Copper

C18150 Copper

Chromium-zirconium copper (Class 2)

C18150 copper (copper-chromium-zirconium, CuCrZr) combines very high electrical and thermal conductivity with good mechanical strength and excellent resistance to softening. Hardenable by heat treatment, it is an RWMA Class 2 material, beryllium-free; the zirconium improves creep resistance and reduces electrode sticking in resistance welding.

Standards and equivalents

UNS	ASTM / ASME	RWMA	EN	DIN	JIS
C18150	—	Class 2	CW106C	2.1293	—

Chemical composition

%	Cr	Zr	Fe	Si	Others	Cu
Min	0.50	0.02	----	----	----	----
Max	1.50	0.20	----	----	----	Bal.

Supply condition

Hot rolledTF00 (AT) · TL06 temper

Hot forgedTF00 (AT) · TL06 temper

Cold drawnTF00 (AT) · TL06 temper

Available package sizes

Round bars1/4" – 8"6.35 mm – 203.2 mm

Plates1/4" – 4"6.35 mm – 101.6 mm

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Typical applications

• Resistance welding electrodes
• Welding wheels and tips
• Nozzles and tips
• Electrode holders and arms
• Back-up bars
• Continuous casting molds
• Contacts and switching
• Heavy-duty bus bars
• High-temperature components

Note: The information and values in this data sheet are provided for reference only and may vary depending on manufacturing, treatment and application conditions. They do not constitute guaranteed specifications, so use and interpretation of this data is the user's responsibility.

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