Suitable Steels

Sheet Steels:
Mild steel through to 0.4% Carbon steels e.g. CS1 -CS45 -(1010 -1045).
High strength low alloy (HSLA) steels that have been alloyed with Niobium (Nb).
 
All grades must be Aluminium stabilised.
Rod and Bar Mild steel through to 0.4% Carbon steels.

Rod and Bar:
Mild steel through to 0.4% Carbon steels.
Alloy steels, that if hardened and tempered, tempering temperature must be in excess of 610°c (1130°F) e.g Mn -Mo (605M36) Cr -Mo (709M40) (4140) (42CrMo4) Ni -Cr -Mo (817M40) (4340) (42CrNiMo6)

Unsuitable Steels:

Sheet

1050, 1060, 1070, 1080. HSLA alloyed with Vanadium(V) or Titanium (Ti).

Rod and Bar:
Carburising grades that have Nickel (Ni) additions to develop core strength e.g. 8620.

Untreatable steels:
Stainless steels High Chromium steels

For Tool Steels and Cast Irons, technical advice from NitrotecServices must be sought.