Conversion formula for viscosity
Conversion formula for viscosity
(OP)
Hello,
Can anyone give the conversion formula for viscosity - I need to convert Saybolt Second (SSU) to centi Stokes (cSt)? The actual value required is 100 SSU in cSt.
I found some tables on the internet which give the conversion for selected values and also the following formula
SSU = 4.55 * cSt, if cSt > 50.
I would greatly appreciate if there is any analytical expression for this conversion.
Thanks in advance.
Can anyone give the conversion formula for viscosity - I need to convert Saybolt Second (SSU) to centi Stokes (cSt)? The actual value required is 100 SSU in cSt.
I found some tables on the internet which give the conversion for selected values and also the following formula
SSU = 4.55 * cSt, if cSt > 50.
I would greatly appreciate if there is any analytical expression for this conversion.
Thanks in advance.





RE: Conversion formula for viscosity
k.v. = 0.22 * S – 180/S
Where
k.v. is in cSt
S is in SUS
If you're dealing with anything above 100 SSU ~ 200cSt, the formula simplifies to k.v. ~ 0.22*S
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RE: Conversion formula for viscosity
k.v. = (0.22*S) – (180/S)
=====================================
Eng-tips forums: The best place on the web for engineering discussions.
RE: Conversion formula for viscosity
"If you're dealing with anything above 100 SSU ~ 20cSt, the formula simplifies to k.v. ~ 0.22*S"
=====================================
Eng-tips forums: The best place on the web for engineering discussions.
RE: Conversion formula for viscosity
thanks for the equation. the simplified equation you have mentioned k.v. ~ 0.22*S is the same as the ones I found at many websites and mentioned in the original post but in reverse as S = 4.55*k.v.
I was looking for a more general formula applicable over a wider range and I think I can you the one without simplification.
thanks.
RE: Conversion formula for viscosity
You may use:
where S = SSU
RE: Conversion formula for viscosity