Cobalt Base Wrough Products
Plate & Bar Stock: Alloys 6B & 6K

Chemical Composition: Percent
Alloy Co Ni Si Fe Mn Cr Mo W C
6B Bal. 3.0/X 2.0/X 3.0/X 2.0/X 28-32 1.5/X 3.5-5.0 .90-1.4
6K Bal. 3.0/X 2.0/X 3.0/X 2.0/X 28-32 1.5/X 3.5-5.5 1.4-1.9

Average Physical Properties
Physical Properties Temp. Deg. C Metric Untis Temp. Deg. F Standard Units
6B 6K 6B 6K
Desity 22 Kg/m³ 72 lb/in³
8387 8387 .303 .303
Melting Range 1265-1354 deg. C 2310-2470 deg. F
Electrical
Resistivity		 22 microhm-m 72 microhm-in.
.91 - 36 -
546 ohms per cir. mil. ft.
Thermal
Conductivity		 22 W/m * K 72 Btu-in./Sq. ft. - hr. - deg. F
14.8 - 103 -
Mean Coefficient
of Thermal
Expansion		 X 10 -6 m/m * K microinches/in. deg F
0-100
0-300
0-500
0-700
0-900		 13.9
14.5
15.0
15.8
16.9		 13.8
13.8
13.8
14.2
14.9		 32-212
32-572
32-932
32-1292
32-1652		 7.7
8.0
8.3
8.8
9.4		 7.7
7.7
7.7
7.9
8.3
Electrical
Conductivity
(Compared to Cu)		 22 1.9 - 72 1.9 -
Specific Heat Room J /Kg * K Room Btu/lb.-deg. F
423 - .101 -
Magnetic
Permeability
at 200 Oersteds
(15.9 A/m)		 22 <1.2 <1.2 72 <1.2 <1.2
Reflecting Power, % 57-70 - 57-70 -