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What size carbide drill do you need? You are drilling 1" thick material. Give me the drill size and I'll just send you one for nothing. If you need more than one size, let me know and I'll see if I have some of those lying around also. I work for a company that manufactures carbide all over the world. I have tons of drills, facemills, turning tools etc. lying in my garage.
You should be able to drill this with ease. More than likely, you are not putting enough feed on the drill and you are work hardening the material before you drill it. This shouldn't be hard at all.
I use WD-40 at home. Just drill a little bit, then pull the drill up and spray some WD-40 in the hole.
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