Tungsten carbide Grade

[Erkamal]

HI Friends,

I am working in choke valve industry.
Mostly , tungsten carbide has been used for choke valve trim.

Is there any international standard for tungsten carbide's different grades in which i can found chemical as well as mechanical properties.

Kamlesh

 

[EdStainless]

There are industry standards, they rank grades by amount and composition of binder ans well as carbide composition and grain size.
Like this

https://www.federalcarbide.com/tungsten_carbide_grade_comparison_chart.html

or this

http://www.hmtg.com/information/grades.hartmetall

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P.E. Metallurgy, consulting work welcomed

 

First define what you mean by tungsten carbide.

"Everyone is entitled to their own opinions, but they are not entitled to their own facts."

 

[Erkamal]

Hi Edstainless,

Great Thx.
it is good information for me.
just one question that all those grade has been followed by any international standard?
Like ASTM or other....?

Kamlesh

 

[EdStainless]

No, last that I knew the ASTM spec covered the various things that get measured (composition, grain size, magentics, and so on) but they don't cover the actual carbide variations.

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P.E. Metallurgy, consulting work welcomed