AISI 420 Martensitic Edelstahl: Hardenable Cutlery Grade
ASTM A276 · Published: 2026-06-03 · Updated: July 2026
AISI 420 is a martensitic stainless steel that can be hardened by heat treatment to achieve high hardness (50-55 HRC) while retaining moderate corrosion resistance. It is the standard material for cutlery, surgical instruments, valve parts, and...
AISI 420 ist ein martensitic stainless steel das können sein hardened durch heat treatment zu achieve hoch hardness (50-55 HRC) while retaining moderate corrosion widerstand. Es ist der standard material für cutlery, surgical instruments, ventil teile, und pumpe shafts.
Quick Facts
| Kategorie | Edelstahl |
| Norm | ASTM A276 |
| Density | 7.75 g/cm³ |
| Yield Strength | 345 MPa (annealed) |
| Tensile Strength | 700-1,930 MPa (hardened) |
Global Equivalents & Cross-Reference
Verwandt Materials
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Frequently Asked Questions
Können 420 stainless rust?
Ja, 420 hat unter corrosion widerstand als 304 oder 316 — approximately similar zu 410. Es werden develop surface rust in chloride-rich environments. Der tradeoff ist sein hardenability: 420 können achieve >50 HRC while 304 cannot sein hardened durch heat treatment.
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