I thought it was odd that the online SRD's would be wrong.Hardness and Hit Points
Dungeon Master’s Guide, page 222
Problem: The first paragraph is not consistent with similar information for shields on page 217.
Solution: Delete the first sentence after the boldface header.
Change the next sentence to read as follows:
Each +1 of enhancement bonus adds 2 to a weapon’s or shield’s hardness and +10 to its hit points.
howandwhy99 said:I thought it was odd that the online SRD's would be wrong.
Here it is in the DMG Errata.
Score one for Kemrain the Correct.
Edit: 400 woo hoo!

(Dungeons & Dragons)
Rulebook featuring "high magic" options, including a host of new spells.