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HIGH STRENGTH COPPER BERYLLIUM ALLOYS
ALLOY 25 / ALLOY M25 / ALLOY 165


Alloy 25 (UNS C17200), Alloy M25 and Alloy 165 do not trade high strength for conductivity, making these the high performance alloys of choice for connectors and components in heavy-duty applications in harsh environments.

Alloy 25 provides the highest strength of any copper beryllium alloy, with electrical and thermal conductivity considerably greater than other high-strength copper alloys. Alloy M25, only available in rod and wire forms, offers similar strength to that of Alloy 25, but provides greater machinability with the addition of lead. Alloy 165 provides strength nearly as high as Alloy 25, but with a slightly lower beryllium content.

BENEFITS OF USING COPPER BERYLLIUM ALLOYS

Our advanced copper beryllium alloys offers several advantages over other types of materials, including:

  • High fatigue strength
  • High resistance to wear, corrosion, galling, and stress relaxation
  • An ultimate tensile strength that can exceed 200 ksi and hardness approaching HRC 45 (Alloy 25)
  • A minimum electrical conductivity of 22% IACS (International Annealed Copper Standard) (Alloy 25)
  • Excellent machinability due to the inclusion of lead (Alloy M25)

COPPER BERYLLIUM IS CONNECTING PEOPLE 



ADVANCED COPPER BERYLLIUM ALLOY APPLICATIONS

ALLOY 25

In the oil and gas industry, Alloy 25 is used to make oil drilling components such as MWD/LWD tools, drill collars and subs, flex subs and shafts, drill rods, drill bit bushings, valve components, pump shafts and fasteners. Alloy 25 strip is used to make essential parts in consumer electronics like pressure sensor bellows, burn-in and test socket contacts, computer processor socket contacts and electromagnetic shielding gaskets.

Read more about high strength Alloy 25, including physical and mechanical properties, forms, sizes and tolerances from our Alloy 25 data sheets.

ALLOY M25

Alloy M25, with the addition of lead, provides better machinability than Alloy 25, allowing this alloy to be fabricated into contacts for electronics, aircraft and automotive applications. It can also be machined into parts for the watch industry, contacts for circular connectors and coaxial connectors.

Learn about the highly machinable Alloy M25. Get all of the physical and mechanical properties, forms, sizes and tolerances from our Alloy M25 data sheets.

ALLOY 165

Alloy 165 rod and bar is used to make bushings, bearings and resistance welding components. Alloy 165 tube is used in crucial telecommunications applications including undersea instrument housings and repeater housings. Alloy 165 plate is used for wear plates and resistance welding components.

To learn more about high performance Alloy 165 physical and mechanical properties, forms, sizes and tolerances, download our Alloy 165 Alloy 165 data sheet.

COPPER BERYLLIUM SPECIFICATIONS & STANDARDS

Below are the specifications and standards set by ASTM International, SAE International, RWMA, European Standard EN, the Japanese Industrial Standard and the Military Standard.

Alloy 25 (C17200)

Alloy 25 Strip

Alloy 25 Rod & Bar

Alloy 25 Plate

Alloy 25 Tube

Alloy 25 Wire

Alloy 25 Forgings & Extrusions

ASTM B194

ASTM B196

ASTM B194

ASTM B251, ASTM B643,

ASTM B197

ASTM B570

AMS 4530,

AMS 4532

AMS 4533,

AMS 4534,

AMS 4650,

AMS 4651

AMS 4530,

AMS 4533,

AMS 4534,

AMS 4650,

AMS 4651

AMS 4535

AMS 4725

AMS 4650

SAE J461, SAE J463

SAE J461,

SAE J463

SAE J461,

SAE J463

SAE J461,

SAE J463

SAE J461,

SAE J463

SAE J461,

SAE J463

EN 1654,

EN 13148,

EN 14436

EN 1654,

EN 2163,

EN 12165,

EN 12167

 

EN 1654,

EN 12163,

EN 12165,

EN 12167

EN 12166,

EN 1654

EN 12163,

EN 12420

 

GB 5233,

GB 4431

 

GB 5233,

GB 4431

GB5233,

GB3134

 

JIS H3130

JIS H 3270

JIS H 3130

JIS H 3270

JIS H 3270

 

 

RWMA Class 4

RWMA Class 4

RWMA Class 4

 

RWMA Class 4

 

BMS 7-353 Type 2

 

BMS 7-353 Type 2

 

 

 

MIL-C-21657

 

MIL-C-21657

 

 

QQC-533

 

 

 

 

 


Alloy M25

Alloy M25 Rod

Alloy M25 Wire

ASTM B196

ASTM B197

EN 12164

EN 12164, EN 1216

MIL-C-2165

 


Alloy 165

Alloy 165 Rod & Bar

Alloy 165 Plate

Alloy 165 Tube

Alloy 165 Forgings & Extrusions

ASTM B196

ASTM B194

 

ASTM B570

SAE J461,
SAE J463

SAE J461,

SAE J463

SAE J461,

SAE J463

SAE J461,

SAE J463

RWMA Class 4

RWMA Class 4

RWMA Class 4

RWMA Class 4

 

JIS H 3130

 

 


Does your application need the strongest copper beryllium alloy?

Contact our engineers and technical staff to find which of these advanced, high strength alloys is right for your application.