H-13 .75" RD 7" Hand Tool Blank

H13 is tool steel developed to excel at high temperatures. This makes it very tough to forge but it makes a resilient punch or dies for hot work applications. Take note to be careful in how you heat treat it, it is air-hardening and improper heat treatment can leave the striking end of your tool hard which can cause chipping of the tool or hammer.  Element: Content % Chromium: 4.75-5.50 Molybdenum: 1.10-1.75 Silicon: 0.80-1.20 Vanadium: 0.80-1.20 Carbon: 0.32-0.45 Nickel: 0.3 Copper: 0.25 Manganese: 0.20-0.50 Phosphorus: 0.03 Sulfur: 0.03