4140 0.750" RD 7" HRA Hand Tool Blank
$7.95
4140 is an oil hardening medium carbon alloy steel suitable for making most blacksmith's tools such as hammers, punches, top and bottom tools, dies, and axes.
- Element : Content %
- Chromium: 0.80 - 1.10
- Manganese: 0.75 - 1.0
- Carbon: 0.380 - 0.430
- Silicon: 0.15 - 0.30
- Molybdenum: 0.15 - 0.25
- Sulfur: 0.040
- Phosphorous: 0.035
- Iron: Balance