Strip Form Beryllium Copper 0.25mm X 15mm 260 - 310HV RWMA Class 4

Place of Origin China
Certification ISO,SGS
Model Number RWMA Class 4
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 RWMA Class 4 In Form Strip Max Coil Wt. 2T
Thinnest Thick. 0.25mm Width 15mm
Standard ASTM B194, SAE J463, J461 Hardness 260~310HV
Safe Handling No Special Health Risk. Machining Property Good
Surface Bright/Polished Flatness Good
Temper 1/2H
High Light

RWMA Class 4 Beryllium Copper Alloy


Strip Form Beryllium Copper Alloy


Strip Form C17200 Beryllium Copper

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Product Description

RWMA Class 4 In Form Strip Size 0.25mm x 15mm Hardness 260-310HV

Product Normal Description:

Product Name Beryllium Copper Alloy
Grade RWMA Class 4
End Product Form in form strip
Standard ASTM B194
State of product 1/2H

Thickness: 0.25mm

Width: 15mm

Application Electrical industry


What are the Properties of Beryllium Copper?
Properties of BeCu:
Beryllium copper is a ductile, machinable, and weldable alloy.
BeCu has an excellent response to precipitation-hardening treatments.
BeCu has excellent thermal conductivity (62 Btu/ft-deg.F-H), and it is about 3-5 times more conducting than Tool steel.
It shows resistance to stress relaxation.
It is resistant to non-oxidizing acids such as hydrochloric acid (HCl) and carbonic acid (H2CO3), to plastic decomposition products, to abrasive wear, and galling.
It can be heat-treated for increased strength, durability, and electrical conductivity.
Beryllium copper displays the maximum strength (up to 1,400 MPa (200,000 psi)) of any copper-based alloy.


Chemical Composition of RWMA Class 4 Copper Alloy:

Numbering Be Co+Ni Cu Fe Pb Si Al
C17200 1.8-2.0 ≥0.2 Margin 0.15 - 0.15 0.15


Temper Designations of RWMA Class 4 Beryllium Copper Strip:

Cuberyllium Designation ASTM Mechanical and Electrical Properties of RWMA Class 4 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


Standard Tolerance of RWMA Class 4 Beryllium Copper Strip:

Tolerance Sheet
Standard Tolerance
over incl. plus or minus
0.03 0.08 0.003
0.08 0.1 0.004
0.1 0.15 0.005
0.15 0.2 0.006
0.2 0.25 0.007
0.25 0.4 0.008
0.4 0.55 0.009
0.55 0.7 0.01
0.7 0.9 0.015
0.9 1.5 0.025
Note: Tolerances apply to rolled and mill hardened strip.


Product Photo of RWMA Class 4 Beryllium Copper Strips:

Strip Form Beryllium Copper 0.25mm X 15mm 260 - 310HV RWMA Class 4 0



Key Technology of Beryllium Copper(Heat treatment)

Age Hardening

Age hardening significantly enhances the material’s strength. This reaction is generally carried out at temperatures between 260°C and 540°C depending on alloy and desired characteristics. This cycle causes the dissolved beryllium to precipitate as a beryllium rich (gamma) phase in the matrix and at the grain boundaries. It is the formation of this precipitate which causes the large increase in material strength. The level of mechanical properties attained is determined by the temperature and time at temperature. It should be recognized that beryllium copper has no room temperature aging characteristics.