AISI D4 Oil-Hardening Cold-Work Tool Steel
AISI D4 (UNS T30404) — tungsten-modified D3, slightly better hot hardness. Compare with D2, D3, D5 for slitter blades at elevated cutting-edge temperatures.
Tag: industrial knife
AISI D5 High-Chromium Cold-Work Tool Steel
AISI D5 (UNS T30405) — Co + Mo modified D2 for heavy sections >50 mm. Compare with D2, D3, D7 for granulator rotors and rock-crusher blades.
AISI D7 High-Carbon Cold-Work Tool Steel
AISI D7 — high-V D3 with 4 % V, highest abrasive wear in D-series. Compare with D2, D5 for granulator rotors on filled plastics and mineral wool.
Daido DC53 Refined Cold-Work Tool Steel
Daido DC53 — D2 refinement with 2× toughness, HRC 60–62, better grindability. Compare with D2 and SKD11 for high-precision slitter blades.
AISI H11 Hot-Work Tool Steel
AISI H11 (UNS T20811) — 5 % Cr hot-work tool steel, HRC 48–53, tougher than H13. Compare with H13, H21 for hot shear blades and aluminium die-casting dies.
AISI H13 Hot-Work Tool Steel
AISI H13 (UNS T20813) — the standard die-casting / hot-shear grade, HRC 48–54, hot hardness to ~600 °C. Compare with H11 and H21.