Grump
Member
Okay, I'm studying up and trying to find sources of small lots of microwaxes and other stuff that I still hope might bring a nice heat-resistant melt point in lieu of beeswax.
The tech sheets list an ASTM needle penetration test, which I now know involves a sharp needle, a total load of 100 grams, and letting the apparatus rest on the goo for 5 seconds or so. Depth of penetration in mm is the value derived, and it's standardized at somewhere like 77° F most of the time and 100° F less commonly. Sorry, I'm still not quick with Celsius equivalents.
Anyone have any ideas what our commonly-used lubes and lube components measure out to? Melt points and drop points are nice to know for preventing the liquid lube in the car trunk problem, but I'd also like to know beforehand whether a substitute by itself is guaranteed to need heat through a lubri-sizer...
For our application, the values probably need to be known at 60°, 70°, and 10° F increments up to probably 130°F. Start by measuring the stuff we know.
I can most likely rig up a suitable facsimile of the test device and check some Tac#1 and I think it's Ben's Red that one of the CB people sent me two years ago (might have been you, Ian--I never got the Three Amigos' names straight...).
As would be expected with such technical stuff, the protocol is rigorous. I haven't paid the $40+ or whatever to get the latest from ASTM, but I found the 1994 version and it requires controlling the temperature with a minimum time at the temp, a water bath to keep the sample there, and four pokes equally spaced not less than 12.7 mm (sound familiar???) apart...
The tech sheets list an ASTM needle penetration test, which I now know involves a sharp needle, a total load of 100 grams, and letting the apparatus rest on the goo for 5 seconds or so. Depth of penetration in mm is the value derived, and it's standardized at somewhere like 77° F most of the time and 100° F less commonly. Sorry, I'm still not quick with Celsius equivalents.
Anyone have any ideas what our commonly-used lubes and lube components measure out to? Melt points and drop points are nice to know for preventing the liquid lube in the car trunk problem, but I'd also like to know beforehand whether a substitute by itself is guaranteed to need heat through a lubri-sizer...
For our application, the values probably need to be known at 60°, 70°, and 10° F increments up to probably 130°F. Start by measuring the stuff we know.
I can most likely rig up a suitable facsimile of the test device and check some Tac#1 and I think it's Ben's Red that one of the CB people sent me two years ago (might have been you, Ian--I never got the Three Amigos' names straight...).
As would be expected with such technical stuff, the protocol is rigorous. I haven't paid the $40+ or whatever to get the latest from ASTM, but I found the 1994 version and it requires controlling the temperature with a minimum time at the temp, a water bath to keep the sample there, and four pokes equally spaced not less than 12.7 mm (sound familiar???) apart...