MetcoClad 21 Cobalt Chromium Molybdenum Nickel Silicon Carbon Alloy Powder

Alternative and trade names
similar to Stellite 21 (Stellite is a registered trademark of Kennametal Inc.)
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Description

Oerlikon Metco’s CoCr[NiWSi]C products are inert gas atomized powders that are chemically homogeneous, exhibit minimal satellites and are freely flowing. They are designed and provide excellent results for a variety of applications such as laser cladding, thermal spray and PTA. These materials form coatings that are appropriate for wear and corrosion resistance in relatively high-temperature service conditions.


MetcoClad 21 has a similar chemistry to Stellite 21. Designed for laser cladding, MetcoClad 21 exhibits low dilution and deposits are nearly 100% dense.

This material data has been provided by Oerlikon Metco.

All metrics apply to room temperature unless otherwise stated. SI units used unless otherwise stated.
Equivalent standards are similar to one or more standards provided by the supplier. Some equivalent standards may be stricter whereas others may be outside the bounds of the original standard.

Ashby charts

Properties

General

PropertyValueComment

Particle size range

45 - 125 µm

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Nominal range -125 +45µm: +3% 125µm, -2% 45µm

Thermal

PropertyValue

Melting point

1295 - 1435 °C

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Chemical properties

PropertyValueComment

Carbon

0.2 %

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Chromium

27 %

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Cobalt

balance

Iron

3 %

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max

Molybdenum

5.5 %

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Nickel

2.75 %

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Other

1 %

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max

Silicon

1 %

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max

Technological properties

Property
Availability

Special Order

Chemical composition

CoCrMoFeNiSiC

Distribution

Global

Handling recommendations

Store in the original container in a dry location; Tumble contents prior to use to prevent segregation. Open containers should be stored in a drying oven to prevent moisture pickup.

Morphology

Spheroidal

Order number

1083480

Other

Choose MetcoClad 21 for applications where superior corrosion resistance is required, compared to the Metco 1220 series, especially in reducing environments. It also resists oxidizing acids like acetic, formic phosphoric and low-concentration sulfuric. Laser clad deposits of MetcoClad 21 have superior properties compared to conventionally welded overlays. In addition to high resistance to cavitation and galling, deposits of MetcoClad 21 resist high temperature metal-to-metal sliding wear with a low coefficient of friction and can be used on applications such as automotive piston rings. Laser clad surfaces exhibit superior impact resistance compared deposition using PTA (plasma transferred arc) welding.

Packaging size

10 lb (approx. 4.5 kg)

Processing history

Gas atomized

Processing methods

Atmospheric Plasma Spray, Laser Cladding, PTA

Safety data sheet

www.oerlikon.com/metco SDS No. 50-1653