A-Е 18 8 Mn B 2 2 | AWS А 5.4:Е307-15 |
Special properties:
- deposited metal is characterized by high heat resistance up to 850 C.
- deposition rate factor: 13,0…13,5 g/А·hour;
- consumption of electrodes per 1 kg of deposited metal: 1,3…1,5 kg.
PURPOSE AND SCOPE OF APPLICATION
Monolith М-307 is a universal austenite electrode which designed for a variety of applications such as welding of "difficult-to-weld" steels, dissimilar welding, repair and maintenance, as well as deposition of transition layers before the application of wear-resistant layers. The metal deposited by the electrodes Monolith М-307 provides exceptionally high ductility and elongation along with excellent crack resistance. Good resistance to embrittlement at operating temperatures of up to 650ºC.
Terms of use:
- they are used for welding in all spatial positions, except vertical down one with direct current of reverse polarity (+ on electrode).
Re-drying before welding:
- the permissible moisture content in the coating before use is not more than 0,3 %;
- if the electrode coating is moistened above normal, dry for 60 minutes at 280-300°С.
WELD METAL CHEMICAL COMPOSITION, %
| Mn | Si | C | P | S | Cr | Ni |
| 6,0-7,0 | 0,6-0,9 | 0,05-0,14 | ≤ 0,030 | ≤ 0,010 | 18,0-19,5 | 8,0-9,5 |
WELD METAL MECHANICAL PROPERTIES
| Tensile Strength, MPa | Yield Strength, MPa | Elongation, % | Impact energy KV 20˚С, J |
| ≥500 | ≥350 | ≥25 | ≥70 |
PACKAGING DATA / WELDING PARAMETERS
| Diameter, mm | Length, mm | Welding current strength, A | Number of electrodes in a pack, pcs. | Pack weight, kg |
| 2,5 | 350 | 70 - 110 | 53...55 | 1,0 |
| 3,0 | 350 | 80 - 120 | 37...39 | 1,0 |
| 3,2 | 350 | 100 - 140 | 34...36 | 1,0 |
| 4,0 | 350 | 120 - 160 | 20...22 | 1,0 |
Welding should be carried out with direct current of the reverse polarity, "+" on the electrode with an arc voltage of 23…27 V or with alternating current from a transformer with an idle voltage of 50 V.
WELDING POSITIONS
ISO 6947
