Description

Air-hardening tool steel with excellent wear resistance. No quench warping issues.

Properties

Edge Retention
8.0/10
Corrosion Resistance
4.0/10
Toughness
6.5/10
Ease of Sharpening
6.0/10

Chemical Composition

C
1.00%
Carbon
Cr
5.00%
Chromium
Mo
1.00%
Molybdenum
V
0.25%
Vanadium
Mn
0.70%
Manganese

✓ Pros

Air hardens - no warping. Excellent wear resistance. Stable.

✗ Cons

Harder to sharpen. Less tough than O1. Higher cost.

Grinding Notes

More wear resistant - harder on belts. Chromium carbides.

Polishing Notes

Can be challenging due to carbides. Good results possible.