: 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