: Products > Special Metal Division > Tungsten
  (µg/g)
Mn <5
Mo 40
N
<5
Na
5
Nb
<5
Ni
5
O
<5
P
20
Pb
<10
S
<2
Si
<10
Ti
<5
W
5
Zn
<5
Zr  <5
W
99.98%
Ag
<5
Al
10
As
<1
Ba
<2
C
<10
Ca
5
Cd
<1
Co
5
Cr
<10
Cu
5
Fe
20
H
<1
K
<5
Mg <5
 
Properties
Unit
Tungsten
Atomic Weight
g/g Atom
184
Melting Point
°C
3,410
Density
g/cm3 19.3
Linear Thermal
Expansion Coefficient
10-6/K
20°C
5.3
20~1,000°C
5.8
20~1,500°C
6.5
Specific Heat Joule/g.K 0.14
Thermal Conductivity W/m.K 129
Electrical Resistance m 0.055
Properties
Unit
Molybdenum
Tensile Strength N/mm2
0.5~1.0 thickness (mm)
1,300
1.0~5.0 thickness (mm)
800
Recrystallized
1,000
Compressive Strength N/mm2
1,150
Modulus of Elasticity KN/mm2
410
Modulus of Torsion KN/mm2
90~22
Hardness HV30
0.5~1.0 thickness (mm)
500
1.0~5.0 thickness (mm)
460
Recrystallized
360
Incipient
Recrystallization
°C
1,150
Complete
Recrystallization
°C
1,350