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Cobalt Welding Rod RCoCr-C (Co 1), RCoCr-A(Co 6), RCoCr-B (Co 12), RCoCr-B (Co 12)

MINGHUA supplies top-quality cobalt welding rods engineered for superior wear resistance, high-temperature stability, and corrosion protection. Our cobalt base alloy welding rods 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.

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Welding Consumables

Features of Cobalt Welding 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 Rods

AlloyNominal Analysis of Welding ElectrodeOtherUNSASME/AWSHardness(HRC)
CoCrWCNiMoFeSi
Cobalt Base Alloy Bare Welding Electrodes
Stellite1Bal.32122.45≤3≤1≤3≤2≤0.5R30001(SF)A5.2151-56
ERCoCr-C
Stellite6Bal.304.51.2≤3≤1≤3≤2≤0.5R30006(SF)A5.2140-45
ERCoCr-A
Stellite12Bal.3081.4-1.8≤3≤1≤3≤2≤0.5R30012(SF)A5.2146-51
ERCoCr-B
Stellite21Bal.28-0.2535.2≤3≤1.5≤0.5R30021(SF)A5.2128-40*
ERCoCr-E


Cobalt Welding Electrodes specification and reference current (AC or DC+):
Diameter(mm)3.245
Length(mm)350350350
Current(A)120-160140-190150-210


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Contact Us
+8615020018612 aliya@amhmachine.com
4 floors, building 3, zhongrun centry centre, No.12111 of jingshi road, lixia district, Jinan, Shandong, China
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Contact Us
+8615020018612 aliya@amhmachine.com
4 floors, building 3, zhongrun centry centre, No.12111 of jingshi road, lixia district, Jinan, Shandong, China
Follow Us