AISI A2: Air-Hardening Medium-Alloy Cold Work Werkzeugstahl
ASTM A681 · Published: 2026-06-03 · Updated: July 2026
AISI A2 is an air-hardening cold work tool steel that achieves full hardness with minimal distortion — the primary advantage over oil-hardening O1. Its 5% chromium content provides moderate wear resistance, while air cooling eliminates the quench...
AISI A2 ist ein luft-hardening kalt arbeiten werkzeug steel das achieves full hardness mit minimal distortion — der primär advantage über öl-hardening O1. Sein 5% chromium content provides moderate wear widerstand, while luft cooling eliminates der quench cracking risk und distortion von liquid quenching. Es ist used für blanking und forming dies, plastic mold cavities, und shear blades.
Quick Facts
| Kategorie | Werkzeugstahl |
| Norm | ASTM A681 |
| Density | 7.80 g/cm³ |
| Yield Strength | 1,450-1,720 MPa |
| Tensile Strength | 1,620-1,930 MPa |
Global Equivalents & Cross-Reference
Verwandt Materials
🧮 Material Weight Calculator
Calculate the weight based on this material's density: 7.80 g/cm³
Frequently Asked Questions
Warum choose A2 über D2?
A2 offers better dimensional stability während hardening (luft cool vs öl quench), better machinability in der annealed condition, und adequate wear widerstand für moderate production volumes. D2 offers superior wear widerstand für lang-laufen stamping but ist harder zu machine und grind. A2 ist der practical choice für toolrooms ohne extensive grinding capability.
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