Fire-refined Tough Pitch Copper with Silver, UNS C12700, OSO50 Temper rod, shapes

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Fire-refined Tough Pitch Copper with Silver, UNS C12700, OSO50 Temper rod, shapes
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: rod - 25mm diameter and shapes - 13mm diameter. 8 oz/ton Ag (UNS C12700), 10 oz/ton Ag (UNS C12800), 16 oz/ton Ag (UNS C12900), 25 oz/ton Ag (UNS C13000). UNS C12700 is inactive per the Copper Development Association. 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, FRTSP. 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	40	40
Tensile Strength, Ultimate	220 MPa	31900 psi
Tensile Strength, Yield	69.0 MPa @Strain 0.5 %	10000 psi @Strain 0.5 %
Elongation at Break	50 %	50 %	In 50 mm, shapes
	55 %	55 %	In 50 mm, rod
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%
Shear Modulus	44.0 GPa	6380 ksi	Estimated from similar Cu Alloys
Shear Strength	150 MPa	21800 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
Liquidus	1085 °C	1985 °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
Silver, Ag	>= 0.027 %	>= 0.027 %	Min 8 troy oz./ton (may be specified)

References for this datasheet.

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MC12700b2 / 148797

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