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Titanium Gr 23 Rod

Beryllium Copper is a precipitation-hardening copper alloy valued for combining high mechanical strength with useful electrical and thermal conductivity. The composition of UNS C17200 is about 1.80% to 2.00% Be, and the balance is Cu, and it can be supplied in different tempers as per forming and performance requirements. In the age-hardened condition, it is characterized by high tensile strength, hardness, fatigue strength and wear and corrosion resistance. It is also non-magnetic and non-sparking, which make it ideal for electrical, aerospace, marine, oil & gas, tooling and precision engineering applications. Beryllium Copper can be produced in various forms, sizes, tempers, and finishes with inspection documentation as required. In India Sachin Steel is a trusted manufacturer and supplier of Beryllium Copper for various industrial applications.

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Table Of Content

Technical Data

Specifications of Beryllium Copper 

Parameter

Specification / Nominal Value

Core Flat Standard

ASTM B194, ASME SB194

Beryllium Content (C17200)

1.80% – 2.00%

Density

Approx. 8.25 g/cm³ (0.298 lb/in³) (varies slightly by temper and alloy)

Melting Range

865°C to 980°C (1590°F to 1800°F)

Thermal Conductivity (Aged)

105 W/m·K (High Strength) to 210 W/m·K (High Conductivity)

Electrical Conductivity

22% – 60% IACS (dependent on alloy grade and temper)

Available Tempers

Solution Annealed (A), Cold Worked (1/4 H, 1/2 H, H), Precipitation Aged (AT, HT)

Certifications

ISO 9001:2015, EN 10204 3.1 Mill Test Certificate per lot

Chemical Compositions of Beryllium Copper 

Element

Weight Percentage (%)

Beryllium (Be)

1.80 – 2.00%

Cobalt (Co) + Nickel (Ni)

0.20% min

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

0.60% max

Lead (Pb)

0.02% max

Iron (Fe)

0.10% max

Silicon (Si)

0.20% max

Aluminum (Al)

0.20% max

Copper (Cu)

Balance

Beryllium Copper Mechanical Properties 

Temper

Code

Tensile Strength (MPa / ksi)

Yield Strength (0.2% Offset) (MPa / ksi)

Elongation in 2 in. / 50 mm (%)

Hardness (Rockwell)

Solution Annealed

A (TB00)

415 – 585 / 60 – 85

180 – 240 / 26 – 35

35 – 60%

45 – 78 HRB

1/4 Hard

1/4 H (TD01)

515 – 620 / 75 – 90

415 – 550 / 60 – 80

10 – 35%

75 – 88 HRB

1/2 Hard

1/2 H (TD02)

585 – 725 / 85 – 105

515 – 650 / 75 – 95

5 – 25%

88 – 96 HRB

Full Hard

H (TD04)

720 – 890 / 105 – 130

650 – 825 / 95 – 120

2 – 10%

96 – 102 HRB

Annealed + Aged

AT (TF00)

1,140 – 1,310 / 165 – 190

965 – 1,170 / 140 – 170

4 – 10%

36 – 42 HRC

1/2 Hard + Aged

HT (TH02)

1,240 – 1,410 / 180 – 205

1,030 – 1,240 / 150 – 180

2 – 6%

38 – 44 HRC

Physical Properties of Beryllium Copper 

Property

Metric Value

Imperial Value

Density

8.25 g/cm³

0.298 lb/in³

Melting Point / Range

865°C – 980°C

1590°F – 1800°F

Electrical Conductivity (Annealed)

15 – 19% IACS

15 – 19% IACS

Electrical Conductivity (Aged)

22 – 28% IACS

22 – 28% IACS

Thermal Conductivity (20°C / Aged)

105 W/m·K

60.7 BTU/ft·h·°F

Coefficient of Thermal Expansion

17.0 × 10⁻⁶/K (20–200°C)

9.4 × 10⁻⁶/°F

Modulus of Elasticity (Young's)

125 – 130 GPa

18.1–18.9 × 10⁶ psi

Poisson's Ratio

0.30

0.30

Equivalent Grades of Beryllium Copper

Country / Standard

Alloy Name / Grade Standard

UNS / CDA Code

USA / ASTM

Alloy 25 / ASTM B194

UNS C17200 / CDA 172

ISO Standard

CuBe2

ISO CuBe2

European (EN)

CuBe2 / CW101C

EN 12163 / EN 1652

Germany (DIN)

CuBe2 / 2.1247

DIN 17666

Japan (JIS)

C1720 / C1720P / C1720R

JIS H3130 / JIS H3270

British (BS)

CB101

BS 2870 / BS 2874

Weight Chart of Beryllium Copper

Diameter (mm)

Diameter (Inches)

Approx. Weight (kg/meter)

Approx. Weight (lbs/foot)

6 mm

0.236 in

0.233 kg

0.157 lbs

10 mm

0.394 in

0.648 kg

0.435 lbs

12 mm

0.472 in

0.933 kg

0.627 lbs

16 mm

0.630 in

1.658 kg

1.114 lbs

20 mm

0.787 in

2.592 kg

1.742 lbs

25 mm

0.984 in

4.049 kg

2.721 lbs

30 mm

1.181 in

5.832 kg

3.919 lbs

40 mm

1.575 in

10.367 kg

6.966 lbs

50 mm

1.969 in

16.198 kg

10.885 lbs

Beryllium Copper Dimensions Chart

Thickness (mm)

Thickness (Inches)

Approx. Weight (kg/m2)

Approx. Weight (lbs/ft2)

0.5 mm

0.020 in

4.13 kg

0.85 lbs

1.0 mm

0.039 in

8.25 kg

1.69 lbs

1.5 mm

0.059 in

12.38 kg

2.54 lbs

2.0 mm

0.079 in

16.50 kg

3.38 lbs

3.0 mm

0.118 in

24.75 kg

5.07 lbs

5.0 mm

0.197 in

41.25 kg

8.45 lbs

6.0 mm

0.236 in

49.50 kg

10.14 lbs

10.0 mm

0.394 in

82.50 kg

16.90 lbs

12.0 mm

0.472 in

99.00 kg

20.28 lbs

20.0 mm

0.787 in

165.00 kg

33.79 lbs

25.0 mm

0.984 in

206.25 kg

42.24 lbs

Applications and Industrial Uses of Beryllium Copper

  • Electrical Connectors and Contacts
  • Precision Springs and Spring Contacts
  • Oil and Gas Downhole Tools
  • Non-Sparking Hand Tools
  • Aerospace Components
  • Marine and Subsea Components
  • Switches and Relay Components
  • Injection Molding and Precision Tooling
Application Industries

Frequently Asked Questions

FAQ – Beryllium Copper
What is Beryllium Copper?

Beryllium Copper is a copper-based alloy known for high strength, hardness, conductivity, fatigue resistance, and corrosion resistance.

What is Beryllium Copper made of?

Beryllium Copper is mainly copper with beryllium as the primary alloying element. C17200 contains about 1.80% to 2.00% beryllium.

What is UNS C17200 Beryllium Copper?

UNS C17200 is a copper-beryllium alloy commonly known as Alloy 25, with about 1.9% nominal beryllium content.

What does Alloy 25 mean in Beryllium Copper?

Alloy 25 is the commercial designation commonly used for UNS C17200 Beryllium Copper.

Is Beryllium Copper stronger than copper?

Yes. After precipitation hardening, Beryllium Copper can achieve much higher strength and hardness than pure copper.

Can Beryllium Copper be heat treated?

Yes. It can be solution heat treated and precipitation hardened to increase its strength and hardness.

What is Beryllium Copper used for?

It is used for electrical contacts, connectors, springs, switches, aerospace components, tooling, and oil and gas equipment.

Is Beryllium Copper electrically conductive?

Yes. Beryllium Copper retains useful electrical conductivity while providing much higher strength than pure copper.

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