Alloy Steel contains a high percentage of chromium from less than 10% to more than 25%. There are 3 groups:
- AUSTENITIC – (Non-Magnetic in the annealed condition) contains 16% Chromium and 7% Nickel. These include types 301, 302, 304 and 316.
- FERRITIC – (Magnetic) which contains Chromium only and cannot be hardened by heat treatment. The group includes 430.
- MARTENSITIC – (Magnetic) which contains Chromium and can be hardened by heat-treatment. These include 410 and 420.
NOTES: Other alloys and tempers may be available upon inquiry.