Historically speaking, swords were never intended for hard blade on blade contact (despite what you see in the movies). Swords were designed to cut, slash or stab soft portions of an enemy's body. Generally speaking, a shield or armour would be used to block any incoming blows and the sword would be used offensively.
If you want a sword for blade on blade combat, you should look to other sources than Del Tin. Renactment blades have rebated edges and are generally more heavily constructed than historical swords were. In fact, Del Tin swords generally lean to the heavier side of the historical spectrum. Not ahistorically so, just a little heavier and beefier than average.