Materion Beryllium Copper Alloy 25 Tube; AT (TF00) Temper; up to 76 mm o.d. (UNS C17200)

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Materion Beryllium Copper Alloy 25 Tube; AT (TF00) Temper; up to 76 mm o.d. (UNS C17200)
Categories:	Metal; Nonferrous Metal; Beryllium Alloy; Copper Alloy
Material Notes:	Treatment required for max strength: 3 hrs @ 315-330°C or Mill Hardened Tabulated properties apply to products after age hardening. Information supplied by Brush Wellman. Brush Engineered Materials Inc. changed its name to Materion Corporation in March 2011.
Key Words:	RWMA Class 4, ASTM B-643, AMS 4535
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Physical Properties	Metric	English	Comments

Density	8.36 g/cc	0.302 lb/in³

Mechanical Properties	Metric	English	Comments
Hardness, Rockwell C	36 - 42	36 - 42
Tensile Strength, Ultimate	1130 - 1380 MPa	164000 - 200000 psi
Tensile Strength, Yield	990 - 1210 MPa	144000 - 175000 psi
Elongation at Break	4.0 - 10 %	4.0 - 10 %
Modulus of Elasticity	131 GPa	19000 ksi

Electrical Properties	Metric	English	Comments
Electrical Resistivity	0.00000610 - 0.00000780 ohm-cm	0.00000610 - 0.00000780 ohm-cm	22-28% IACS Conductivity

Thermal Properties	Metric	English	Comments
CTE, linear	17.0 µm/m-°C @Temperature 20.0 - 200 °C	9.44 µin/in-°F @Temperature 68.0 - 392 °F
Thermal Conductivity	105 W/m-K	729 BTU-in/hr-ft²-°F
Melting Point	870 - 980 °C	1600 - 1800 °F
Solidus	870 °C	1600 °F
Liquidus	980 °C	1800 °F

Component Elements Properties	Metric	English	Comments
Beryllium, Be	1.8 - 2.0 %	1.8 - 2.0 %
Co + Ni	>= 0.20 %	>= 0.20 %
Co + Ni + Fe	<= 0.60 %	<= 0.60 %
Copper, Cu	98 %	98 %	as balance
Lead, Pb	<= 0.020 %	<= 0.020 %

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