High precision seamless tubes are manufactured by Fine Tubes to exacting customer specifications

Ductile Cobalt Strip

AMETEK Specialty Metal Products has applied the high purity wrought powder compaction process to Ductile Cobalt Alloys in order to produce multiple ductile cobalt strip products generally used by weld wire manufacturers as sheathing for flux cored and metal cored hardfacing materials. These alloys range from 80 to 95% cobalt with Iron or Iron-Nickel additions to improve ductility for drawing operations.

Ductile cobalt alloys include 580, 591, 595.

High purity cobalt includes 599. Additional sheathing alloys are available in Pure Nickel and blended grades of Nickel-Chrome alloys. These alloys are also produced to ensure the highest ductility. The Nickel-Chrome materials are available in standard grades of 10%, 20%, 30% and 35% Chrome with balance Nickel. Silicon additions are also available. More information is available on our Weld Wire Products page.

Ductile Cobalt Strip

580 Alloy 591 Alloy 595 Alloy 595G Alloy
Cobalt (Co) 80.0% 91.0% 94.0% 95.0%
Iron (Fe) 5.0% 5.0% 6.0% 5.0%
Nickel (Ni) 15.0% 4.0% 0.0% Trace
Tensile Strength (ksi) 80 ksi
(552 MPa)
78 ksi
(537 MPa)
80 ksi
(552 MPa)
75 ksi
(517 MPa)
Yield Strength (ksi) 20
ksi (138 MPa)
30 ksi
(207 MPa)
35 ksi
(241 MPa)
22 ksi
(152 MPa)
Elongation 50% 75% 75% 40%
Hardness 145 VHN 125 VHN 125 VHN 150 VHN
Ductile cobalt in strip form is used for hardfacing welding wire in Oil & Gas and Industrial Applications. It is also used as a catalyst for synthetic diamond production.

AMETEK 599 is the highest purity cobalt strip available in the United States. Applications include cobalt 60 gamma radiation sources, anodes for electroplating, high-temperature magnetic applications, and X-ray tube targets.
  • Excellent ductility and formability
  • Ductile strip has more than double the elongation value of high-purity cobalt strip