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AUS 10 Steel: A Comprehensive Guide

Written by:
Aleks Nemtcev
March 5, 2024
AUS 10 steel knives

In the ever-evolving world of knife-making, AUS 10 steel has emerged as a notable material, capturing the attention of enthusiasts and professionals alike. Renowned for its fine balance between durability, edge retention, and corrosion resistance, AUS-10 offers an appealing option for those seeking superior performance without the premium price tag of more exotic steels. 

Overview of AUS 10 Steel

AUS-10 steel is a high-carbon stainless steel known for its impressive balance of hardness, toughness, and corrosion resistance. It features a carbon content that provides excellent edge retention while still being relatively easy to sharpen. The addition of vanadium enhances its wear resistance, making knives crafted from AUS-10 capable of withstanding rigorous use. This steel is often compared to other well-known materials like VG-10, offering a competitive alternative with a slightly different performance profile. Its ability to maintain a sharp edge, coupled with its durability, makes it a popular choice for culinary, outdoor, and tactical knives.

AUS 10 steel

History and Development

The development of AUS-10 steel can be traced back to efforts in Japan to create a versatile, high-performance stainless steel that could meet the demands of both professional chefs and outdoor enthusiasts. Part of the AUS series, which includes AUS-8 and AUS-6, AUS-10 was engineered to provide a superior balance of properties by adjusting carbon and vanadium levels. This meticulous composition adjustment aimed to surpass the performance of its predecessors, offering a material that could hold a finer edge and resist wear and corrosion more effectively. The evolution of AUS-10 steel reflects a commitment to innovation in metallurgy, serving the needs of a diverse range of users who demand excellence from their cutting tools.

Chemical Composition

The chemical composition of AUS 10 steel is a carefully balanced formula designed to enhance its performance as a knife material. It typically contains around 0.95-1.10% carbon, which is responsible for the steel’s high hardness and edge retention capabilities. Additionally, it features chromium (around 13-14.5%) for excellent corrosion resistance, molybdenum (around 0.10-0.30%) to increase toughness and strength, and vanadium (approximately 0.10-0.25%) to improve wear resistance and refine the grain structure for a sharper edge. This composition is fine-tuned to offer a versatile performance profile that makes AUS-10 steel a preferred choice for a wide range of knife applications.

Element Percentage (%)
Carbon (C) 0.95 – 1.10
Chromium (Cr) 13.00 – 14.50
Manganese (Mn) 0.50 max
Silicon (Si) 1.00 max
Molybdenum (Mo) 0.10 – 0.30
Vanadium (V) 0.10 – 0.25
Phosphorus (P) 0.04 max
Sulfur (S) 0.03 max
Nickel (Ni) Optional/Varies


Elements and Their Impact on Performance

Each element in AUS-10 steel’s composition plays a crucial role in determining its overall performance. The relatively high carbon content ensures the steel’s hardness, allowing knives to maintain a sharp edge over prolonged use. Chromium is key to AUS-10’s notable corrosion resistance, making it suitable for use in environments prone to moisture. Molybdenum contributes to the material’s structural integrity, enhancing its toughness and resistance to stress, while vanadium adds to the steel’s wear resistance, enabling it to withstand abrasive forces better. Together, these elements contribute to AUS-10’s well-rounded performance, offering an excellent balance between durability, sharpness, and maintenance.

AUS 10

Properties of AUS 10 Steel

AUS-10 steel boasts a remarkable array of properties that make it a standout choice for knife enthusiasts and professionals. 

Hardness: AUS-10 has a hardness of around 60 HRC, allowing knives made from this steel to maintain sharpness for extended periods.

Edge retention: Thanks to high carbon content and the presence of vanadium, which contribute to the steel’s ability to maintain a sharp edge over prolonged use. This aspect is crucial for users who require consistent performance without frequent sharpening.

Toughness: AUS-10 strikes an impressive balance, offering enough resilience to withstand accidental drops and impacts without chipping or breaking, a trait that is especially valued in demanding environments.

Corrosion resistance: AUS-10 is another highlight; its stainless steel composition ensures that it can resist rust and corrosion effectively, making it suitable for use in humid or wet conditions. 

The wear resistance of AUS-10 is noteworthy. It stands up well against abrasion and wear, ensuring that knives made from this steel retain their functionality and aesthetics over time. Together, these properties make AUS-10 steel a versatile and reliable choice for a wide range of cutting tasks, from culinary preparation to outdoor adventures.

Property Description
Hardness Typically ranges between 58-60 HRC, providing a good balance of edge retention and durability.
Edge Retention Excellent, due to its high carbon content and presence of vanadium.
Toughness Offers a high level of toughness, making it resistant to chipping and breaking under normal use.
Corrosion Resistance High, attributed to its significant chromium content, making it suitable for various environments.
Wear Resistance Very good wear resistance, ensuring the blade maintains its functionality over time with proper care.
Sharpening Ease Relatively easy to sharpen for its hardness level, allowing for quick edge restoration.


AUS 10 Steel in Knife Making

AUS-10 steel has become a favored material in the knife-making industry, celebrated for its balanced performance that appeals to both knife makers and end-users. Its versatility and superior characteristics offer several advantages for knife makers, enabling the creation of high-quality blades that cater to a variety of market segments.

Advantages for Knife Makers

One of the primary advantages of AUS-10 steel for knife makers is its exceptional workability. Despite its hardness, AUS-10 can be relatively easily shaped, sharpened, and polished, allowing for intricate craftsmanship and detailed designs. This ease of manipulation does not compromise the steel’s performance, making it possible to produce knives that are both aesthetically pleasing and highly functional. Additionally, AUS-10’s excellent balance of toughness, edge retention, and corrosion resistance means that knife makers can market their products as durable, long-lasting, and suitable for a wide range of applications, from culinary use to outdoor activities. The steel’s ability to achieve a fine edge while resisting wear and corrosion also reduces the need for frequent maintenance, further increasing its appeal to consumers.

Working with AUS-10 Steel

Working with AUS-10 steel requires a nuanced understanding of its characteristics to fully leverage its capabilities in knife making. The heat treatment process is critical in optimizing the steel’s properties; AUS-10 benefits from a precise thermal cycle that involves heating to a specific austenitizing temperature, followed by quenching and tempering. This process enhances its hardness while maintaining the desired balance of toughness and corrosion resistance. Achieving the optimal hardness level (typically around 58-60 HRC) is crucial for maximizing edge retention without making the steel too brittle.

When it comes to sharpening and maintenance, AUS-10 steel is user-friendly, offering a simpler routine compared to harder, more wear-resistant steels. Sharpening can be effectively achieved with a variety of tools, from whetstones to ceramic rods, allowing for a fine, razor-sharp edge. Maintaining a consistent angle during sharpening is key to preserving the blade’s geometry and performance. Regular honing can help maintain the edge between more thorough sharpenings. For maintenance, while AUS-10’s corrosion resistance is high, it’s advisable to keep the blade clean and dry when not in use and apply a light coat of knife oil periodically to protect the surface, especially in humid or marine environments. Following these practices ensures that knives made from AUS-10 steel remain in peak condition, offering excellent performance over time.

AUS 10 steel knives

AUS 10 vs. Other Popular Knife Steels

When comparing AUS-10 steel to other popular knife steels, its unique balance of properties becomes evident, highlighting its versatility and appeal across various applications.

AUS 10 vs VG10

Both AUS-10 and VG10 steels originate from Japan and offer excellent corrosion resistance and edge retention. VG10 is slightly more renowned for its ability to maintain a sharp edge due to its higher carbon and chromium content, making it a favorite in high-end kitchen knives. However, AUS-10 counters with superior toughness and ease of sharpening, making it a more forgiving option for a wider range of users.

AUS 10 vs AUS-8

AUS-10 represents a step up from AUS-8 in terms of carbon content, leading to better edge retention and overall hardness. While both steels exhibit good corrosion resistance and are easy to sharpen, AUS-10’s enhanced performance profile makes it a preferable choice for users seeking a more durable blade that requires sharpening less frequently.

AUS 10 vs D2

D2 steel is a tool steel known for its high wear resistance and edge retention, outperforming AUS-10 in these aspects. However, D2 is not as corrosion resistant as AUS-10, making it less suitable for environments where moisture is a concern. AUS-10 offers a more balanced approach, providing adequate edge retention while ensuring superior toughness and corrosion resistance.

AUS 10 vs S35VN

S35VN is an American-made steel designed to offer a balance of edge retention, toughness, and corrosion resistance. It is generally considered to be superior to AUS-10 in terms of edge retention and wear resistance due to its niobium content. However, AUS-10 is often easier to sharpen and provides excellent performance at a potentially lower cost, making it a competitive option for those prioritizing ease of maintenance and budget.

Overall, AUS-10 steel presents a compelling choice for knife enthusiasts and professionals, offering a well-rounded performance that competes closely with other popular steels. Its particular blend of characteristics makes it suitable for a wide array of knife applications, from culinary to tactical and everyday carry.

Comparison Table of AUS 10 vs Other Popular Knife Steels

Feature/Steel AUS-10 VG10 AUS-8 D2 S35VN
Carbon Content High Higher Moderate Very High High
Edge Retention High Very High Moderate Very High Very High
Toughness High Moderate High Moderate High
Corrosion Resistance High High High Moderate High
Wear Resistance High High Moderate Very High Very High
Sharpening Ease Moderate Moderate-Difficult Easy Difficult Moderate
Typical Applications Versatile, from kitchen to outdoor Premium kitchen knives General use, budget-friendly knives Industrial, heavy-duty cutting Premium outdoor, EDC, and tactical knives


Care and Maintenance of AUS-10 Knives

Proper care and maintenance are crucial for maximizing the longevity and performance of AUS-10 knives. 

Regular Cleaning: After each use, promptly clean your knife with warm, soapy water and a soft sponge to remove any residues. This is especially important after cutting acidic foods or corrosive materials, which can damage the blade if left unwashed. Rinse thoroughly and dry immediately with a soft cloth to prevent water spots and rust formation.

Dry Storage: Store your AUS-10 knife in a dry place, away from moisture that could encourage corrosion. A knife block, magnetic strip, or sheath that allows for air circulation while protecting the blade is ideal. Avoid storing knives in a drawer where they can come into contact with other metal objects, leading to scratches and dulling of the edge.

Regular Honing and Sharpening: Use a honing rod regularly to maintain the knife’s edge between sharpenings. When the knife starts to dull, employ the appropriate sharpening method, such as a whetstone or professional sharpening service, to restore its sharp edge. Remember, a sharp knife is safer to use and performs better than a dull one.

Avoid Dishwashers: The harsh chemicals and high temperatures in dishwashers can damage the steel and handle materials of your AUS-10 knife. Always opt for hand washing to preserve the integrity of the knife.

Recommended Cleaning and Storage Solutions

Mild Dish Soap and Water: The best cleaning solution for AUS-10 knives is simply mild dish soap and warm water. Avoid using abrasive materials or scouring pads that can scratch the steel.

Knife Blocks and Magnetic Strips: Invest in a good-quality knife block or magnetic strip for safe storage. These storage solutions prevent the blades from touching each other or other hard surfaces, which can lead to dulling and damage.

Protective Sheaths: For added protection, especially for knives that are carried or stored in less controlled environments, consider using a protective sheath. Choose a sheath made from a non-abrasive material that fits the knife snugly.

Oil for Protection: Applying a light coat of mineral oil to the blade can help protect against corrosion, especially if the knife will be stored for an extended period. Ensure the oil is food-safe if the knife is used for culinary purposes.

Purchasing AUS-10 Knives

When venturing into the market for AUS-10 knives, discerning the quality and ensuring you’re getting the best value for your investment is key. AUS-10 is a popular choice among both culinary professionals and outdoor enthusiasts. Here’s what to consider and where to look when purchasing an AUS-10 knife.

What to Look for in a Quality AUS-10 Knife

Blade Craftsmanship: A well-made AUS-10 knife should have a uniformly sharp edge, precise bevels, and a smooth finish. The steel’s composition allows for a razor-sharp edge; hence, the craftsmanship in shaping and honing the blade is paramount. Inspect the blade for any imperfections or inconsistencies in its grind.

Handle Quality: The handle should not only fit comfortably in your hand but also be made of durable materials capable of withstanding the rigors of its intended use. Whether it’s for culinary tasks or outdoor adventures, the handle should offer a secure grip, even in wet conditions.

Overall Balance: A quality knife will feel balanced in your hand, with the weight distributed evenly between the blade and handle. This balance improves control and reduces fatigue during use.

Frequently Asked Questions

Q: Is AUS-10 a good knife steel?
A: Yes, AUS-10 is considered a good knife steel, particularly for users looking for an excellent balance between edge retention, toughness, and corrosion resistance without the premium price tag of higher-end steels. It offers a higher carbon content than AUS-8, providing better hardness and the ability to maintain a sharp edge for a longer period. Its vanadium addition enhances wear resistance, and overall, AUS-10 provides a great performance for a wide range of knife applications, including culinary, outdoor, and everyday carry knives.

Q: What is the equivalent of AUS-10 steel?
A: AUS-10 steel is often compared to VG-10 steel, another high-carbon stainless steel popular in the knife industry, especially for kitchen knives. Both steels offer similar levels of edge retention, corrosion resistance, and toughness, with VG-10 possibly having a slight edge in corrosion resistance and edge retention due to its slightly different alloy composition. However, AUS-10 is praised for its toughness and ease of sharpening, making it a competitive alternative to VG-10. It’s also compared to 440C for its corrosion resistance and edge-holding capabilities but surpasses 440C in toughness.

Q: Does AUS-10 steel rust?
A: Like all stainless steels, AUS-10 is designed to be highly resistant to rust and corrosion. Its high chromium content (at least 13%) ensures a protective oxide layer forms on the steel, shielding it from most causes of corrosion. However, no steel is entirely rust-proof. AUS-10 can rust under certain conditions, such as prolonged exposure to harsh environments, acidic substances, or if not properly maintained. Proper care, including regular cleaning, drying after use, and occasional oiling, will significantly reduce the risk of rust and maintain the steel’s integrity over time.


AUS-10 steel distinguishes itself in the knife world with its excellent blend of edge retention, toughness, and corrosion resistance, making it an attractive option for a wide range of users. It stands out for offering premium qualities at a more accessible price point, bridging the gap between high-end and budget-friendly knife steels. Its balanced performance makes AUS-10 a versatile choice for everything from professional kitchen knives to durable outdoor blades.


Author: Aleks Nemtcev | Connect with me on LinkedIn

References and Credits:

AICHI Steel (Japan) Stainless steel for blades.

AICHI Techno Metal Fukaumi Co Ltd. website.

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