Rimamid is a high-strength polymer that is designed to replace bronze, brass, fluoroplastic, textolite, caprolon, sintered powders, ZAMAK, cast iron, stainless and other types of steel.
Different grades of Rimamid are classified by chemical composition and physical properties. To solve every specific task, it is recommended to select a certain grade of Rimamid, of which there are currently more than 70.
Laboratories of StartPlast SPA are continuously developing new types of Rimamid in accordance with the needs of our customers.
Compared to traditional materials Rimamid has many advantages, which are discussed below.
Due to its chemical formula and stable molecular bonds Rimamid has unique strength characteristics, which allows to use it as a substitute for metal parts in high-loaded assemblies.
Rimamid parts have the following advantages over their metal counterparts:
Low friction ratio and good antifriction properties of our material allow to extend the service life of the unit by more than 3 times, to increase efficiency and reduce the risks of the unit failure during oil starvation.Hide Read more
Specific gravity of Rimamid is 1.18 g/cm3, for comparison, it is 6.5 times less than specific gravity of steel or 7.5 times less than specific weight of bronze. Low specific weight of products from Rimamid facilitates transportation and installation.Hide Read more
Rimamid has high chemical resistance to various environments: water, synthetic and mineral oils (including with various additives), diesel fuel and gasoline, coolants, alcohols, weak acids solutions (except for some organic acids) and alkalies.Hide Read more
During grinding metal parts are subject to great wear, that leads to the appearance of abrasive particles, which getting into the oil, spreads through the mechanism and negatively affects all its parts.Hide Read more
Rimamid is supplied in rods, plates and other shapes for further machining. Rimamid castings can be made bespoke, including manufacture of large-sized parts.
Parts are made of them by means of machining on milling, turning, gear-cutting and other machines. Processing conditions of workpieces directly affect the cost of finished parts.
Low specific weight, high strength and reduced friction ratio result in the fact, that Rimamid parts serve several times longer, than parts made from caprolon, bronze or even steel. The ability to to dampen impact loads enables to preserve the performance of the assembly unit even in heavy duty conditions. Due to the low friction ratio, parts made of Rimamid wear out less than similar metal parts, and counter parts do not wear out either.Hide Read more
On codition that, quality standards are maintained, any customer is concerned about the cost of the finished product, not about the cost of the material from which it is made. Since Rimamid is 5-7 times lighter than metals, 5-7 times more parts from the same weight can be made. Alongside with this, almost always the main share in the cost of the finished product is not the material, but the cost of manufacture.Hide Read more
RIMAMID polymer material belongs to the class of polyamides and is made in the form of blanks (plate, rod, and other geometrical shapes) of various sizes for further mechanical processing on turning, milling and other processing machines.
The main advantage of this material is low friction ratio against steel, which provides an increase in the service life of parts in the friction unit by 3-4 times. When using RIMAMID material with the addition (or the application of coatings) of antifriction components (oil, molybdenum sulfide, graphite, etc.), friction ratio decreases and there is need to add the lubricant to the friction unit.
RIMAMID material is 6.8 times lighter than steel, 6.5-8 times lighter than bronze, almost 2 times lighter than fluoroplastic. Thus, the cost of RIMAMID blank is 9-10 times lower, than the cost of the similar bronze or fluoroplastic blank. Besides, lightness of the material reduces the time required for installation and replacement.
High wear resistance of the material (1.5 times more than that of textolite, 10 times more than that of bronze) and low friction ratio reduces noise level in sliding units, and also makes it possible to use such parts in dusty installation areas. In addition, this material is shock-resistant, which allows to maintain the efficiency of the unit at a critical moment.
|Melting point, °C||not set||not set||GOST 21553|
|Density, kg/m3||not set||not set||GOST 15139|
|Tensile stress at break, MPa||not set||not set||GOST 11262|
|Relative elongation at break, %||not set||not set||GOST 11262|
|Modulus of elongation, MPa||not set||not set||GOST 9550|
|Charpy no notch impact energy, kJ/m2 (20°C)||not set||not set||GOST 4647|
|Water absorption in 24 hours, %
|not set||not set||GOST 4650|
|Heat conductivity coefficient at room temperature, W/m⋅K||not set||not set||GOST 23630.2|
|Average linear thermal expansion coefficient per 1°С in temperature range: from -50°С to 0°С
from 0°С to 50°С
|not set||not set||GOST 15173|
|Shore D hardness||not set||not set||GOST 24621|
|Surface electrical resistivity, Ohm||not set||not set||GOST 6433.2|
|Specific volume electrical resistivity, Ohm⋅m||not set||not set||GOST 6433.2|
|Loss angle at 106 Hz frequency||not set||not set||GOST 22372|
|Dielectric constant at 106Hz||not set||not set||GOST 22372|
|Electric strength, kV/mm||not set||not set||GOST 6433.3|
|Dry friction coefficient against steel||not set||not set||GOST 11629|
|Lubricated friction coefficient against steel||not set||not set||GOST 11629|
|Percentage of extractable substances, %||not set||not set||GOST 17824|