A 36: Available in the same thickness as 20/30.

Freemax 15: 1/4" to 8" - This material is a low carbon, high manganese with high sulfur for maximum machineability.

1045: 1/4" to 8" - This material is 40 to 50 carbon and can be Heat Treated or Flame Hardened.

Freemax 45: 1/4" to 6" - A high carbon version of Freemax 15 for Heat Treating applications.

4142: 1/4" to 8-1/8" - A high carbon alloy plate produced to a fine grain process, mildly resulfurized to enhance machineability, capable of Heat Treating to 50 Rockwell C.

T-1: 1/4" to 3-1/2" - A pre-hardened construction alloy material, 4-5 times more corrosion resistant than carbon steel.