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Deriney 72

General Alloy Overview

ASTM

N/A

Application Examples

Radiopaque guidewire tip microcoils; cantilever probes; vertical probes; wear and corrosion resistant bearing material

Industry Examples

Medical
Semiconductor

Tempers

Annealed
Stress Relived
CW > 70% AR
CW < 70% AR
HTCW > 70% AR
HTCW < 70% AR

Available Forms

Fine Wire
Intermediate Wire
Strip
Cut-Offs
Probes

Constant (Temper - Independent) Properties

ParameterValue
Solidus, °F (°C)2831 (1555)
Liquidus, °F (°C)2867 (1575)
Melting Range, °F (°C)36 (20)
Density dwt/in3 (g/cm3)172.8 (16.39)
Electrical Resistivity, µΩ-cmf (µΩ-cm)297 (49.3)
Electrical Conductivity, %IACS3.50
Temperature Coefficent of Resistance, /°F (/K)3.3E-04 (6.0E-04)
Thermal Conductivity, Btu/hr-ft-°F (W/m-K)8.4 (15)
Coefficient of Thermal Expansion, /°F (/K)6.7E-06 (1.2E-05)
Thermal EMF vs. Pt, µV/°F (µV/°C)14.8 (26.7)
Specific Heat Capacity, Btu/lb-°F (J/g-K)0.05 (0.20)
ParameterValue
Elastic Modulus, Msi (GPa)29.6 (204)
Shear Modulus Msi (GPa)10.8 (74.8)
Poisson's Ratio0.363
Single phase/multiphaseSingle Phase
Lattice parameter3.68
Emissivity0.368
Tin adhesion, out of 31.7
Contact resistance (Cres), 30 gf, mΩ12.3
Cres, oxidized 1,000h@150°C, 30 gf, mΩ31.4
Cres, flowers of sufur 720h@50°C, 30gf, mΩ24.9
X-ray radiopacity, % of Pt-10wt.% Ir, % at 75 kV79

Annealed Properties

Fine Wire and Intermediate Wire

ParameterValue
0.2% Offset Yield Strength, ksi (MPa)165 (1140)
Ultimate Tensile Strength, ksi (MPa)205 (1410)
Elongation to Failure, %13
ParameterValue
Knoop Microhardness, HK100335
Vickers Microhardness, HV100330

Stress Relieved Properties

Fine Wire and Intermediate Wire

ParameterValue
0.2% Offset Yield Strength, ksi (MPa)247 (1705)
Ultimate Tensile Strength, ksi (MPa)283 (1950)
Elongation to Failure, %1
ParameterValue
Knoop Microhardness, HK100455
Vickers Microhardness, HV100445
Fatigue Performance, Cycles2.2E5

CW <70% AR Properties

Fine Wire and Intermediate Wire

ParameterValue
0.2% Offset Yield Strength, ksi (MPa)200 (1380)
Ultimate Tensile Strength, ksi (MPa)229 (1580)
Elongation to Failure, %3
ParameterValue
Knoop Microhardness, HK50490
Vickers Microhardness, HV100480

CW >70% AR Properties

Fine Wire and Intermediate Wire

ParameterValue
0.2% Offset Yield Strength, ksi (MPa)310 (2140)
Ultimate Tensile Strength, ksi (MPa)329 (2270)
Elongation to Failure, %2
ParameterValue
Knoop Microhardness, HK50530
Vickers Microhardness, HV100520

HTCW >70% AR Properties

Fine Wire and Intermediate Wire

ParameterValue
0.2% Offset Yield Strength, ksi (MPa)245 (1690)
Ultimate Tensile Strength, ksi (MPa)249 (1720)
Elongation to Failure, %2
ParameterValue
Knoop Microhardness, HK50625
Vickers Microhardness, HV100615

HTCW <70% AR Properties

Fine Wire and Intermediate Wire

ParameterValue
0.2% Offset Yield Strength, ksi (MPa)245 (1690)
Ultimate Tensile Strength, ksi (MPa)249 (1720)
Elongation to Failure, %2
ParameterValue
Knoop Microhardness, HK530
Vickers Microhardness, HV520

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