Phaezen
Adventurer
Rich Baker has put up an interesting essay on the thoughts behind the design and effect of weapon materials for Dark Sun 4e on his blog.
Seems they have decided that inferior weapons (Wood in particular) are the baseline weapons for 4e Dark Sun with Obsidion, Bone and metal weapons being "masterwork" similar to the masterwork armours in the PHB. This can actually reinforce the metal scarcity of Dark Sun as depending on the minimum enhancement levels of steel arms and armour it is feasible that a character won't get metal equipment till mid Paragon. Inferior material weapons will also be enchantable with mention made of a +3 bone longsword and a +2 stone hammer.
As for weapon breakage, several variants will be published with the intention that each group will decide which is right for their campaign.
Seems they have decided that inferior weapons (Wood in particular) are the baseline weapons for 4e Dark Sun with Obsidion, Bone and metal weapons being "masterwork" similar to the masterwork armours in the PHB. This can actually reinforce the metal scarcity of Dark Sun as depending on the minimum enhancement levels of steel arms and armour it is feasible that a character won't get metal equipment till mid Paragon. Inferior material weapons will also be enchantable with mention made of a +3 bone longsword and a +2 stone hammer.
As for weapon breakage, several variants will be published with the intention that each group will decide which is right for their campaign.