Beryllium Copper Shim Manufacturer, Supplier and Stockist

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Beryllium Copper Shim is thin, precision flat stock used where high strength, electrical conductivity, spring properties, and accurate thickness are required. BeCu shim, beryllium copper shim stock, and copper beryllium shim are available in different tempers.

Manufactured to ASTM B194 beryllium copper shim specifications, the C17200 shim, CuBe2 shim, and Alloy 25 shim are suitable for electrical, electronic, tooling, spring, and precision engineering applications. Precision beryllium copper shims and non-sparking shim can be supplied to required dimensions and beryllium copper shim thickness.

Sachin Steel Centre supplies beryllium copper shim for electrical, electronic, tooling, spring, and precision engineering applications. Shims can be supplied to the required dimensions, temper, specifications, and documentation.

Table Of Content

Beryllium Copper Shim Specification
Chemical Composition of Beryllium Copper Shims
Beryllium Copper Shim TF00 Age-Hardened Typical Mechanical Properties
Tempers and Typical Mechanical Properties (C17200, typical ranges, verify on the certificate)
Applications of Beryllium Copper Shim
Frequently Asked Questions

Technical Data

Beryllium Copper Shim Specification

Parameter	Specification
Standards	ASTM B194 / ASME SB194
Specifications	AMS 4530, AMS 4533, AMS 4534, AMS 4650, AMS 4651, SAE J461, SAE J463, JIS H 3130, RWMA Class 4
Thickness	0.5–10 mm
Width	100–1500 mm; 10–2500 mm
Length	Up to 12000 mm
Temper for Shims	A (TB00), 1/4 H (TD01), 1/2 H (TD02), H (TD04), AT (TF00)
UK Designation	CuBe2, Alloy 25

Chemical Composition of Beryllium Copper Shims

Grade	Cu*	Ni + Co	Ni + Co + Fe	Be	Al	Si
Beryllium Copper	Remainder	0.20 min	0.6 max	1.80–2.00	0.20 max	0.20 max

Beryllium Copper Shim TF00 Age-Hardened Typical Mechanical Properties

Property	Value
Density	8.25 g/cm³
Melting Point	982 °C (1800 °F)
Tensile Strength	165 ksi, 1138 MPa
Yield Strength (0.2% Offset)	140 ksi, 965 MPa
Elongation	3%

Tempers and Typical Mechanical Properties (C17200, typical ranges, verify on the certificate)

Temper	Condition	Typical Tensile	Typical Hardness	Use for Shims
TB00 (A)	Solution annealed, soft	About 410 to 540 MPa	About HRB 45 to 78	Stamping, etching, laser cutting, then age harden
TD01 to TD04	Cold rolled (quarter hard to hard)	About 515 to 830 MPa	About HRB 68 to 102	Flat shims that need moderate springiness without aging
TF00 (AT)	Age hardened from annealed	About 1140 to 1345 MPa	About HRC 36 to 41	Shims cut soft then hardened for load bearing or spring use
TM series	Mill hardened, supplied pre hardened	In the age hardened range	In the age hardened range	Cut and used without further heat treatment, with less forming room

Applications of Beryllium Copper Shims

Electrical Contacts: BeCu shim is used for connectors, terminals, switches, and contact components requiring conductivity and spring properties.
Precision Engineering: Precision beryllium copper shim is used for spacing, alignment, and dimensional adjustment in assemblies.
Springs and Clips: C17200 shims and CuBe2 shims are suitable for spring clips, diaphragms, and flexible components.
Tooling: Alloy 25 shim is used in moulds, tooling, and precision fixtures requiring strength and dimensional stability.
Non-Sparking Applications: A Non-sparking shim is used for selected tools and components where spark generation must be minimised.
Industrial Components: Beryllium copper shim stock is used for electrical, mechanical, and instrumentation applications.

Frequently Asked Questions

What is the difference between C17200 and C17500 beryllium copper sheets?

C17200 beryllium copper sheet offers higher strength, while C17500 sheet provides higher electrical and thermal conductivity. Both are precipitation-hardened copper alloys.

What is the difference between Alloy 25, CuBe2, and C17200?

Alloy 25 sheet, CuBe2 sheet, and UNS C17200 sheet identify the same high-strength beryllium copper alloy using different commercial, chemical, and designation systems.

What is the difference between annealed and age-hardened beryllium copper sheet?

Annealed beryllium copper sheet is softer and easier to form. Age-hardened C17200 beryllium copper sheet provides higher strength after controlled heat treatment.

Can beryllium copper sheet be formed before it is hardened?

Yes. C17200 beryllium copper sheet is commonly formed in the annealed condition before age hardening. This provides better formability before achieving higher strength.

Is beryllium copper sheet magnetic or sparking?

Beryllium copper sheet is non-magnetic and commonly used as a non-sparking copper sheet for selected tools and components where spark generation must be minimised.

Which ASTM standard covers beryllium copper sheet?

ASTM B194 covers wrought copper-beryllium alloy plate, sheet, strip, and discs. ASTM B194 beryllium copper sheet includes grades such as C17200.

Is beryllium copper sheet safe to handle and machine?

Solid BeCu sheet is generally suitable for normal handling. Machining, grinding, welding, and heating require dust or fume controls because beryllium exposure can be hazardous.

What thicknesses and sizes are available, and can it be cut to size?

Beryllium copper sheet is available in various thicknesses and dimensions. A beryllium copper sheet manufacturer, supplier, stockist, or exporter can provide cut-to-size material.

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