Paliney 7

General Alloy Overview

ASTM

ASTM B540

Application Examples

Electrical Contacts

Industry Examples

Automotive, Semiconductor, Industrial, Aerospace

Tempers

Age Hardened, Annealed, Wrought Hardened

Availible Forms

Wire, Rod, Strip

Temper Independent Properties

Parameter	Value	Value 2
Solidus, °F (°C)	1950	(1065)
Liquidus, °F (°C)	2190	(1200)
Melting Range, °F (°C)	240	(135)
Density, dwt/in³ (g/cm³)	125	(11.8)
Specific Heat Capacity, Btu/lb·°F, (J/g·K)	0.057	(0.24)
Coefficient of Thermal Expansion, /°F (/K)	7.5×10^-6	(13×10^-6 )
Thermal EMF vs Pt, μV/°F (μV/°C)	-9.0	(-16)
Emissivity	†

Parameter	Value	Value 2
Thermal Conductivity, Btu/hr·ft·°F (W/m·k)	33	(57)
Temperature Coefficient of Resistance, /°F (/K)	†
Electrical Resistivity, Ω·cmf (µΩ·cm)	200	(33)
Electrical Conductivity, %IACS	5
Elastic Modulus, Msi (GPa)	17	(117)
Shear Modulus, Msi (GPa)	6.78	(46.7)
Poissons Ratio	0.359
Nobility, %	55

Temper Dependent Properties

Stress Relieved - Wire - Spool 0.002 - 0.057 in. (0.05 - 1.5 mm) diameter

Parameter	Nominal	Min
	Nominal	Min
0.2% Offset Yield Strength, ksi (MPa)	†	(N/A)
Tensile Elongation to Failure, %	15	10
Vickers Microhardness, HV	†	265

Parameter	Nominal	Min
	Nominal	Min
Ultimate Tensile Strength, ksi (MPa)	150 (1035)	140 (970)
Knoop Microhardness, HK	305	280

Age Hardened (HT Temper) - Wire - Cut Length 0.002 - 0.057 in. (0.05 - 1.5 mm) diameter

Parameter	Nominal	Min
	Nominal	Min
0.2% Offset Yield Strength, ksi (MPa)	180 (1250)	(N/A)
Tensile Elongation to Failure, %	4	1
Vickers Microhardness, HV	365	330

Parameter	Nominal	Min
	Nominal	Min
Ultimate Tensile Strength, ksi (MPa)	185 (1275)	160 (1100)
Knoop Microhardness, HK	380	350

Partially Age Hardened (DHT Temper) - Wire - Cut Length 0.002 - 0.057 in. (0.05 - 1.5 mm) diameter

Parameter	Nominal	Min
	Nominal	Min
0.2% Offset Yield Strength, ksi (MPa)	150 (1000)	(N/A)
Tensile Elongation to Failure, %	16	8
Vickers Microhardness, HV	350	320

Parameter	Nominal	Min
	Nominal	Min
Ultimate Tensile Strength, ksi (MPa)	170 (1170)	160 (1100)
Knoop Microhardness, HK	345	320

Anneal - Wire - Spool 0.002 - 0.057 in. (0.05 - 1.5 mm) diameter

Parameter	Nominal	Min
	Nominal	Min
0.2% Offset Yield Strength, ksi (MPa)	†	(N/A)
Tensile Elongation to Failure, %	30	20
Vickers Microhardness, HV	†	190

Parameter	Nominal	Min
	Nominal	Min
Ultimate Tensile Strength, ksi (MPa)	115 (790)	110 (760)
Knoop Microhardness, HK	235	200

Age Hardened (HT Temper) - Rod 0.057 - 0.200 in. (1.5 - 5.0 mm) diameter

Parameter	Nominal	Min
	Nominal	Min
0.2% Offset Yield Strength, ksi (MPa)	†	(N/A)
Tensile Elongation to Failure, %	3	(N/A)
Vickers Microhardness, HV	†	(N/A)

Parameter	Nominal	Min
	Nominal	Min
Ultimate Tensile Strength, ksi (MPa)	185 (1275)	(N/A)
Knoop Microhardness, HK	†	(N/A)

Cold Work - Rod 0.057 - 0.200 in. (1.5 - 5.0 mm) diameter

Parameter	Nominal	Min
	Nominal	Min
0.2% Offset Yield Strength, ksi (MPa)	†	(N/A)
Tensile Elongation to Failure, %	5	(N/A)
Vickers Microhardness, HV	†	(N/A)

Parameter	Nominal	Min
	Nominal	Min
Ultimate Tensile Strength, ksi (MPa)	145 (1000)	(N/A)
Knoop Microhardness, HK	†	(N/A)

Anneal - Rod 0.057 - 0.200 in. (1.5 - 5.0 mm) diameter

Parameter	Nominal	Min
	Nominal	Min
0.2% Offset Yield Strength, ksi (MPa)	†	(N/A)
Tensile Elongation to Failure, %	23	15
Vickers Microhardness, HV	†	(N/A)

Parameter	Nominal	Min
	Nominal	Min
Ultimate Tensile Strength, ksi (MPa)	105 (725)	95 (655)
Knoop Microhardness, HK	†	(N/A)

Age Hardened (HT Temper) - Strip 0.002-0.040 in. (0.05 - 1.0 mm) thickness

Parameter	Nominal	Min
	Nominal	Min
0.2% Offset Yield Strength, ksi (MPa)	180 (1225)	(N/A)
Tensile Elongation to Failure, %	3	1
Vickers Microhardness, HV	†	330

Parameter	Nominal	Min
	Nominal	Min
Ultimate Tensile Strength, ksi (MPa)	180 (1240)	160 (1100)
Knoop Microhardness, HK	370	340

Partially Age Hardened (DHT Temper) - Strip 0.002-0.040 in. (0.05 - 1.0 mm) thickness

Parameter	Nominal	Min
	Nominal	Min
0.2% Offset Yield Strength, ksi (MPa)	155 (1050)	(N/A)
Tensile Elongation to Failure, %	17	8
Vickers Microhardness, HV	†	320

Parameter	Nominal	Min
	Nominal	Min
Ultimate Tensile Strength, ksi (MPa)	170 (1170)	150 (1030)
Knoop Microhardness, HK	345	300

Anneal - Strip 0.002-0.040 in. (0.05 - 1.0 mm) thickness

Parameter	Nominal	Min
	Nominal	Min
0.2% Offset Yield Strength, ksi (MPa)	90 (650)	(N/A)
Tensile Elongation to Failure, %	25	12
Vickers Microhardness, HV	†	185

Parameter	Nominal	Min
	Nominal	Min
Ultimate Tensile Strength, ksi (MPa)	120 (825)	110 (760)
Knoop Microhardness, HK	†	200

† - Values containing † are available upon request

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