75-25 Alloy PLI (PLI-25)

Designation

Name The value
Designation GOST Cyrillic ПлИ 75-25
Designation GOST Latin PlI 75-25
Transliteration PlI 75-25
By chemical elements PtIr 75-25
Name The value
Designation GOST Cyrillic ПлИ-25
Designation GOST Latin PlI-25
Transliteration PlI-25
By chemical elements PtIr-25

Description

Alloy PLI 75−25 used: for the manufacture of semi-finished products (sheets, tapes, strips, foils, wire, pipes, profiles, forgings) by hot or cold deformation used in instrument and apparatus building; and discontinuous sliding contacts; medical supplies.

Note

Platinum-iridium alloy.

Standards

Name Code Standards
Non-ferrous metals, including rare, and their alloys В51 GOST 13498-79, GOST 13498-2010
Wire from nonferrous metals and their alloys В74 GOST 18389-2014
Sheets and strips В53 GOST 24353-80, GOST 24718-81, TU 48-1-450-84
Classification, nomenclature and General rules В50 GOST 6563-75

Chemical composition

Standard Fe Ir Pt
GOST 13498-2010 ≤0.04 24-26 74-76
Pt is the basis.
According to GOST 13498-79, GOST 13498-2010, the total content of palladium, rhodium and gold in the alloy should be ≤ 0.15%. The sum of all normalized impurities should be ≤ 0.19%.

Mechanical properties

σU, MPa
GOST 13498-2010
685-830

Description mechanical marks

Name Description
σU Limit short-term strength

Physical characteristics

Temperature r, kg/m3
20 21680

A description of the physical symbols

Name Description
l Coefficient of thermal conductivity