Cobalt #12 CTD Electrode

Class: ECoCr-B
AWS: A5.13

DURAMAX COBALT #12 CTD ELECTRODE

Conforms to Certification: AWS A5.13 | ASME SFA 5.13

Weld Process: Shielded Metal Arc

AWS Chemical Composition Requirements
C = 1.0 – 1.7 Mn = 2.0 max Si = 2.0 max
Cr = 25 – 32 Ni = 3.0 max Mo = 1.0 max
Fe = 5.0 max W = 7.0 – 9.5 Co = Remainder
Other = 1.0 max

Product Description:
DURAMAX Cobalt #12 SMAW electrodes provide excellent hot hardness and abrasion resistance and good corrosion resistance. These properties make DMCobalt#12 well suited for wood cutting saws and bars and for industrial cutting applications for carpet, plastics, paper and chemical industries. This electrode is recommended for metal–to-metal abrasion involving high temperature and/or corrosive media with moderate impact. The weld deposits are smooth and it acquires a high polish in use. This alloy is nonmagnetic and is not forgeable. It can be machined with difficulty using carbide tools. It bonds well to all steels, including stainless.

Typical Applications:
– Chain Saws Blades – Chain Saw Bars
– Saw Teeth – Extrusion Dies
Deposited Chemical Compositon % (Typical)
C = 1.5 Mn = 0.9  Si = 1.1
Cr = 28.7 Ni = 2.6  Mo = 0.1
Fe = 3.1 W = 8.5  Co = Balance
Typical Deposit Characteristics:
– Abrasion Resistance Excellent – Hardness HRC 34 – 47
– Impact Resistance Good – Hot Weld Hardness Excellent
– Corrosion Resistance Good – Deposit layers  2 Layers Max
 – Magnetic  No – Metal-to-Metal Wear Excellent
 – Machineability  Difficult use Carbide tools – Deposit Cross Check  No

Recommended Operation of Welding Rods
Flat Welding

Diameter Amps DCEP
1/8   90 – 120
5/32 145 – 165
3/16 175 – 195