23.12/2022
Merry Christmas and Happy New Year 2023!
27.06/2022
POLEMA’s QMS confirmed its compliance with ISO 9001:20015
POLEMA JSC confirmed the compliance of the current QMS with the requirements of ISO 9001:2015.
03.06/2011
Progressive materials for multi-functional vacuum coatings
Application fields of materials for multi-functional vacuum coatings, characteristics of sputtering targets and evaporable sources used for technologies of physical deposition of hardening, protective, decorative and light-reflecting coatings, resistive, switching and transparent electro conductive films.
24.05/2011
Molybdenum and tungsten products for production of leucosapphires
POLEMA JSC is the leading global manufacturer of chromium, molybdenum, tungsten products, metal powders and composite materials.
Brazing alloys
For capillary brazing, the company produces a wide range of powder brazing alloys that are used in electric engineering, electronics, the tool-making industry, aviation motor-building, the thermal power industry, mechanical engineering, and other fields.
The use of powder brazing alloys reduces the labor intensity of the technical process of brazing, and makes it possible to accurately dispense material, mechanize brazing operations, and introduce radically new structural and engineering solutions.
JSC POLEMA is open to developing partnerships in this field, and to creating and adapting industrial production of new grades and forms of highly effective brazing alloys.
POLEMA powder brazing-ready alloys are classified into groups based on chemical composition and technological properties:
Grade | Brazing temp, °C | Weld strength, MPa | Field of application |
AP-CuMn32Ni8Si3 |
1000 | 300-350 |
Brazing with flux agents 200 or 201, 209 carbonic and alloyed structural steels and cast iron |
AP-CuMn25SiNiB |
900 | 250-300 | Brazing with flux agent 209 for steels, and flux agent FPSN-2 for cast iron |
AP-CuMn24Ni5 (VPr-2) |
1000-1040 | 280-360 | Brazing alloy with increased heat-resistance and resistance to corrosion. Brazing of heat exchange units made from heat- and corrosion-resistant steels and alloys |
AP-CuMn29Ni29Co5SiB (VPr-2) |
1000-1050 | 350 | Brazing of thin-walled structures and stainless steels (12Cr18Ni10Ti steel) and alloys. Increased corrosion resistance |
AP-Ni58B |
1080-1100 | 400-470 | Vacuum brazing of high-strength stainless steels and nickel alloys and thin-wall structures |
AP-NiMn18CrMoCu |
1120 | σcp 220 | Argon or vacuum brazing of stainless steels and heat-resistant alloys operating at high temperatures |
AP-NiMn34Co10 |
1160 | 450-520 | Argon or vacuum brazing of thin-walled structures made of stainless steels and heat-resistant alloys |
AP-FeMn32Ni12Cu12SiB |
1200 | 350-400 | Brazing of pipes joints in steel gas main pipelines |
P-Cr13Ni69Si7B |
1200 | 280-300 | Argon brazing of corrosion-resistant and heat-resistant steels. Joint strength at 800 °C is 200 MPa |
P-Cr10Ni64Mo15Si7B (6MA) |
1200 | 320-340 | Argon brazing of corrosion-resistant and heat-resistant steels. Unbrazing temperature is 1230 °C |
P-CuSn5P7 P-CuSn5P7-P |
700-720 | 180-200 | Brazing of copper and copper alloys with the brazing agent PV-209. Substitute for high-silver brazing alloys PSr25, PSr45. P-CuSn5P7-P is an extrudable modification of this brazing alloy |
P-NiMn18CrMoCu |
960-970 | σcp 400 | Brazing of titanium and titanium alloys. Temperature of extended operation is 400 °C |
P-Ti44Zr24Cu16Ni16 |
880-980 | σcp 400 | Brazing of titanium and titanium alloys. Temperature of extended operation is 400 °C |
P-Fe60NiCrB | 1185 | σcp 400 | Brazing of a compound tool made from rapid machining steel in molten BaCl2 salt while tempering a cutting edge |
P-Cu53Zn21MnNi |
950-1000 | 260-300 | Brazing with brazing agents F-1, PV200 of hard alloys of the type W-Co with steel |
P-Cu76Sn9Zn9Ni (P102) |
940-960 | 260-300 | Brazing of brittle grades of hard alloys |
P-Cu63Zn (PAN-212) |
1015 | - | A mixture of a brazing alloy with a brazing agent. Brazing of tools made from hard alloys of the types W-Co, Ti-W-Co |
P-NiCr9FeSiB (VPr11-40N) |
1100-1120 | - | Self-fluxing structural brazing agent for brazing corrosion-resistant steels and alloys in motor-building, and vacuum or argon brazing of segments of turbine blades |