Enquire Now
+91 9029534448 sachinsteel51@hotmail.com

Beryllium Copper Wire Manufacturer and Supplier in India

HOME → Material → Beryllium Copper Products  → Beryllium Copper Wire

Beryllium Copper Wire

Beryllium Copper Wire is an age-hardened copper alloy wire that has been formulated for uses demanding high strength, springback, fatigue resistance, and electrical conductivity. Usually offered in the form of UNS C17200, Alloy 25, CuBe2, and CDA 172, it contains 1.80% to 2.00% Be. It age hardens to a tensile strength above 1500 MPa and a hardness up to HRC 45. It is produced to ASTM B197, with general requirements under ASTM B250, in annealed, drawn and age hardened tempers for precision forming, winding and machining. Wire is supplied on spools, in coils and in cut lengths, from 0.05 mm to 12.7 mm diameter. Sachin Steel Centre is a manufacturer and supplier of Beryllium Copper Wire in India, supplying spring, connector and contact wire for electronics, aerospace, automotive and industrial users, with an EN 10204 3.1 mill test certificate.   

Table Of Content

Technical Data

Specifications of Beryllium Copper Wire

Technical Parameter

Specification Standard / Range

Alloy UNS Designation

UNS C17200 (CDA 172 / Alloy 25 / CuBe2 / DIN 2.1247)

Governing Wire Standards

ASTM B197 / B197M (Standard Spec for Copper-Beryllium Alloy Wire), ASME SB197

General Requirements

ASTM B250 / B250M (General Requirements for Wrought Copper Alloy Wire)

Beryllium Range

1.80% to 2.00% Be

Diameter Range

0.05 mm to 12.7 mm (0.002 in to 0.500 in)

Dimensional Tolerances

Tolerances per ASTM B250; actual diameter tolerance by size confirmed at quotation

Available Tempers

Solution Annealed: TB00 (A)
Drawn: TD01 (1/4H), TD02 (1/2H), TD04 (H)
Age Hardened: TF00 (AT), TH01 (1/4HT), TH02 (1/2HT), TH04 (HT)

Put-Up Options

Plastic spools (DIN 100, DIN 160, DIN 200, DIN 250), catchweight coils, or straightened cut lengths

Density

Annealed: 8.25 g/cm³ (0.298 lb/in³)
Age Hardened: 8.36 g/cm³ (0.302 lb/in³)

Certification

EN 10204 3.1 Mill Test Certificate (MTC) supplied with every heat/lot

Chemical Composition of Beryllium Copper Wire

Chemical Element

Minimum (%)

Maximum (%)

Beryllium (Be)

1.80

2.00

Cobalt + Nickel (Co + Ni)

0.20

—

Cobalt + Nickel + Iron (Co+Ni+Fe)

—

0.60

Iron (Fe)

—

0.10

Lead (Pb)

—

0.02

Aluminum (Al)

—

0.20

Silicon (Si)

—

0.20

Copper (Cu)

Balance

Balance

Mechanical Properties of Beryllium Copper Wire

ASTM Temper Code

Legacy Temper Code

Condition

Tensile Strength (MPa)

Tensile Strength (ksi)

Elongation in 50 mm (%)

Hardness Range

TB00

A

Solution Annealed

410 to 590

60 to 85

30 to 60%

HRB 45 to 78

TD01

1/4H

Drawn Quarter Hard

520 to 720

75 to 105

10 to 40%

HRB 60 to 90

TD02

1/2H

Drawn Half Hard

620 to 830

90 to 120

5 to 25%

HRB 80 to 98

TD04

H

Drawn Hard

690 to 900

100 to 130

2 to 10%

HRB 96 to 102

TF00

AT

Aged from Annealed

1140 to 1380

165 to 200

3 to 10%

HRC 36 to 41

TH01

1/4HT

Aged from 1/4 Hard

1200 to 1450

175 to 210

2 to 8%

HRC 37 to 42

TH02

1/2HT

Aged from 1/2 Hard

1250 to 1520

180 to 220

1 to 5%

HRC 39 to 44

TH04

HT

Aged from Hard

1310 to 1620

190 to 235

1 to 4%

HRC 41 to 45

Physical Properties of Beryllium Copper Wire

Physical Property

Metric Units

Imperial Units

Density (Annealed)

8.25 g/cm³

0.298 lb/in³

Density (Age Hardened)

8.36 g/cm³

0.302 lb/in³

Melting Range

865°C to 980°C

1590°F to 1800°F

Modulus of Elasticity (Tension)

128 GPa

18.5 × 106 psi

Electrical Conductivity (Annealed)

15% to 19% IACS

15% to 19% IACS

Electrical Conductivity (Aged, C17200)

22% IACS minimum

22% IACS minimum

Thermal Conductivity (20°C, Aged)

105 W/m·K

60.7 BTU/ft·h·°F

Coefficient of Thermal Expansion (20–200°C)

17.0 × 10−6 /°C

9.4 × 10−6 /°F

Magnetic Permeability

Below 1.004 (virtually non magnetic)

< 1.004

Equivalent Grades of Beryllium Copper Wire

Country / System

Alloy Designation

Applicable Wire Standard

USA (UNS / CDA)

UNS C17200 / CDA 172 / Alloy 25

ASTM B197, ASME SB197, ASTM B250

USA (Aerospace)

C17200 Wire

AMS 4725

International (ISO)

CuBe2

ISO 1187

Europe (EN)

CuBe2 / CW101C

EN 12166 (Wire for general purposes)

Germany (DIN)

CuBe2 / 2.1247

DIN 17666 (Superseded by EN 12166)

Japan (JIS)

C1720W

JIS H3270 (Beryllium Copper Rod and Wire)

United Kingdom (BS)

CB101

BS 2873 (Copper Wire)

China (GB)

QBe2

GB/T 5231

Size Chart of Beryllium Copper Wire

Diameter (mm)

Diameter (in)

Cross Area (mm²)

Weight (kg/m)

Weight (lbs/1000 ft)

Length per kg (m)

0.05

0.0020

0.0020

0.000016

0.011

61,733

0.10

0.0039

0.0079

0.000065

0.044

15,433

0.125

0.0049

0.0123

0.000101

0.068

9,877

0.25

0.0098

0.0491

0.000405

0.272

2,469

0.356

0.0140

0.0995

0.000821

0.552

1,218

0.50

0.0197

0.1963

0.001620

1.09

617

0.60

0.0236

0.2827

0.002333

1.57

429

0.75

0.0295

0.4418

0.003645

2.45

274

0.85

0.0335

0.5675

0.004681

3.15

214

1.00

0.0394

0.7854

0.006480

4.35

154

1.20

0.0472

1.1310

0.009331

6.27

107

1.50

0.0591

1.7671

0.014579

9.80

69

2.00

0.0787

3.1416

0.025918

17.42

39

2.50

0.0984

4.9087

0.040497

27.21

24.7

3.00

0.1181

7.0686

0.058316

39.19

17.1

4.00

0.1575

12.5664

0.103673

69.66

9.65

5.00

0.1969

19.6350

0.161989

108.85

6.17

6.00

0.2362

28.2743

0.233263

156.75

4.29

8.00

0.3150

50.2655

0.414690

278.66

2.41

9.50

0.3740

70.8822

0.584778

392.95

1.71

12.70

0.5000

126.6769

1.045084

702.26

0.96

Beryllium Copper Flat Wire Weight Chart (kg per metre)

Thickness (mm)

Width 1.0 mm

Width 2.0 mm

Width 3.0 mm

Width 5.0 mm

Width 8.0 mm

Width 10.0 mm

0.10

0.0008 kg/m

0.0017 kg/m

0.0025 kg/m

0.0041 kg/m

0.0066 kg/m

0.0083 kg/m

0.20

0.0017 kg/m

0.0033 kg/m

0.0050 kg/m

0.0083 kg/m

0.0132 kg/m

0.0165 kg/m

0.50

0.0041 kg/m

0.0083 kg/m

0.0124 kg/m

0.0206 kg/m

0.0330 kg/m

0.0413 kg/m

1.00

0.0083 kg/m

0.0165 kg/m

0.0248 kg/m

0.0413 kg/m

0.0660 kg/m

0.0825 kg/m

1.50

0.0124 kg/m

0.0248 kg/m

0.0371 kg/m

0.0619 kg/m

0.0990 kg/m

0.1237 kg/m

2.00

0.0165 kg/m

0.0330 kg/m

0.0495 kg/m

0.0825 kg/m

0.1320 kg/m

0.1650 kg/m

Types of Beryllium Copper Wire

C17200 Beryllium Copper Wire

Gold plated C17200 beryllium copper wire

Gold plated C17200 beryllium copper wire

C17200 Beryllium Copper fine wire

C17200 Beryllium Copper fine wire

Beryllium Copper Alloy Cold Rolled Plate

Beryllium Copper Alloy Cold Rolled Plate

Beryllium Copper Alloy Coil

Beryllium Copper Foil

Beryllium Copper Foil

Request Quote on Types of Beryllium Copper Wire

Applications and Industrial Uses of Beryllium Copper Wire

  • Electrical Connector Contacts
  • Relay Springs
  • Switch Contacts
  • Aerospace Components
  • Automotive Sensor Components
  • Coil, torsion and extension springs
  • Probe and test pins
  • Micro motor brush and spring wire
Application Industries

Frequently Asked Questions

Beryllium copper wire is a high-strength copper alloy drawn wire containing 1.80% to 2.00% beryllium (UNS C17200). It combines steel-like tensile strength with high fatigue resistance, non-magnetic properties, and electrical conductivity.

These are different naming designations for the exact same beryllium copper alloy. UNS C17200 is the Unified Numbering System code, Alloy 25 is the commercial trade name, CDA 172 is the Copper Development Association designator, and CuBe2 is the European/ISO standard designation.

ASTM B197 / B197M is the primary governing specification for beryllium copper alloy wire, with dimensional tolerances and general testing requirements governed by ASTM B250 / B250M.

Yes. C17200 has good electrical conductivity: 22% IACS minimum after age hardening and 15 to 19% IACS in the annealed condition. For higher conductivity, ask about C17500 or C17510.

Yes, Beryllium Copper Wire is generally non-magnetic and provides excellent non-sparking properties.

Yes, C17200 Beryllium Copper Wire can be heat treated through solution treatment and aging to increase its strength and hardness.

It depends on temper and diameter. Annealed TB00 wire is about 410 to 590 MPa, and age hardened TH04 wire reaches about 1310 to 1620 MPa

Wind the spring in the annealed or drawn temper, then age harden at about 315°C for about 2 to 3 hours. Hold the spring in a jig and allow for a small shrink on aging. Confirm the cycle on the datasheet.

C17200 is the high strength grade with about 22% IACS minimum conductivity. C17510 is a high conductivity grade at about 45 to 60% IACS with lower strength.

Sachin Steel Centre supplies beryllium copper wire from 0.05 mm to 12.7 mm on spools, in coils and in cut lengths.

Sachin-Steel_Product-CTA
Beryllium Copper - Sidebar

    Enquire Now