???? ?????
????? ??? ???? ???, ????, ?????, ???? ???? ?? ???? Co ?????? ????? 27. ????? ????? ?????? ????? ????????? ????? ??? ??? ??? ????? ??????? ??????, ?????? ???? ?????? ??? ?? ????? ?? ??? ??? ???? ???????, ????? ????? ?????? ?? ??? ???? ????? ?? 1735 ??? ?????? ?????.
????? ???? ????? ??????? ???????, ????? ????, ????? ????. ????? ???? ???? ??? ???? ???? ?????? ???????, ??????, ???, ?????, ?????. ?????-60 ??? radioisotope ???? ?????, ????? ????? ??????? ?? ???? ??? ?????? ???????.
????? ??? ???? ???? ????? ??? ??????? ?? ????? ????? ????? ?? coenzymes ???? cobalamins. ??? ?????? B12 ??????? ???? ????? ???????. ????? ??? ?? ???? ?????? ????????, ???? ???????, ????? ????? ?????? ????? ??? ?????.
????? ???? ?????:
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*?????? ???? ?????? ????? ?? ??????? ????, ????????
Cobalt Powder Grades:
Grade |
F.s.s.s(um) |
Oxygen% Max. |
Cobalt% |
Scott density g/in3 |
|
Type A |
Type B |
||||
Co06 |
0.6-0.9 |
0.6 |
≥99.8 |
7-9 |
8-11 |
Co12 |
1.0-1.4 |
0.5 |
≥99.8 |
8-10 |
11-13 |
Co25 |
2.0-3.0 |
0.4 |
≥99.8 |
9-13 |
13-15 |
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Element |
Max. % |
Typical % |
C |
0.03 |
0.02 |
Ca |
0.02 |
0.005 |
Cu |
0.01 |
0.005 |
Fe |
0.03 |
0.008 |
Mg |
0.01 |
0.002 |
Mn |
0.01 |
0.001 |
Na |
0.02 |
0.005 |
Ni |
0.02 |
0.01 |
S |
0.005 |
0.0005 |
Si |
0.01 |
0.002 |
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Purity % |
99.0 |
Melting Point °C |
1495 |
Boiling Point °C |
2900 |
Density G/Cm3 |
8.92 |
Vickers Hardness @ 20 °C |
253 |
Coef. of Exp. @ 20 °C |
12.5 x 10-6 |
Elec Resistivity Microhm-Cm |
6.24 |
Crystal Structure |
Hex |
Appearance |
Grey |
?? ?? ?? ????? ????? ?????, ?? ???? ????? ????? ????"? ?????:sales@chinatungsten.com ?? ??????:+86 592 5129696.
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2.E-catalog of Tungsten Powder