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C72900

General Alloy Overview

ASTM

ASTM B740

Application Examples

Spring Arms

Industry Examples

Industrial, Automotive, Aerospace

Tempers

Age Hardened

Availible Forms

Strip

Temper Independent Properties

ParameterValueValue 2
Solidus, °F (°C)1650(900)
Liquidus, °F (°C)2050(1125)
Melting Range, °F (°C)400(225)
Density, dwt/in³­ (g/cm³)93(8.8)
Specific Heat Capacity, Btu/lb·°F, (J/g·K)0.091(0.381)
Coefficient of Thermal Expansion, /°F (/K)†
Thermal EMF vs Pt, μV/°F (μV/°C)†
Emissivity†
ParameterValueValue 2
Thermal Conductivity, Btu/hr·ft·°F (W/m·k)†
Temperature Coefficient of Resistance, /°F (/K)†
Electrical Resistivity, Ω·cmf (µΩ·cm)†
Electrical Conductivity, %IACS†
Elastic Modulus, Msi (GPa)†
Shear Modulus, Msi (GPa)†
Poissons Ratio†
Nobility, %0.5

Temper Dependent Properties

Age Hardened (BHT Temper) - Strip -
Fabricated Bimetallic Parts 0.002 - 0.015 in. (0.05 - 0.38 mm) thickness

ParameterNominalMin
NominalMin
0.2% Offset Yield Strength, ksi (MPa)130 (895)(N/A)
Tensile Elongation to Failure, %3(N/A)
Vickers Microhardness, HV†(N/A)
ParameterNominalMin
NominalMin
Ultimate Tensile Strength, ksi (MPa)150 (1035)(N/A)
Knoop Microhardness, HK†(N/A)

Age Hardened (CHT Temper) - Strip -
Fabricated Bimetallic Parts 0.002 - 0.015 in. (0.05 - 0.38 mm) thickness

ParameterNominalMin
NominalMin
0.2% Offset Yield Strength, ksi (MPa)80 (550)(N/A)
Tensile Elongation to Failure, %8(N/A)
Vickers Microhardness, HV†(N/A)
ParameterNominalMin
NominalMin
Ultimate Tensile Strength, ksi (MPa)110 (760)(N/A)
Knoop Microhardness, HK†(N/A)

† - Values containing † are available upon request

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