MINGHUA supplies top-quality cobalt welding electrodes engineered for superior wear resistance, high-temperature stability, and corrosion protection. Our cobalt base alloy welding electrodes include:
AWS RCoCr-C (Co 1) cobalt welding rods have excellent wear and heat resistance at high temperatures. Recommended use for making valve seal inserts, rotating sealing ring, drill heads, cutter edge, etc.
AWS RCoCr-A (Co 6) cobalt-based alloy welding rod is the most widely used cobalt alloy, offering excellent mechanical properties across various temperature ranges. Recommended use for making valve seat material, hot shear blade, high temperature valve, turbine blade, etc.
AWS RCoCr-B (CO 12) cobalt welding rods have excellent resistance to high heat, corrosion and abrasion. Recommended use for making high-pressure valve, shear edge, sawteeth, etc.
AWS RCoCr-E (CO 21) cobalt welding rods have excellent resistance to high heat, corrosion and abrasion. Recommended use for making fluid valve, brass casting die, valve seat, etc.
Grade Color: Black: Co 1; Red: Co 6; Green: Co 12; Blue: Co 21.
Contact Minghua and direct order from the welding electrode factory.
Features of Cobalt Welding Electrodes Rods
Good high temperature strength,
Strong oxidation resistance,
Widely used in aviation engines, turbine impeller parts, manufacturing chemical equipment, Marine equipment, etc
Chemical Composition of Cobalt Welding Electrodes Rods
Alloy Nominal Analysis of Welding Electrode Other UNS ASME/AWS Hardness(HRC)
Co Cr W C Ni Mo Fe Si
Cobalt Base Alloy Bare Welding Electrodes
Stellite1 Bal. 32 12 2.45 ≤3 ≤1 ≤3 ≤2 ≤0.5 R30001 (SF)A5.21 51-56
ERCoCr-C
Stellite6 Bal. 30 4.5 1.2 ≤3 ≤1 ≤3 ≤2 ≤0.5 R30006 (SF)A5.21 40-45
ERCoCr-A
Stellite12 Bal. 30 8 1.4-1.8 ≤3 ≤1 ≤3 ≤2 ≤0.5 R30012 (SF)A5.21 46-51
ERCoCr-B
Stellite21 Bal. 28 - 0.25 3 5.2 ≤3 ≤1.5 ≤0.5 R30021 (SF)A5.21 28-40*
ERCoCr-E
Cobalt Welding Electrodes specification and reference current (AC or DC+):
Diameter(mm) 3.2 4 5
Length(mm) 350 350 350
Current(A) 120-160 140-190 150-210
For more information about welding equipment and welding consumables and automatic assembly line, please feel free to contact us!