Commom Parameter ntawm Molybdenum Tungsten Tatanlum Niobium

Molybdenum

Tungsten

Tatanlum

Niobium

Chromium

Hardness (20 ℃)

Kev ntxhov siab-relief annealed: >

220 (HV10)

recrystallized > 160 - 180 [HV10]

Kev ntxhov siab-relief annealed: >460 (HV30)

recrystallized >360 (HV30)

Deformed: 120-220 [HV10]

recrystallized: 80-125 [HV10]

deformed: 110 - 180 [HV10] recrystallized: 60 - 110 [HV10]

180-250 [HV10]

Modulus ntawm elasticity (20 ℃)

320 [Gpa]

405 [Gpa]

186 [Gpa]

104 [Gpa]

294 [Gpa]

Coefficient ntawm linear thermal expansion (20 ℃)

5.2 · 10-6

[m/(m·K)]

4.4 · 10-6

[m/(m·K)]

6.4 · 10-6

[m/(m·K)]

7.1 · 10-6

[m/(m·K)]

6.2 · 10-6

[m/(m·K)]

Thermal conductivity (20 ℃)

142 [W/(m·K)]

164

[W/(m·K)]

57.5 ib

[W/(m·K)]

53.7 ib

[W/(m·K)]

93.7 ua

[W/(m·K)]

Cov cua kub tshwj xeeb (20 ℃)

0.25

[J/(g·K)]

0.13

[J/(g·K)]

0.14 [J/(g·K)]

0.27 ib

[J/(g·K)]

0,45 ib

[J/(g·K)]

Hluav taws xob conductivity (20 ℃)

17.9 · 106

[1/(Ω·m)]

18.2 · 106

[1/(Ω·m)]

8 · 106[1/(Ω·m)]

7.1 · 106[1/(Ω·m)]

7.9 · 106

[1/(Ω·m)]

Kev tiv thaiv hluav taws xob tshwj xeeb (20 ℃)

0,056 ib

[(Ω·mm2) / m]

0.055 ib

[(Ω·mm2) / m]

0.125 Nws

[(Ω·mm2)/]

0.141 ib

[(Ω·mm2) / m]

0.127 ib

[(Ω·mm2) / m]

Electron ua haujlwm

4,39 [eV]

4.54 [eV]

4.3 [eV]

4.3 [eV]

4,5 [eV]

Recrystalization

kub

1100 ℃

1350 ℃

900-1450 ℃

850-1,300 ° C


Post lub sij hawm: Sep-29-2019