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China 315000
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Copper saddle ring
we can also supply copper saddles.
The following is the general properties for copper.
General properties
Name
,
symbol
,
number
copper, Cu, 29
Element category
transition metal
Group
,
period
,
block
11
,
4
,
d
Standard atomic weight
63.546
(3)
g·mol
−1
Electron configuration
[
Ar
] 3d
10
4s
1
Electrons
per
shell
2, 8, 18, 1 (
Image
)
Physical properties
Phase
solid
Density
(near
r.t.
)
8.94
g·cm
−3
Liquid
density
at
m.p.
8.02 g·cm
−3
Melting point
1357.77
K
, 1084.62 °
C
, 1984.32 °
F
Boiling point
2835
K
, 2562 °
C
, 4643 °
F
Heat of fusion
13.26
kJ·mol
−1
Heat of vaporization
300.4
kJ·mol
−1
Specific heat capacity
(25 °C) 24.440 J·mol
−1
·K
−1
Vapor pressure
P
/Pa
1
10
100
1 k
10 k
100 k
at
T
/K
1509
1661
1850
2089
2404
2834
Atomic properties
Oxidation states
+1,
+2
, +3, +4
(mildly
basic
oxide)
Electronegativity
1.90 (Pauling scale)
Ionization energies
(
more
)
1st: 745.5
kJ·mol
−1
2nd: 1957.9 kJ·mol
−1
3rd: 3555 kJ·mol
−1
Atomic radius
128
pm
Covalent radius
132±4
pm
Van der Waals radius
140
pm
Miscellanea
Crystal structure
face-centered cubic
Magnetic ordering
diamagnetic
Electrical resistivity
(20 °C) 16.78 nΩ·m
Thermal conductivity
(300 K) 401 W·m
−1
·K
−1
Thermal expansion
(25 °C) 16.5 µm·m
−1
·K
−1
Speed of sound
(thin rod)
(
r.t.
) (annealed)
3810
m·s
−1
Young's modulus
110–128 GPa
Shear modulus
48 GPa
Bulk modulus
140 GPa
Poisson ratio
0.34
Mohs hardness
3.0
Vickers hardness
369 MPa
Brinell hardness
874 MPa
CAS registry number
7440-50-8
Most stable isotopes
Main article:
Isotopes of copper
iso
NA
half-life
DM
DE
(
MeV
)
DP
63
Cu
69.15%
63
Cu is
stable
with 34
neutrons
65
Cu
30.85%
65
Cu is
stable
with 36
neutrons
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