Beryllium Free Copper
(18000)
Beryllium Free Copper (18000) Class 3
Specification (18000)
C18000
Class 3 Beryllium Free
Beryllium Free Copper (180000) meets the mechanical requirements of RWMA Class 3
Copper.
C18000 is
utilized when a combination of very good mechanical strength along
with moderate electrical and thermal electrical conductivity are
required. C18000 is a viable substitute for C17500 and C17510
for many applications. C1800 is a heat treatable copper
alloy.
|
RWMA Class/(Temper) |
Alloy Number | Hardness |
Conductivity (%) |
Tensile Strength |
| Class 3 (HT) (Beryllium Free) |
18000 | B90-94 | 48-60 | 85-100 ksi |
Tempers
TB00 or A
This produces the softest form of the material. This
is the condition or temper resulting from heating the material to a
temperature sufficient to allow the beryllium to dissolve into a
solid solution within the copper base metal, followed by rapid
cooling.
Hardness (17510): B20-45
TF00 or AT
This process is often referred to as Aging, Age Hardening or Heat
Treating. This is the condition or temper resulting from the
application of a specific time and temperature combination.
This action produces an extreme strengthening effect within the
material. The tensile properties change from copper-like to
steel-like and the thermal and electrical properties also increase.
The specific combination of time and temperature applied determines
the final properties.
Hardness (17510): B92-100
TD04 or H
In Beryllium Copper this means that the material is
processed like the TB00/A temper material and then gets drawn
through a die to make a shape. The extra drawing through the
die makes the material harder.
Hardness (17510): B78-88
TH04 or HT
In Beryllium Copper this means that the material is
carefully annealed and then cold drawn to a specific size and then
heat treated.
Hardness (17510): B95-102