300mm Wide Beryllium Copper Strips For Bell Relay Contact Spring

Place of Origin China
Certification ISO,SGS
Model Number BE-CU Alloy 25
Minimum Order Quantity 50
Price 30USD
Packaging Details Coil+plywood case
Delivery Time 10~15days
Payment Terms L/C, T/T, Western Union
Supply Ability 200T/Month

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Product Details
Name Beryllium Copper Strips Max Coil Wt. 2T
Thinnest Thick. 0.007'' Max Width 300mm
Standard ASTM B194, SAE J463, J461 Safe Handling No Special Health Risk.
Machining Property Good Surface Bright/Polished
Flatness Good State Hard(TD04)
Application Bell Relay Contact Spring
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300mm Wide Beryllium Copper Strips


Good Flatness Beryllium Copper Strips


TD04 Beryllium Copper Strips

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Product Description

BE-CU Alloy 25 Beryllium Copper Strips 0.007''x300mm Wide Coil For Bell Relay Contact Spring

Product Normal Description:

Product Name: Beryllium copper strips

Grade: BE-CU Alloy 25

Standard: ASTM B194, SAE J463, J461

Product Specification: 0.007''x300mm

State: Hard(TD04)

Product Brand: CUBERYLLIUM®


CUBERYLLIUM® is specialized in producing beryllium copper alloys, including beryllium copper strips/ tapes, beryllium copper rods/bars, beryllium copper tubes, beryllium copper wires, beryllium copper plates, beryllium copper billets, with high quality performance metals for electrical industry fasteners and industrial.

The grades could be C17200. C17300, C17500, C17510.

C17200(CU-BE Alloy 25) is manufactured to provide a combination of high strength and hardness properties coupled with superior thermal properties. This range of properties makes C17200 the premier material for copper alloy molds and a wide range of other applications from oil and gas to aerospace.


Chemical Composition of BE-CU Alloy 25 Beryllium Copper Alloy:

Beryllium(Be): 1.80-2.00%

Cobalt(Co) + Nickel(Ni): 0.20% Min

Cobalt(Co) + Nickel(Ni) + Iron(Fe): 0.60% Max

Lead: 0.02% Max

Copper(Cu): Balance

Note: Copper plus additions equal 99.5% Minimum.


Typical Physical Properties of BE-CU Alloy 25 Beryllium Copper Alloy:

Density (g/cm3): 8.36
Density before age hardening (g/cm3): 8.25
Elastic Modulus (kg/mm2 (103)): 13.4
Thermal Expansion Coefficient (20 °C to 200 °C m/m/°C): 17 x 10-6
Thermal Conductivity (cal/(cm-s-°C)): 0.25
Melting Range (°C): 870-980


Temper Designations of BE-CU Alloy 25 Beryllium Copper Strips:

Cuberyllium Designation ASTM Mechanical and Electrical Properties of Copper Beryllium Strip
Designation Description Tensile Strength
Yield Strength 0.2% offset Elongation Percent HARDNESS
B or C Scale
Electrical Conductivity
(% IACS)
A TB00 Solution Annealed 410~530 190~380 35~60 <130 45~78HRB 15~19
1/2 H TD02 Half Hard 580~690 510~660 12~30 180~220 88~96HRB 15~19
H TD04 Hard 680~830 620~800 2~18 220~240 96~102HRB 15~19

Mill hardened
930~1040 750~940 9~20 270~325 28~35HRC 17~28
SHM TM05 1030~1110 860~970 9~18 295~350 31~37HRC 17~28
XHM TM06 1060~1210 930~1180 4~15 300~360 32~38HRC 17~28


Product Photos:

300mm Wide Beryllium Copper Strips For Bell Relay Contact Spring 0


Applications of BE-CU Alloy 25 Beryllium Copper Alloy:

CUBERYLLIUM ®-172 is usually used for electrical industry, fasteners and industrial.

Electrical Industry: electrical switch and relay blades(switch parts, relay parts), clips, fuse clips, connectors, spring connectors, navigational indstruments, contact bridges, belleville washers;

Fasteners: washers, lock washers, fasteners, retaining rings, roll pins, screws, bolts;

Industrial: pump parts, springs, electrochemical, spline shafts, non sparking safety tools, flexible metal hose, housings for indtruments, bearings, bushings, valve seats, valve stems, disphragms, springs, welding equipment, rolling mill parts, valves, bourdon tubes, wear plates on heavy equipment, bellows.