AISI T15 Hoch-Geschwindigkeit Stahl: Tungsten-Cobalt-Vanadium Super HSS
ASTM A600 · Published: 2026-06-02 · Updated: July 2026
AISI T15 is the ultimate high-speed steel—a tungsten-cobalt-vanadium grade (1.50-1.60% C, 12.0% W, 4.0-5.0% Cr, 5.0% Co, 4.75-5.25% V) producing the highest wear resistance and hot hardness of any conventional HSS grade. The massive vanadium...
AISI T15 ist der ultimate hoch-geschwindigkeit steel—ein tungsten-cobalt-vanadium grade (1.50-1.60% C, 12.0% W, 4.0-5.0% Cr, 5.0% Co, 4.75-5.25% V) producing der highest wear widerstand und heiß hardness von any conventional HSS grade. Der massive vanadium carbide population (5% V produces ~7-8 vol% MC carbides mit 2800 HV hardness) provides abrasive wear widerstand approaching cemented carbide while retaining der toughness und fabricability advantages von HSS. Hardens von 1,230-1,270°C (requires hoch-temperature salt bath oder vacuum furnace—nicht achievable mit conventional atmospheric furnaces). Triple temper bei 540-560°C produces 65-67 HRC mit sekundär hardening. Used für broaches, form tools, und milling cutters für aerospace superalloys, titanium, und hoch-strength steels. Der cobalt content sustains heiß hardness bei cutting temperatures über 600°C wo M2 und M42 würde soften. Grindability ist poor due zu MC vanadium carbides harder als conventional aluminum oxide wheels—requires CBN oder diamond grinding.
Quick Facts
| Kategorie | Werkzeugstahl |
| Norm | ASTM A600 |
| Density | 8.20 g/cm³ |
| Yield Strength | 3,800 MPa (551 ksi) at 65-67 HRC |
| Tensile Strength | 4,100 MPa (595 ksi) at 65-67 HRC |
Global Equivalents & Cross-Reference
| Alternative Norm / Güte | Action |
|---|---|
| EN HS12-1-5-5 | Compare |
| DIN 1.3202 | Compare |
| SKH57 | Compare |
| W12Cr4V5Co5 | Compare |
Verwandt Materials
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Frequently Asked Questions
Wie tut T15 compare zu fest carbide für cutting tools?
Carbide (WC-Co) provides far superior wear widerstand bei higher cutting speeds but ist brittle—unsuitable für interrupted cuts, form tools mit complex profiles, oder tools requiring sharp edge radii unter 25 μm. T15 fills der space wo carbide würde chip (broaching, form turning, gear hobbing) but wo M2/M42 wear zu quickly. T15 costs 5-8× mehr als M2 but delivers 3-5× der werkzeug life in nickel alloy und titanium machining.
References & International Standards
- ASTM International. Norm Specifications für Stahl & Metal Alloys. astm.org
- International Organization für Standardization (ISO). Metallic Materials — Cross-Referenz Database. iso.org
- American Iron und Stahl Institute (AISI). Stahl Güte Designations & Equivalents. steel.org
- European Committee für Standardization (CEN). EN Stahl Standards & Numbering System. cencenelec.eu