K100 Tool Steel
High-carbon, high-chromium oil-hardening cold-work tool steel. Higher wear resistance but more brittle than D2, requires oil or vacuum quenching rather than air hardening.
Chemical Composition
| Element | Percentage (% by weight) |
|---|---|
| C | 2 - 2.2 |
| Cr | 11.5 - 12.5 |
| Mn | max 0.45 |
| Si | max 0.4 |
Physical Properties
- Density (kg/m³)
- 7700
Mechanical Properties
- Hardness (HRC)
- 60 to 62
Also known as
Direct equivalents
Same material sold under a different naming standard.
Heat Treatment
- Hardening
- oil quenched, small sections may be vacuum/gas quenched
Typical Applications
- Blanking and forming dies with very high wear demands
- Thread rolling dies
- Deep drawing dies
Buying This Grade in Pakistan
A less common alternative to D2 for die makers who need maximum hardness over toughness, used in the same Karachi tool and die shops (Korangi, SITE) that buy D2 and H13. Stock this as a secondary option alongside D2 rather than a high-turnover item, demand is narrower.
Related reading
- Steel grades for Karachi's tool and die shops: D2, H13, K100, P20 compared
A buyer's guide to the four main tool and mold steel grades Karachi's die shops order, and how to tell which one a job actually needs.
- D2 tool steel: composition, hardness, and why Karachi's tool rooms default to it
What D2 tool steel is made of, how hard it gets, and why it's the default cold-work grade in Karachi's die shops.
Grade Family
Cold-work tool steel (D3-type)
Need a custom size?
We offer cutting services to provide the exact dimensions you require.
Contact Sales