Copper

C17200 Copper

Beryllium copper (Class 4)

C17200 copper (copper-beryllium, CuBe2) is the highest-strength copper alloy, hardenable by heat treatment. In AT temper it reaches hardness of 36–41 HRC while retaining useful electrical and thermal conductivity, with non-magnetic, non-sparking behavior. It is the go-to choice for molds, springs, connectors and safety tools.

Standards and equivalents

UNS	ASTM / ASME	RWMA	EN	DIN	JIS
C17200	B196 / B194	Class 4	CW101C	2.1247	C1720

Chemical composition

%	Be	Ni+Co	Ni+Fe+Co	Al	Si	Cu
Min	1.80	0.20	----	----	----	----
Max	2.00	----	0.60	0.20	0.20	Bal.

Supply condition

Hot rolledTF00 (AT) temper

Hot forgedTF00 (AT) temper

Available package sizes

Round bars0.50" – 8"12.7 mm – 203.2 mm

Plates1/4" – 6"6.35 mm – 152.4 mm

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Typical applications

• Injection and blow molds
• Precision springs and contacts
• High-performance electrical connectors
• Non-sparking tools
• High-load bushings and bearings
• Aircraft components
• Mold inserts
• Drilling components (oil & gas)
• Welding electrode holders

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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