Fire-refined Tough Pitch Copper, UNS C12500, OSO25 Temper flat products

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Fire-refined Tough Pitch Copper, UNS C12500, OSO25 Temper flat products
Categories:	Metal; Nonferrous Metal; Copper Alloy
Material Notes:	Good to excellent corrosion resistance. Excellent hot and cold workability; good forgeability. Fabricated by coining, coppersmithing, drawing and upsetting, hot forging and pressing, spinning, swaging, stamping. Applications: busbars, bus conductors, waveguides, hollow conductors, lead-in wires and anodes for vacuum tubes, vacuum seals, transistor components, glass to metal seals, coaxial cables and tubes, klystrons, microwave tubes, and rectifiers. Test specimens: flat products - 1mm thickness. UNS C12500, C12700, C12800, C12900, and C13000 are similar alloys having very similar mechanical properties; they are distinguished by differences in silver content.
Key Words:	Fire-Refined Copper, FRTP. MIL-W-3318
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Physical Properties	Metric	English	Comments

Density	8.89 g/cc	0.321 lb/in³

Mechanical Properties	Metric	English	Comments
Hardness, Rockwell F	45	45
Tensile Strength, Ultimate	235 MPa	34100 psi
Tensile Strength, Yield	76.0 MPa @Strain 0.5 %	11000 psi @Strain 0.5 %
Elongation at Break	45 %	45 %	In 50 mm
Modulus of Elasticity	115 GPa	16700 ksi	Estimated from similar Cu Alloys
Poissons Ratio	0.31	0.31	Calculated
Machinability	20 %	20 %	UNS C36000 (free-cutting brass) = 100%
Forgeability	65 %	65 %
Shear Modulus	44.0 GPa	6380 ksi	Estimated from similar Cu Alloys
Shear Strength	160 MPa	23200 psi

Electrical Properties	Metric	English	Comments
Electrical Resistivity	0.00000176 ohm-cm @Temperature 20.0 °C	0.00000176 ohm-cm @Temperature 68.0 °F

Thermal Properties	Metric	English	Comments
CTE, linear	16.8 µm/m-°C @Temperature 20.0 - 100 °C	9.33 µin/in-°F @Temperature 68.0 - 212 °F
	17.4 µm/m-°C @Temperature 20.0 - 200 °C	9.67 µin/in-°F @Temperature 68.0 - 392 °F
	17.7 µm/m-°C @Temperature 20.0 - 300 °C	9.83 µin/in-°F @Temperature 68.0 - 572 °F
Specific Heat Capacity	0.385 J/g-°C	0.0920 BTU/lb-°F
Thermal Conductivity	377 W/m-K @Temperature 20.0 °C	2620 BTU-in/hr-ft²-°F @Temperature 68.0 °F
Melting Point	<= 1085 °C	<= 1985 °F
Solidus	1065 °C	1949 °F
Liquidus	1085 °C	1985 °F
Annealing Point	399 - 649 °C	750 - 1200 °F

Processing Properties	Metric	English	Comments
Annealing Temperature	400 - 650 °C	752 - 1200 °F
Hot-Working Temperature	750 - 950 °C	1380 - 1740 °F

Component Elements Properties	Metric	English	Comments
Antimony, Sb	<= 0.0030 %	<= 0.0030 %
Arsenic, As	<= 0.012 %	<= 0.012 %
Bismuth, Bi	<= 0.0030 %	<= 0.0030 %
Copper, Cu	>= 99.88 %	>= 99.88 %	Includes Ag
Lead, Pb	<= 0.0040 %	<= 0.0040 %
Nickel, Ni	<= 0.050 %	<= 0.050 %
Selenium, Se	<= 0.025 %	<= 0.025 %	includes Te

References for this datasheet.

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MC12500b1 / 10592

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