Piston Pin Material - Unexpected

Edit to correct this info!

Ooops....I found a mistake in my spreadsheet.... It's been corrected in the original post and now the densities makes a lot more sense.

273 pin - 7.78 gr/cc as originally found
340 pin - 8.03 gr/cc...... probably a high nickel or chromium steel
Chevy V6 pin - 7.78 gr/cc..... a tool steel or similar

Please accept my apologies for the misinformation!