H21 Steel — Specifications & Listings
AISI/DIN — Tungsten hot work tool steel
Grade Details
| Grade | H21 |
| Standard | AISI/DIN |
| Description | Tungsten hot work tool steel |
| Applications | Hot extrusion dies, hot forging dies for brass/bronze |
Equivalent / Similar Grades
Chemical Composition (%)
| C |
Mn |
Cr |
W |
V |
| 0.26–0.36 |
0.15–0.40 |
3.00–3.75 |
8.50–10.00 |
0.30–0.60 |
Mechanical Properties
| Hardness HRC (hardened) |
36–54 |
| Hardness HB (annealed) |
≤229 |
| Hot Hardness |
Good to 650°C |
Typical Available Sizes
| Round Bar |
16mm–300mm dia |
| Flat Bar |
20×10mm–300×100mm |
Sizes are indicative. Contact seller for exact availability.
Active H21 Listings on M-EX