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85% Platinum - 15% Iridium (85Pt/15Ir)

General Alloy Overview

ASTM

ASTM B684

Application Examples

Medical Devices

Industry Examples

Medical

Tempers

Wrought Hardened

Availible Forms

Wire

Temper Independent Properties

ParameterValueValue 2
Solidus, °F (°C)3360(1850)
Liquidus, °F (°C)3415(1880)
Melting Range, °F (°C)55(30)
Density, dwt/in³­ (g/cm³)228(21.6)
Specific Heat Capacity, Btu/lb·°F, (J/g·K)0.032(0.13)
Coefficient of Thermal Expansion, /°F (/K)4.7×10-6(8.5×10-6)
Thermal EMF vs Pt, μV/°F (μV/°C)†
Emissivity†
ParameterValueValue 2
Thermal Conductivity, Btu/hr·ft·°F (W/m·k)14.2(24.6)
Temperature Coefficient of Resistance, /°F (/K)7.8×10-4(1.4×10-3)
Electrical Resistivity, Ω·cmf (µΩ·cm)170(28)
Electrical Conductivity, %IACS6
Elastic Modulus, Msi (GPa)†
Shear Modulus, Msi (GPa)†
Poissons Ratio†
Nobility, %100

Temper Dependent Properties

Work Hardened - Wire - Spool 0.015 - 0.020 in. (0.38 - 0.5 mm) diameter

ParameterNominalMin
NominalMin
0.2% Offset Yield Strength, ksi (MPa)†(N/A)
Tensile Elongation to Failure, %61
Vickers Microhardness, HV†(N/A)
ParameterNominalMin
NominalMin
Ultimate Tensile Strength, ksi (MPa)115 (790)90 (620)
Knoop Microhardness, HK†200

† - Values containing † are available upon request

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