It could be Pewter as that would be safe for touch . But the new car weights are Zinc and heavy like the lead weights.
The confusion for me is most likely because the metal yard puts words out incorrectly - there coin names - The term Tin pile for the longest time had me believe tin was any low cost metal . But Tin is a coating metal of high value @ about $10.00 a LB.
The metals i have been told are di cast like i said are brittle and AL in appearance I have not experienced a bendable di cast yet .
But since i see that many metals do melt at same temp. Alloy mix s can be what they really are