4340 3.5" x 1.375" RD Top Tool / Hardy Blank 168 Manufacturing The stock that we currently

The stock that we currently have is the last of the stock we will offer

Chromium: 0

It is suitable for making most blacksmiths told such as hammers

4340 is a medium carbon alloy steel similar to 4140 but with the addition of a higher nickel content which gives it extra toughness

they have lower flexibility than the higher grits but cuts very quickly

4340 3.5" x 1.375" RD Top Tool / Hardy Blank 168 Manufacturing The stock that we currently4340 is a medium carbon alloy steel similar to 4140 but with the addition of a higher nickel content which gives it extra toughness, especially at slightly higher temperatures. It is suitable for making most blacksmiths told such as hammers, punches, top and bottom tools, dies, etc. It is oil hardening but displayed some slight air hardening properties so caution should be exercised to ensure struck ends of tools are soft. Element: Content % Iron: 95.