THE JAPANESE KNIFE STEEL GUIDE
AUS-10 Steel: Sharpness, Strength & Everyday Performance
What makes AUS-10 a popular choice for Japanese-style kitchen knives? Discover its benefits, how it compares with VG-10, and which blade suits your cooking style.
THE QUICK ANSWER
AUS-10 is a Japanese high-carbon stainless steel used in kitchen knives for its balance of sharpness, edge retention, corrosion resistance and manageable maintenance. It is a practical option for home cooks and professional chefs when properly heat-treated and sharpened.
What Is AUS-10 Steel?
AUS-10 is a Japanese stainless blade steel developed by Aichi Steel. It belongs to the AUS family and contains approximately 0.95–1.10% carbon and 13–14.5% chromium, along with smaller amounts of molybdenum and vanadium.
These elements work together to provide a combination of hardness, wear resistance and corrosion resistance. With suitable heat treatment and blade geometry, AUS-10 can take a fine cutting edge for everyday kitchen preparation.
Why Choose AUS-10 for a Kitchen Knife?
Four practical benefits make AUS-10 worth considering when choosing a kitchen knife.
Fine Cutting Edge
Can be sharpened to a fine edge for slicing vegetables, preparing meat and everyday chopping.
Good Edge Retention
Offers useful wear resistance to help maintain cutting performance through regular use.
Corrosion Resistance
Its chromium content helps resist staining and corrosion when the blade is properly cared for.
Practical Maintenance
Can be maintained with suitable sharpening tools, including a whetstone.
AUS-10 Steel Composition
The chemical composition helps explain the properties of AUS-10. These are published specification ranges for the steel grade, not individual measurements of a finished knife.
| Element | Content | Main Role |
|---|---|---|
| Carbon | 0.95–1.10% | Hardness and edge retention |
| Chromium | 13–14.5% | Corrosion resistance |
| Molybdenum | 0.10–0.30% | Hardenability and wear resistance |
| Vanadium | 0.10–0.25% | Wear resistance and grain refinement |
Technical reference: Aichi Techno Metal Fukaumi – Stainless Steel Technical Data.
How Hard Is AUS-10 Steel?
Reference Hardness
60 HRC
Rockwell C Scale
AUS-10 has a published reference hardness of approximately 60 HRC after suitable heat treatment.
Actual hardness varies between finished knives. Heat treatment, cutting-edge geometry and intended use are just as important as the hardness number itself.
AUS-10 vs VG-10: Which Is Better?
AUS-10 and VG-10 are both Japanese stainless steels used in kitchen knives. Neither is automatically better. The right choice depends on the finished knife and how you intend to use it.
Japanese Stainless Steel
AUS-10
A capable all-round steel offering a balance of sharpness, edge retention and manageable sharpening.
Consider it for: Versatile everyday kitchen preparation.
Japanese Stainless Steel
VG-10
Another capable knife steel with a different alloy composition and potentially greater wear resistance.
Consider it for: Everyday and precision food preparation.
| Feature | AUS-10 | VG-10 |
|---|---|---|
| Origin | Japan | Japan |
| Steel type | High-carbon stainless | High-carbon stainless |
| Edge retention | Good | Good; potentially greater wear resistance |
| Corrosion resistance | Good | Good |
| Sharpening | Generally manageable | Can require more effort depending on treatment |
| Typical use | Everyday preparation | Everyday and precision preparation |
Our takeaway: Choose the knife that suits your cooking style, feels comfortable in your hand and has suitable blade geometry. Steel type alone does not determine cutting performance.
What Does 45-Layer AUS-10 Damascus Mean?
Some Chef Supply Co knives use 45-layer Damascus construction with an AUS-10 cutting core.
The AUS-10 core forms the cutting edge, while surrounding layers create the distinctive Damascus pattern. The result combines a functional cutting core with an eye-catching blade design.
Does more Damascus layering mean a better knife? Not necessarily. Layer count alone does not guarantee better sharpness or edge retention. The core steel, heat treatment and blade geometry remain more important to cutting performance.
EXPLORE THE COLLECTION
Chef Supply Co AUS-10 Kitchen Knives
Looking for an AUS-10 knife? These Chef Supply Co designs offer different blade shapes and handle styles for everyday food preparation.
How to Care for Your AUS-10 Kitchen Knife
Proper care helps preserve the blade's edge and appearance. Follow these everyday maintenance tips.
Frequently Asked Questions
Quick answers to common questions about AUS-10 kitchen knife steel.
FIND YOUR NEXT KITCHEN KNIFE
A Good Knife Makes Every Cut Count.
From everyday chef knives to precision Kiritsuke designs, discover the Chef Supply Co range and find a blade that suits the way you cook.
Explore Chef Supply Co KnivesTechnical reference: Aichi Techno Metal Fukaumi – Stainless Steel Technical Data. General steel specifications are not guarantees of performance for an individual finished knife.
