Titanium and Ti alloys, Ti powders
01
Description
Recently, the company has been actively implementing new technical solutions for gas atomizing, which significantly improve the morphology of particles, reduce the number of satellites, and increase the fluidity of powders and the quality of weld coatings.
Atomized powders produced by JSC POLEMA are classified into two groups: powders for coatings and structural powders.
The first group includes over 200 types of powders for coatings using various methods, including self-fluxing nickel, iron, and copper alloys, tool steels, high-carbon and low-carbon steels and alloys, corrosion-resistant and heat-resistant steels and alloys, as well as tin- and zinc-based composite powders and alloys.
The variety of available powders for coatings, used in high-speed, detonation, gas-flame, and plasma spraying, gas-powder, plasma, induction, and laser welding, allows to solve specific problems of surface hardening and effective protection against wear and corrosion of machines and equipment parts operating under elevated temperatures, high mechanical stress, and with abrasive substances and in aggressive environments.
The second group includes structural powders, such as pressed powders of pure metals (chromium, molybdenum, tungsten, nickel, and titanium), copper-based alloys (bronze and brass), stainless steels, special alloys with high magnetic permeability (permalloys), and materials for shot jet processing of parts (tool steels).
Powders of this group are used for making sheet rolled products, bars, and non-ferrous and refractory metal forgings, tools, sintered and deformed parts, composite materials used in electrical engineering, electronics, tool engineering, machine engineering, aerospace industry, nuclear power engineering, vehicles, filters, gas absorbers, and other engineering areas.
02
specifications
POLEMA has produced titanium powder by reducing titanium oxide with calcium hydride – a method developed in the 50s of the last century at the PMI FGUP named after I.P. Bardin. The choice of calcium hydride as the reducer is explained by calcium's high activity, which allows it to reduce almost all metal and non-metal oxides regardless of their thermodynamic activity. At the same time, solid solutions and chemical compounds of calcium with reduced metals are not formed.
Titanium powders reduced with calcium hydride have an irregular form and extended particle surface, thanks to which it shapes very well in a steel die mould at relatively low pressures, as well as hydrostatic shaping in elastic membranes. The powders roll well into bands and are sintered in a vacuum or a neutral atmosphere. Titanium powders and titanium-based alloys are used in the manufacture of corrosion-resistant fine filters for industrial liquids in the form of porous rolled products, in medicine for the manufacture of implants, in the food industry for making regenerating filters used in systems for purifying drinking and mineral waters, juices and other beverages; in production of highly dependable pyrotechnical substances and porous bulk getters (gas absorbers) with high sorption capacity and sorption rate, as well as for the manufacture of composites with aluminum and other metals, parts of watch mechanisms and acid-resistant equipment. The powders are also used for plasma and microplasma coating applications.
Particle size, bulk density and compactibility of powders
* Average values (reference data)
Specifications (TS) establish the bulk density norm for RP-Ti grade K powder: 0.6-1.0 g/cm3 and the standardized granulometric composition for the powder RP-Ti grade M (A): +280 microns - 0.0%, +100 microns ≤ 1.0%, +45 microns – 15-40% (+40 microns – 25-50%), -45 (40) microns – the rest.
At the client's request, other requirements are possible for the chemical and granulometric compositions. In particular, for plasma coating deposition, a titanium product is produced with fractions of 40-100, 40-140, and 63-160 microns.
RP-Ti51Zr49 Alloy Powder:
The particle size of the powder (main fraction) is less than 100 microns.
Other requirements for the chemical composition and particle size of the powder may be established in consultation with the customer.
RP-Ti70V30 Alloy Powder:
The particle size of the powder (main fraction) is less than 100 microns.
Other powder alloys with titanium:
RP-Ni55Ti45, RP-Ti88Ni12, RP-Ti65Al35
Powders of this class are mainly used for coating and manufacturing parts by the PM method.
Titanium powders reduced with calcium hydride have an irregular form and extended particle surface, thanks to which it shapes very well in a steel die mould at relatively low pressures, as well as hydrostatic shaping in elastic membranes. The powders roll well into bands and are sintered in a vacuum or a neutral atmosphere. Titanium powders and titanium-based alloys are used in the manufacture of corrosion-resistant fine filters for industrial liquids in the form of porous rolled products, in medicine for the manufacture of implants, in the food industry for making regenerating filters used in systems for purifying drinking and mineral waters, juices and other beverages; in production of highly dependable pyrotechnical substances and porous bulk getters (gas absorbers) with high sorption capacity and sorption rate, as well as for the manufacture of composites with aluminum and other metals, parts of watch mechanisms and acid-resistant equipment. The powders are also used for plasma and microplasma coating applications.
Particle size, bulk density and compactibility of powders
| Grade | Granulometric composition, mass %, by fraction, micron | Bulk density, g/cm3 * | Compactibility, g/cm3, at a pressure of MPа * | ||||
| +280 | +100 | +45(40) | -45(40) | 200 | 600 | ||
|
RP-Ti grade K |
≤ 5,0 | Balance (the rest) | ≤ 10 | 0,89 | 2,70 | 3,50 | |
| RP-Ti grade S | ≤ 1,0 | not defined | ≥ 25 (35) | Balance | 1,15 | 2,60 | 3,24 |
| RP-Ti grade M | 0,0 | ≤ 2,0 | ≥ 15(25) | Balance | 1,02 | 2,44 | 3,35 |
| RP-Ti grade OM | 0,0 | ≤ 1,0 | ≤ 5,0 (5,0) | Balance | 1,36 | 2,72 | 3,48 |
* Average values (reference data)
Specifications (TS) establish the bulk density norm for RP-Ti grade K powder: 0.6-1.0 g/cm3 and the standardized granulometric composition for the powder RP-Ti grade M (A): +280 microns - 0.0%, +100 microns ≤ 1.0%, +45 microns – 15-40% (+40 microns – 25-50%), -45 (40) microns – the rest.
At the client's request, other requirements are possible for the chemical and granulometric compositions. In particular, for plasma coating deposition, a titanium product is produced with fractions of 40-100, 40-140, and 63-160 microns.
RP-Ti51Zr49 Alloy Powder:
The particle size of the powder (main fraction) is less than 100 microns.
Other requirements for the chemical composition and particle size of the powder may be established in consultation with the customer.
RP-Ti70V30 Alloy Powder:
The particle size of the powder (main fraction) is less than 100 microns.
Other powder alloys with titanium:
RP-Ni55Ti45, RP-Ti88Ni12, RP-Ti65Al35
Powders of this class are mainly used for coating and manufacturing parts by the PM method.
03
advantages
—
The highly developed surface of powder particles provides unique physico-chemical properties of materials and products made from them for use in various fields of engineering, medicine and the food industry as filters, sorption pumps (gas absorbers), pyrotechnic systems, implants and composites.
—
Excellent compressibility of powders
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High structural homogeneity of powdered alloys and intermetallides with titanium
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Profound production experience
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Strict quality control of all produced materials
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In-house research laboratory
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Flexible discount system
04
Product names
JSC POLEMA produces:
You can contact our sales managers for more details at:
export_polema@metholding.com,
tel.: +7(4872)25-06-76.
- Titanium powders: RP-Ti grade K-1; RP-Ti grade K-2; RP-Ti grade S-1; RP-Ti grade S-2; RP-Ti grade M-1; RP-Ti grade M-2; RP-Ti grade M(А)-2; RP-Ti grade OM-1; RP-Ti grade OM-2;
- RP-Ti51Zr49 Alloy Powder;
- RP-Ti70V30 Alloy Powder;
- Other powder alloys with titanium: RP-Ni55Ti45, RP-Ti88Ni12, RP-Ti65Al35.
You can contact our sales managers for more details at:
export_polema@metholding.com,
tel.: +7(4872)25-06-76.
05
chemical composition
Grades and chemical composition:
Chemical composition of powder RP-Ti51Zr49:
Chemical composition of Ti70V30 alloy powder and its bulk density:
| Grade | Ti | Impurites, mass %, max | |||||
| N | C | H | Fe+Ni | Si | Cl | ||
| RP-Ti grade K-1 | base | 0,07 | 0,05 | 0,35 | 0,35 | 0,10 | 0,003 |
| RP-Ti grade K-2 | base | 0,20 | 0,05 | 0,35 | 0,35 | 1,00 | 0,003 |
| RP-Ti grade S-1 | base | 0,08 | 0,05 | 0,35 | 0,40 | 0,10 | 0,004 |
| RP-Ti grade S-2 |
|
0,20 | 0,05 | 0,35 | 0,40 | 1,00 | 0,004 |
| RP-Ti grade M-1 | base | 0,08 | 0,05 | 0,35 | 0,40 | 0,10 | 0,004 |
|
RP-Ti grade M-2 RP-Ti grade M(A)-2 |
base | 0,08 | 0,05 | 0,35 | 0,40 | 0,10 | 0,004 |
| RP-Ti grade OM-1 | base | 0,08 | 0,05 | 0,40 | 0,40 | 0,10 | 0,004 |
| RP-Ti grade OM-2 | base | 0,20 | 0,05 | 0,40 | 0,40 | 1,00 | 0,004 |
Chemical composition of powder RP-Ti51Zr49:
| Ti | Zr | Impurites, mass %, max | |||||||
| C | N | O | Ni | Mg | Fe | Si | Al | ||
| 50,5-53,0 | balance | 0,10 | 0,10 | 0,50 | 0,14 | 0,014 | 0,10 | 0,10 | 0,10 |
Chemical composition of Ti70V30 alloy powder and its bulk density:
| Grade | Mass fraction of elements, % | Impurites, mass %, max |
Bulk density, g/cm3, max |
|||||
| Ti | V | N | C | H | Ca | O | ||
| Ti70V30 |
65 max |
25-32 | 0,30 | 0,10 | 0,60 | 0,20 | 0,50 |
1,2 |
06
miscellaneous
According to the agreed wishes of the customers, the powders are manufactured with different particle sizes.
In agreement with the customer, other requirements for chemical and granulometric compositions are allowed. In particular, titanium powder of fractions 40-100, 40-140, 63-160 microns is produced for plasma spraying of coatings.
07
Application areas