Material Product Data Sheet

Tungsten Carbide – 12 % Cobalt Powders

Thermal Spray Powder Products: Quick Facts

Woka™ 3101, Woka 3102, Woka 3103,
Classification Carbide, tungsten-based
Woka 3104, Woka 3105, Woka 3106, Woka 3108,
Chemistry 88WC-12Co
Woka 3110 FC, Woka 3111 FC, Woka 3118
Manufacture Agglomerated and sintered
1 Introduction Morphology Spheroidal
These products are spheroidal powders for thermal spraying Purpose Wear resistance
containing 88 % tungsten carbide as a hard material and a Apparent Density 2.9 – 5.3 g/cm3
cobalt matrix that functions as a binder material for the car-
Flowability Free-flowing powder
bide particles. All products are agglomerated and sintered
Service Temperature ≤ 500 °C (930 °F)
powders
Process HVOF or atmospheric plasma spray
Coatings of these materials are harder compared to coatings
of 83WC-17Co as a result of higher tungsten carbide levels.
Coatings are resistant to sliding wear, hammer (impact) wear,
abrasion and fretting at temperatures up to 500 °C (930 °F)
in non-corrosive media.

Coatings that contain tungsten carbide protect substrates

from the effects of fretting, abrasive grains, particle erosion,
cavitation and dynamic contact with hard surfaces. In partic-
ular, these materials can be used for abrasion-resistant coat-
ings in dry, non-corrosive environments at temperatures up
to 500 °C (930 °F).

HVOF and APS (using a TriplexPro™ series gun) coatings of

these materials are dense and show good bond strength.

1.1 Typical Uses and Applications

Tungsten carbide – 12 cobalt materials from Oerlikon Metco
are among the best-known thermal spray powders for use in
wear applications at service temperatures below 500 °C
(930 °F) in non-corrosive media. Typical applications include:
nn Steel rolls
nn Sink rolls in zinc pots
nn Corrugating rollers
nn Agricultural rasp bars
nn Exhaust fans
nn Conveyor screws
nn Sucker rod couplings
nn Thread bars
nn Pump housings
nn Impeller shafts
SEM Photomicrographs of Woka 3102 showing powder morphology (top) and
microstructure (bottom).

DSMTS-0044.7 – 88% WC / 12% Co Agglomerated and Sintered Powders

© 2017 Oerlikon Metco 1
2 Material Information

2.1 Chemical Composition

Product Weight Percent (nominal)

Tungsten Cobalt Carbon (total) Iron (max)
Woka 3101 Balance 10.5 – 13.5 5.0 – 5.8 0.2
Woka 3102 Balance 10.5 – 13.5 5.0 – 5.8 0.2
Woka 3103 Balance 10.5 – 13.5 5.0 – 5.8 0.2
Woka 3104 Balance 10.5 – 13.5 5.0 – 5.8 0.2
Woka 3105 Balance 10.5 – 13.5 5.0 – 5.8 0.2
Woka 3106 Balance 10.5 – 13.5 5.0 – 5.8 0.2
Woka 3108 Balance 10.5 – 13.5 5.0 – 5.8 0.2
Woka 3110 FC Balance 10.5 – 13.5 5.0 – 5.8 0.2
Woka 3111 FC Balance 10.5 – 13.5 5.0 – 5.8 0.2
Woka 3118 Balance 10.5 – 13.5 5.0 – 5.8 0.2

2.2 Particle Size Distribution and Apparent Density

Product Nominal Range Primary Carbide Apparent Density

(µm) Grain Size (g/cm3)
Woka 3101 –53 +20 Medium 4.7 – 5.3
Woka 3102 –45 +15 Medium 4.7 – 5.3
Woka 3103 –45 +11 Medium 4.6 – 5.2
Woka 3104 –30 +10 Medium 4.5 – 5.1
Woka 3105 –38 +10 Medium 4.6 – 5.2
Woka 3106 –53 +15 Medium 4.7 – 5.3
Woka 3108 -90 +45 Medium 4.7 – 5.3
Woka 3110 FC –25 +5 Fine 4.6 – 5.2
Woka 3111 FC –20 +5 Fine 4.6 – 5.2
Woka 3118 -75 +45 Medium 4.7 – 5.3

nn Particle size analysis using laser diffraction (Microtrac)

nn Other particle size distributions are available on request for Woka-brand products

2.3 Key Selection Criteria when a very smooth finished surface is needed. To spray
nn Select a material appropriate for the recommended spray these fine materials, specific parameters are required.
process and spray gun to be used (refer to Section 2.5). Please ask your Oerlikon Metco Account Representative
nn For the lowest possible ‘as-sprayed’ surface roughness, for a parameter sheet.
choose a material with the lowest possible particle size nn Different particle size distributions of Woka 31XX series
distribution and carbide particle grain size. products allow their use in a wide range of HVOF and
nn To achieve extremely smooth as-sprayed surfaces, use plasma spray guns. These materials produce hard,
Woka 3110 FC or Woka 3111 FC. Their fine particle size well-bonded coatings that are resistant to abrasion, ero-
combined with their fine primary carbide grain size pro- sion and sliding wear. Woka 31XX series materials are not
duces as-sprayed surface roughness values of Ra 1.5 to designed for use in aerospace and/or turbine applications
2.5 µm. This makes these products perfect when surface and cannot be certified to these specifications.
finishing is too costly, such as for corrugating rollers or

DSMTS-0044.7 – 88% WC / 12% Co Agglomerated and Sintered Powders

© 2017 Oerlikon Metco 2
2.4 Related Products series products (see datasheets DSMTS-0056,
nn For better corrosion resistance choose: DSMTS-0059, respectively).
nn A tungsten carbide product that contains chromium nn When service temperatures exceed 700 °C (1290 °F),
within the binder matrix such as Woka 365x series choose a chromium carbide material with a nickel-chro-
products, Metco 516x series products, Metco 5847 mium matrix such as Woka 71xx, Woka 72xx or
(see datasheet DSMTS-0025) or Woka 360x series Woka 73xx series products (see datasheets
products (see datasheet DSMTS-0051). DSMTS-0027, DSMTS-0031 and DSMTS-0058,
nn Chromium carbide materials such as Woka 71xx, respectively).
Woka 72xx or Woka 73xx series products (see data- nn If higher hardness or better abrasion resistance is re-
sheets DSMTS-0027, DSMTS-0031 and DS- quired, choose a tungsten carbide material with a co-
MTS-0058, respectively). balt-chromium matrix such as Woka 365x series prod-
nn For applications where service temperatures are greater ucts, Metco 516x series products, Metco 5847 (see
than 500 °C (930 °F), but less than 700 °C (1290 °F), datasheet DSMTS-0025) or Woka 360x series products
choose a material that contains both chromium carbide (see datasheet DSMTS-0051).
and tungsten carbide, such as Woka 75xx or Woka 37xx

2.5 Recommended Spray Process and Spray Guns

Product HVOF HVAF APS

DiamondJet WokaJet / K2 / CJS Top Gun / TriplexPro-200
WokaStar / Jet Kote HV2000 / 9MB / F4, etc.
JP5000
Woka 3101
Woka 3102
Woka 3103
Woka 3104
Woka 3105
Woka 3106
Woka 3108
Woka 3110 FC
Woka 3111 FC
Woka 3118

3 Coating Information

3.1 Key Thermal Spray Coating Information

Specification Data (depending on spray gun and product chosen)

Microhardness HV0.3 850 – 1400
Macrohardness HR15N > 90
Wear Rate ASTM G65 B < 6 mm3
Porosity < 1 %
Corrosion Resistance Not recommended for corrosive media
Deposition Efficiency 40 % – 65 %
Maximum Service Temperature 500 °C 930 °F

DSMTS-0044.7 – 88% WC / 12% Co Agglomerated and Sintered Powders

© 2017 Oerlikon Metco 3
3.2 Coating Parameters Recommended Spray Guns
Please contact your Oerlikon Metco Account Representative HVOF Atmospheric Plasma
for parameter availability. For specific coating application Water-cooled DiamondJet TriplexPro series
­requirements, the services of Oerlikon Metco’s Coating Air-cooled DiamondJet Metco 9MB series
­Solution Centers are available.
WokaJet Metco F4 series
WokaStar
JP5000 (Praxair / Tafa)

4 Commercial Information

4.1 Ordering Information and Availability

Product Order No. Package Size Availability Distribution

Woka 3101 1041095 5 kg (approx. 11 lb) Stock Europe
1041049 10 lb (approx. 4.5 kg) Stock Americas
Woka 3102 1041096 5 kg (approx. 11 lb) Stock Europe
1041050 10 lb (approx. 4.5 kg) Stock Americas
Woka 3103 1041097 5 kg (approx. 11 lb) Stock Europe
1041051 10 lb (approx. 4.5 kg) Stock Americas
Woka 3104 1041177 5 kg (approx. 11 lb) Stock Europe
Woka 3105 1041098 5 kg (approx. 11 lb) Special Order Europe
1041052 10 lb (approx. 4.5 kg) Stock Americas
Woka 3106 1041099 5 kg (approx. 11 lb) Special Order Europe
1041053 10 lb (approx. 4.5 kg) Special Order Americas
Woka 3108 1042831 5 kg (approx. 11 lb) Stock Europe
Woka 3110 FC 1064113 5 kg (approx. 11 lb) Special Order Europe
1088154 10 lb (approx. 4.5 kg) Special Order Americas
Woka 3111 FC 1041101 5 kg (approx. 11 lb) Special Order Europe
1041055 10 lb (approx. 4.5 kg) Special Order Americas
Woka 3118 1063529 5 kg (approx. 11 lb) Special Order Europe

Note: Products are available in other regions on a special order basis. For products available in both kg and lb weights, the kg package will be supplied to unspecified
regions (Africa,Asia/Pacific, Japan and Middle East) unless the lb package is specifically requested by the customer.

4.2 Handling Recommendations Product SDS No.

Store in the original container in a dry location. Woka 3101 50-877
Tumble contents prior to use to prevent segregation.
Woka 3102 50-877
Open containers should be stored in a drying oven
to prevent moisture pickup. Woka 3103 50-877
Woka 3104 50-877
4.3 Safety Recommendations Woka 3105 50-877
See the correct SDS (Safety Data Sheet) localized for the Woka 3106 50-877
­country where the material will be used. SDS are available Woka 3108 50-877
from the Oerlikon web site at www.oerlikon.com/metco Woka 3110 FC 50-877
­(Resources – Safety Data Sheets).
Woka 3111 FC 50-1992
Woka 3118 50-877

Information is subject to change without prior notice.

DSMTS-0044.7 – 88% WC / 12% Co Agglomerated and Sintered Powders www.oerlikon.com/metco

© 2017 Oerlikon Metco info.metco@oerlikon.com4