Why it was difficult for bronze swords to exceed 60cm in length

Yuewanggu Heavenly Sword

The blade length is 55cm.

Compared to early ironware, bronze swords

Surprisingly, there was no significant difference in intensity.

Corrosion resistance and storage properties were incomparably good, but

There is a problem with the self-load of the material.

60cm is the limit while maintaining the sword thickness.

The sword had to be very thick to withstand more than that.

It is said that it became a weight that no one could lift.

Katana, yam sword, etc.

Maintaining an appropriate thickness

Considering that 1~2m length can be produced

As a weapon, the difference in reach is a fatal drawback.