CuBe2 — C17200 (Alloy 25)
CuBe2--C17200 (CDA 172) Beryllium Copper is the most commonly utilized Copper Beryllium alloy and is notable for its highest strength and hardness compared to commercial copper alloys.
CuBe2 — C17200 (Alloy 25)
CuBe2--C17200 (CDA 172) Beryllium Copper is the most commonly utilized Copper Beryllium alloy and is notable for its highest strength and hardness compared to commercial copper alloys. C17200 alloy contains appr. 2% of beryllium and achieves its ultimate tensile strength can exceed 200 ksi, while the hardness approaches Rockwell C45. Meanwhile, the electrical conductivity is a minimum of 22% IACS in the fully aged condition.C17200 also exhibits exceptional resistance to stress relaxation at elevated temperatures.
Where C17200 Is Used
Typical end uses published by ALB for this grade.
Electrical Industry
Electrical Switch and Relay Blades, Fuse Clips, Switch Parts, Relay parts, Connectors, Spring Connectors, Contact Bridges, Belleville Washers, Navigational Instruments, Clips
Fasteners
Washers, Fasteners, Lock Washers, Retaining Rings, Roll Pins, Screws, Bolts
Industrial
Pumps, Springs, Electrochemical, Shafts, Non Sparking Safety Tools, Flexible Metal Hose, Housings for Instruments, Bearings, Bushings, Valve Seats, Valve Stems, Diaphragms, Springs, Welding Equipment, Rolling Mill Parts, Spline Shafts, Pump Parts, Valves, Bourdon Tubes, Wear Plates on Heavy Equipment, Bellows
Specifications And Material Data
| Be | 1.85-2.10% |
|---|---|
| Co+Ni | 0.20% Min. |
| Co+Ni+Fe | 0.60% Max. |
| Cu | Balance |
Copper plus additions equal 99.5% minimum.
| Density (g/cm3) | 8.36 |
|---|---|
| Density before age hardening (g/cm3) | 8.25 |
| Elastic Modulus (kg/mm2 (103)) | 13.40 |
| 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 |
1). the units are based upon Metric. 2). the typical physical properties apply to age hardened products.
Sizes And Product Forms
Available Sizes
Custom Diameter & Sizes, Random Mill lengths
Available Products And Forms
Plate, Sheet, Disks, Flat bars, Square bars, Rectangular bars
Custom shapes are available upon request.
International Specification
| Sheets | ASTM B194 |
|---|---|
| Plates | ASTM B194, SAE J461,463; AMS4530,4533,4534,AMS4650,4651; RWMA Class 4. |
| European Standards | CuBe2, Alloy 25, QBe2, BrB2, DIN 2.1247, CW101C to EN |
Unless otherwise specified, material will be produced to ASTM.
Abbreviations
- ASTM — American Society for Testing and Materials
- SAE — Society of Automotive Engineers
- AMS — Aerospace Materials Specification (Published by SAE)
- RWMA — Resistance Welder Manufacturers' Association
Tempers And Mechanical Data
The Mechanical Properties will be available on request from customers.
| Sheets | A(TB00),1/4 H(TD01),1/2 H(TD02),H(TD04),AT(TF00) |
|---|---|
| Plates | A(TB00),H(TD04),AT(TF00),HT(TH04) |
Frequently Asked Questions
Answers drawn from the ALB technical data for this page.
What is the chemical composition of C17200?
C17200 is supplied to the following nominal composition:
- Be: 1.85-2.10%
- Co+Ni: 0.20% Min.
- Co+Ni+Fe: 0.60% Max.
- Cu: Balance
What are the typical physical properties of C17200?
Typical values published by ALB for C17200:
- Density (g/cm3): 8.36
- Density before age hardening (g/cm3): 8.25
- Elastic Modulus (kg/mm2 (103)): 13.40
- 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
Which international specifications does C17200 meet?
- Sheets: ASTM B194
- Plates: ASTM B194, SAE J461,463; AMS4530,4533,4534,AMS4650,4651; RWMA Class 4.
- European Standards: CuBe2, Alloy 25, QBe2, BrB2, DIN 2.1247, CW101C to EN
Can you supply mechanical property data for C17200?
The Mechanical Properties will be available on request from customers.
Which tempers are most commonly used?
- Sheets: A(TB00),1/4 H(TD01),1/2 H(TD02),H(TD04),AT(TF00)
- Plates: A(TB00),H(TD04),AT(TF00),HT(TH04)
Which product forms and sizes are available?
Custom Diameter & Sizes, Random Mill lengths Plate, Sheet, Disks, Flat bars, Square bars, Rectangular bars Custom shapes are available upon request.
How do I request a quotation?
Email the grade, temper, dimensions and quantity to [email protected]. Unless otherwise specified, material is produced to ASTM.
Quote C17200 To Your Specification
Send grade, temper, dimensions and quantity. Custom shapes are available on request.