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M25 Leaded Beryllium Alloy 5mm Copper Wire High Strength ASTM B197

M25 Leaded Beryllium Alloy 5mm Copper Wire High Strength ASTM B197

Alloy 5mm copper wire

ASTM 5mm copper wire

M25 copper alloy wire

Place of Origin:

china

Brand Name:

jinshunlai

Certification:

IOS

Model Number:

0.1mm-900mm

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Product Details
Application:
Electrical
Color:
Red
Conductor Material:
Copper
Product Name:
Solid Bare Copper Wire
RoHS Compliant:
Yes
Standards:
UL, CSA
Wire Gauge:
14 AWG
Color:
Red Yellow
Payment & Shipping Terms
Minimum Order Quantity
1kg
Price
contact us
Delivery Time
5day
Payment Terms
L/C, T/T , Western Union,D/P
Supply Ability
90000ton
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Product Description

 


Typical Physical Properties of Alloy 25(UNS.C17200) Copper Beryllium Alloy:

Density (g/cm3): 8.36
Density before age hardening (g/cm3): 8.25
Elastic Modulus (kg/mm2 (103)): 13.4
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

 

 

Mechanical and Electrical Properties of Alloy 25(UNS.C17200) Copper Beryllium Round Wires:

 

 

 

 

International Specification of Alloy 25(UNS.C17200) Copper Beryllium Alloy:

Product Type Temper Type
Bar ASTM B196
Military Mil-C-21657
Rod ASTM B196
Military Mil-C-21657
Wire ASTM B197, AMS4725, SAE J461,463, RWMA Class 4
European Standards CuBe2, Alloy 25, BrB2, DIN.2.1247, CW101C to EN

Note:

ASTM: American Society for Testing and Materials

SAE: Society of Automotive Engineers

AMS: Aerospace Materials Specification(Published by SEA)

RWMA: Resistance Welder Manufacturers' Association

Note: Unless otherwise specified, material will be produced by ASTM.

 

 

Key Technology of Beryllium Copper(Heat treatment)

Heat treatment is the most important process for this alloy system. While all copper alloys are hardenable by cold working, beryllium copper is unique in being hardenable by a simple low temperature thermal treatment. It involves two basic steps. The first is called solution annealing and the second, precipitation or age hardening.

Solution Annealing

For the typical alloy CuBe2Pb) the alloy is heated between 720°C and 860°C. At this point the contained beryllium is essentially “dissolved” in the copper matrix (alpha phase). By rapidly quenching to room temperature this solid solution structure is retained. The material at this stage is very soft and ductile and can be readily cold worked by drawing, forming rolling, or cold heading. The solution annealing operation is part of the process at the mill and is not typically used by the customer. Temperature, time at temperature, quench rate, grain size, and hardness are all very critical parameters and are tightly controlled by ohmalloy.

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.

 

Fabrication

JOINING TECHNIQUE SUITABILITY
Brazing Good
Butt Weld Fair
Capacity for Being Cold Worked Excellent
Capacity for Being Hot Formed Good
Coated Metal Arc Welding Good
Gas Sheilded Arc Welding Good
Machinability rating 50
Oxyacetylene Welding Not Recommended
Seam Weld Fair
Soldering Good
Spot Weld G

M25 Leaded Beryllium Alloy 5mm Copper Wire High Strength ASTM B197 0M25 Leaded Beryllium Alloy 5mm Copper Wire High Strength ASTM B197 1M25 Leaded Beryllium Alloy 5mm Copper Wire High Strength ASTM B197 2

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