C17510 Copper-Nickel-Beryllium (CuNi2Be)

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Overview

As a low beryllium alloy, C17510 resides at the lower strength end of the beryllium copper strength spectrum but in comparison has a substantial increase in electrical conductivity. The alloy processes and heat-treats like all beryllium coppers and can also be provided in a (HM) “Mill Hardened” temper.

Physical Properties

Annealing Range (Min) 1550 °F
Annealing Range (Max) 1700 °F
Density 0.317 lb/in³
Electrical Resistivity (Annealed) 21.6 Ω·cir-mil/ft @ 68 °F
Electrical Conductivity (Annealed) 48% IACS @ 68 °F
Thermal Conductivity 120 Btu/ft²/ft·hr/°F @ 68 °F
Coefficient of Thermal Expansion 9.8 per °F (68-572 °F)
Modulus of Elasticity (Tension) 19 ksi
Modulus of Rigidity (Tension) 7 ksi
Melting Point (Solidus) 1,700 °F
Melting Point (Liquidus) 1,900 °F
Annealing Range (Min) 843 °C
Annealing Range (Max) 927 °C
Density 8.94 gm/cm³
Electrical Resistivity (Annealed) 3.59 µΩ·cm @ 20 °C
Electrical Conductivity (Annealed) 0.28 MS·cm @ 20 °C
Thermal Conductivity 208 W/m·K @ 20 °C
Coefficient of Thermal Expansion 17.6 per °C (20-300 °C)
Modulus of Elasticity (Tension) 132 Mpa
Modulus of Rigidity (Tension) 51 Mpa
Melting Point (Solidus) 927 °C
Melting Point (Liquidus) 1,038 °C

Round Wire

TEMPER NAME TEMPER CODE TENSILE
STRENGTH (ksi)
MILL LIMITS
(inch)
Min Max
Annealed TB00 35.0 55.0 .0010 - .1285 inch
Hard TD04 65.0 80.0
AT TF00 100 130
HT TH04 110 140
TEMPER NAME TEMPER CODE TENSILE
STRENGTH (Mpa)
MILL LIMITS
(mm)
Min Max
Annealed TB00 240 380 .0254 - 3.264 mm
Hard TD04 440 560
AT TF00 680 900
HT TH04 750 970

Square Wire

TEMPER NAME TEMPER CODE TENSILE
STRENGTH (ksi)
MILL LIMITS
(inch)
Min Max
Annealed TB00 35.0 55.0 .0100 - .0808 inch 
Hard TD04 65.0 80.0
AT TF00 100 130
HT TH04 110 140
TEMPER NAME TEMPER CODE TENSILE
STRENGTH (Mpa)
MILL LIMITS
(mm)
Min Max
Annealed TB00 240 380 .2540 - 1.905 mm
Hard TD04 440 560
AT TF00 680 900
HT TH04 750 970

Rolled Flat

TEMPER NAME TEMPER CODE TENSILE
STRENGTH (ksi)
MILL LIMITS
(inch)
Min Max
Annealed TB00 35.0 55.0 Thickness:
.0100 - .0500 inch

Width:
.0150 - .2500 inch
1/2 Hard TD02 60.0 75.0
Hard TD04 70.0 85.0
AT TF00 100 130
1/2 HT TH02 110 140
HT TH04 110 140
1/2 HM TM02 95.0 120
HM TM04 110 135
TEMPER NAME TEMPER CODE TENSILE
STRENGTH (Mpa)
MILL LIMITS
(mm)
Min Max
Annealed TB00 240 380 Thickness:
.2540 - 1.905 mm

Width:
.3810 - 6.350 mm
1/2 Hard TD02 410 520
Hard TD04 480 590
AT TF00 680 900
1/2 HT TH02 750 970
HT TH04 750 970
1/2 HM TM02 650 830
HM TM04 750 940

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