Rhodium Rd99,8

Designation

Name The value
Designation GOST Cyrillic Рд99,8
Designation GOST Latin Pd99,8
Transliteration Rd998
By chemical elements -

Description

Rhodium Rd99,8 is used: for the manufacture of flat products, wire, technical products, crucibles used in instrumentation and other industries and research organizations; application of protective coatings (rhodium).

Note

Rhodium is not soluble in acid and boiling Aqua Regia.
The pressure treatment is conducted at 1200 °C — 1400 °C.
Rhodium coatings have good reflectivity, high hardness, heat (up to 430 °C) and chemical resistance.

Standards

Name Code Standards
Non-ferrous metals, including rare, and their alloys В51 GOST 13098-2006
Sheets and strips В53 GOST 24718-81

Chemical composition

Standard Si Fe Pb Ba Au Rh
GOST 13098-2006 ≤0.03 ≤0.02 ≤0.01 ≤0.008 ≤0.01 ≥99.8
Rh is the basis.
According to GOST 13098-2006, the total content of platinum, palladium, iridium and ruthenium should be ≤ 0.150%. The sum of all impurities, as well as the admixtures of nickel, copper and aluminum, which are standardized and indicated in the table, should be ≤ 0.20%.

Mechanical properties

σU, MPa HB, MPa
Wire, flat-rolled products in delivery condition
589-981 110-140

Description mechanical marks

Name Description
σU Limit short-term strength
HB Brinell hardness number

Physical characteristics

Temperature r, kg/m3
20 12450

A description of the physical symbols

Name Description
l Coefficient of thermal conductivity