Ampco Metal AMPCOLOY® 972 Chromium-Copper Alloy, Extruded and Drawn Rods, 25

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Ampco Metal AMPCOLOY® 972 Chromium-Copper Alloy, Extruded and Drawn Rods, 25 - 50 mm.
Categories:	Metal; Nonferrous Metal; Copper Alloy
Material Notes:	AMPCOLOY 972 is a precipitation hardening copper-base-alloy. In the heat treated condition, this alloy retains the mechanical properties together with a good ductility in the range of 300-500°C. High electrical conductivity and high mechanical properties are attributes of this versatile alloy. Applications: Resistance welding tips; Electrode caps for the automotive industry; Tong arms for welding robots; Electrode holders; Parts for energy engineering; Press parts
Key Words:	CDA C18150; CDA C18200; CDA C18400; RWMA Class2, CuCr1Zr; EN CW 106C; DIN 44759 A 2/2 17666 W.Nr. 2.1293; AFNOR UC1Zr
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Physical Properties	Metric	English	Comments

Density	8.90 g/cc	0.322 lb/in³

Mechanical Properties	Metric	English	Comments
Hardness, Brinell	142	142	HB 10
Hardness, Rockwell B	79	79
Tensile Strength, Ultimate	480 MPa	69600 psi
Tensile Strength, Yield	413 MPa @Strain 0.5 %	59900 psi @Strain 0.5 %
Elongation at Break	20 %	20 %
Modulus of Elasticity	120 GPa	17400 ksi

Electrical Properties	Metric	English	Comments
Electrical Resistivity	0.00000196 ohm-cm	0.00000196 ohm-cm	86% I.A.C.S.

Thermal Properties	Metric	English	Comments
CTE, linear	17.0 µm/m-°C @Temperature 20.0 °C	9.44 µin/in-°F @Temperature 68.0 °F
Specific Heat Capacity	0.380 J/g-°C	0.0908 BTU/lb-°F
Thermal Conductivity	320 W/m-K	2220 BTU-in/hr-ft²-°F

Component Elements Properties	Metric	English	Comments
Chromium, Cr	1.0 %	1.0 %
Copper, Cu	98.7 - 98.9 %	98.7 - 98.9 %	As Balance
Other, total	<= 0.20 %	<= 0.20 %
Zirconium, Zr	0.10 %	0.10 %

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NAMPCO47 / 15001

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