High Conductivity C1100 Copper Tape 0.1mm-0.5mmx20-250mm For Sale
Ohmalloy Material Co.,Ltd is the leader in the manufacture of
beryllium-copper alloys. We actively participate in all
environmental studies made on all substances used in our products.
Our priority is to comply with all legal regulations in force to
ensure the continued existence of our products to our clients.
Beryllium-Copper-alloys are mainly based on copper with a beryllium
addition. High strength beryllium copper alloys contain 0.4-2% of
beryllium with about 0.3 to 2.7% of other alloying elements such as
nickel, cobalt, iron or Lead. The high mechanical strength is
achieved by precipitation hardening or age hardening.
It is the best high-elastic material in copper alloy. It has high
strength, elasticity, hardness, fatigue strength, low elastic
hysteresis, corrosion resistance, wear resistance, cold resistance,
high conductivity, no magnetism, no impact, no sparks, etc. A range
of excellent physical, chemical and mechanical properties
The best combination of characteristics of the copper-based alloy
The copper-beryllium alloys have a wide combination of mechanical
and electrical properties which is unique for copper alloys. The
mechanical strength achieved after heat treatment ranks
highest amongst all the copper alloy materials and is combined with
a high electrical conductivity which outperforms that of bronzes.
High Strength & Elastic Modulus
Beryllium Copper alloys can achieve very high mechanical properties
after heat treatment, up to 1500 Mpa in tensile strength and
hardness as high as 450 Vickers.
The strength of these alloys allow for the design of smaller,
lighter components that can endure high bending stresses when used
as springs material.
Beryllium Copper can be formed into complicated shapes in an
annealed or cold-worked temper.The highest mechanical properties can be achieved with proper
heat-treatment after forming.
High Fatigue Strength
Beryllium Copper exhibits excellent resistance to fatigue under
reverse bending (up to 300 MPa) which qualifies its use in applications where other alloy fail to provide the same level of
High Electrical conductivity
Beryllium Copper exhibit a high electrical conductivity ranges from
22 to 70% IACS depending on the alloys and temper. Beryllium Copper
is often used as high current density spring material.
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.
For the typical alloy CuBe1.9 (1.8- 2%) 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 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
Our alloys combine a range of properties particularly suited to
meet the exacting requirements of many applications in the
automotive, electronic, aeronautical, Oil&Gas, watch,
electro-chemical industries, etc. Beryllium Copper is widely used
in those fields as contact springs in various applications like
connectors, switches, relays, etc