Hubbell HBL8215C Plug.
2 Pole, 3 wire, grounding 15A, 125V. Hospital grade straight body plug. UL Listed,
CSA Certified.UL Verified to Fed. Spec. W-C 596. IP Suitability IP20. Max wire gauge 10GA.
All blade made from Brass.
Neutral blade is Brass finished in white color
Low price Hospital grade plug, perfect for making your audiophile grade power
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Is the ground lug of Hubbell 8215C made from copper?
No, it is not.
You can check the reference spec from this link
As you can clearly see, the ground lug is made from Brass, not copper.