Cobalt base No. 12 welding wire

Stellite 12: The ultimate tool for hardfacing”

In the field of industrial wear resistant materials,Stellite12 represents the pinnacle of wear resistance. As a tough member of the Stellite alloy family, it has an extremely high carbon and tungsten content in continuous casting cobalt-based wire. Compared to the classic Stellite 6, it sacrifices some toughness forsuperior wear resistance andhigher hardness, making it the ultimate solution for extreme wear conditions.

🔍What is the quality of German cobalt base 12 welding wire?

Stellite 12is a cobalt-based alloy welding wire withhigh carbon and high tungsten, and the corresponding standard grade isS112 orRCoCr-B.
The core characteristics of this wire are its extremely high hardness (HRC 40-47) and excellent abrasive wear resistance. It can maintain hardness at **800℃** high temperature, is a veritable red hard warrior.

✨Core Advantage: Why Choose It?

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Wear resistanceDue to the high content of carbon (C) and tungsten (W), a large number of hard carbides can be formed after welding with high quality cobalt base 12 welding wire. Its wear resistance is significantly better than Stellite 6, especially good at resistingstrong abrasive wear,adhesive wear andimpact wear.
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Performance at high temperatures”Stellite 12 can maintain its hardness and strength at room temperature under 500 ° C or even higher 800 ° C working environment, ordinary steel has already softened. This property makes it the preferred material for high temperature and pressure valves, hot shear blades and other parts.
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Good corrosion resistance and cavitation resistanceHigh content of chromium (Cr) element gives it excellent corrosion resistance, which can resist the corrosion of atmosphere, water vapor, seawater and various acid and alkali media. At the same time, it has excellent anti-cavitation (cavitation) ability, very suitable for water pump impeller, ship propeller and other fluid mechanical parts.

🏭typical application scenarios

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Cutting and crushing tools: wood saw teeth, chemical fiber scissors edge, crusher hammer head, digging teeth, etc.
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Valves and pumps: high temperature and high pressure valve sealing surface, high pressure pump sleeve, bushing and plunger.
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Metallurgy and rolling: hot rolling finishing roll, continuous casting machine parts.
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Special working conditions: continuous copper extrusion machine parts (do not react with copper), aircraft engine wear bushing.

📊product technical parameters

key index	parameters details
product name	ZD Cobalt Base 12/Stellite 12
chemical component	C: 1.2-1.7%(high carbon),Cr: 26-32%,W: 7.0-9.5%,Co: balance
hardfacing hardness	HRC 40-47(as-cast or as-welded)
temperature resistance	Long-term working temperature up to800℃
main use	Abrasive wear resistance, high temperature oxidation resistance, corrosion resistance welding
welding technology	TIG/MIG/plasma surfacing

💡Welding and machining guide

In order to ensure the best performance of Stellite 12, please pay attention to the following operating details:
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Preheating and cooling (key):
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Preheating: It is recommended that the preheating temperature be determined according to the base metal, usually above200℃-300℃.
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Slow cooling: After surfacing, the workpiece must be immediately put into dry insulating sand or straw ash to cool itslowly to avoid cracks due to too fast cooling.
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Welding process:
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TIG welding, plasma welding or oxyacetylene welding can be used.
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When using oxyacetylene flame, it is recommended to usecarbonized flame, and the base metal only needs to be heated to sweat state to join the welding wire, and the base metal should not be excessively melted.
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Machining recommendations:
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Stellite 12 is difficult to machine due to its high hardness and severe work hardening.
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It is recommended to usecemented carbide tools orceramic tools, and with sufficient coolant, using low-speed cutting.

📝sum up

Stellite 12is an industrial wear protector. It achieves a perfect balance between wear resistance, red hardness and corrosion resistance, although harder and more brittle than Stellite 6, but it is this characteristic that allows it to exhibit unmatched life and stability in the face of severe abrasive wear and high temperature shock.
If you need to solveheavy wear,high temperature softening orcavitation problems, the quality Stellite 12 is the best armor for your equipment.