Epoxy expiration?

I have a tube(package?) of Hilti HY-200A with a date on the nozzle of 05/2014. Is this an expiration or manufacture date? If it's an expiration date how severely does this affect the strength of the epoxy assuming the storage conditions have been cool, dark, and dry. It's an unopened package and I'd like to use it for glue-ins but if the possible expiration is a problem it would be good to know.

Date?

My guess would be the expiration. It's likely fine, I haven't used that particular type of epoxy before, it would be worth a call to your local hilti rep for a second opinion.

That is definitely the expiration. Expiration is usually about 2 years after manufacture, so your product is over double the shelf life.

On a job site it would be rejected. It may still work or it may not harden properly. My suggestion would be to get a new tube to be safe. Don't forget to properly clean your holes!

psc-mongolia.com/files/prod…

Indicates shelf life of 12 months, so either would place it well past use-by. Sometimes these things will stay good a very long time if they're sealed/unopened, or if the degradation mechanism is thermal and they're kept cold, or both.

Either way you need to know. Can you install a test bolt & measure pullout strength?

More about the goop than anyone wants to know here:
us.hilti.com/medias/sys_mas…

HY-200A isn´t epoxy.

Jim Titt wrote:HY-200A isn´t epoxy.

Although it isn't called "epoxy" it is epoxy. Structural engineers spec it all the time on Construction sites to drill and dowel rebar into concrete on construction site. My typical rule of thumb is, if it's good enough for the foundation of a 4 story building, it's good enough for me.

Ryan7crew wrote: Although it isn't called "epoxy" it is epoxy. Structural engineers spec it all the time on Construction sites to drill and dowel rebar into concrete on construction site. My typical rule of thumb is, if it's good enough for the foundation of a 4 story building, it's good enough for me.

It isn´t called epoxy because it isn´t one, it´s a urethane methlacrylate.
While it is a resin that I prefer installers to use over epoxy I would have little confidence in a customer who neither knows the difference nor bothers to find out exactly what resin they use. If nothing else it implies they never read the safety data sheet. (I own Germany´s largest bolt manufacturer).

Toss it.

Now.

Greg Barnes wrote:Toss it. Now.

+1000

Using the expired resin is being purposefully neglectful.

For sure, I wouldn't use it for bolts. But, I have used expired glue/epoxy for reinforcing holds or other non-bolt purposes. Most of the time it sets up fine but I've had some not set up, illustrating that the expiration date on it can matter. Particularly for stuff 3 years old I would not use it.

Thanks for the thoughts and wisdom, I'm new to Hilti adhesive. I decided to toss the resin as there are too many variables and I would never use a resin/epoxy that may not properly set. Even using it to reinforce holds seems like a bad idea, if it doesn't set I've just littered the clif with goop.