Aus 8 Steel Review: What Is It & Is It Good?

The AUS 8, originating from Japan, is often classed as superior steel, standing in the same line with D2, Cm-154, and 440C. With an appropriate heating and hardening process, it will satisfy the standards of good quality stainless steel.

It contains a high amount of Molybdenum, Vanadium, and Carbon. Generally speaking, it is great for scissors, food machines, knives, or medical equipment.

And in this short Aus 8 steel review, we will take a look at some of its best traits.

Composition

  • 0.75% of Carbon: gives one-of-a-kind quality of an added edge retention, and enhances the hardness and corrosion resistance, but reduces the overall strengths if it has a high amount of Carbon.
  • 14.5 % of Chromium: greatly contributes to an increase in toughness, hardness, tensile strength alongside improving the ability of resistance to wear, rust, and abrasion. Users can attain the desired results thanks to its dependability added by Chromium besides its strength of attaining a razor-sharp edge and enduring under high and long pressure of work.
  • 0.5% of Manganese: helps add tensile strength and increase wear resistance besides improving its hardening and grinding ability.
  • 1% of Silicon: reinforces tensile strength that is one able to withstand maximum stress.
  • 0.04% of Phosphorus: builds up the overall strength it.
  • 0.03% of Sulfur: strengthens the machinability.
  • 0.3% of Molybdenum: provides it with good abilities of welding and enduring corrosion and wear. The increased lattice strain in it releases the augmented energy needed to ruin the blade, helping it become more durable and less susceptible to such impairment.
  • 0.25% of Vanadium: makes it easier to sharpen and innovates the quality stainless steel in gaining more tensile strength and imperviousness to damages.
  • 0.5% of Nickel: helps steady its austenite structure and contributes to the commendable ability of welding and toughness but decreases the feature of corrosion resistance even if it contains a high amount of Manganese.

Properties

  • Edge Retention: thanks to a high amount of Carbon, it exceptionally exhibits edge retention, making it comparable to premium material ranks.
  • Corrosion Resistance: 14.5% of Chromium provides a high degree of corrosion resistance. However, take care of the knife if you tend to use it in a humid condition.
  • Wear Resistance: 0.75% of Carbon and 0.3% of Molybdenum grants this material an excellent wear resistance ability.
  • Sharpness: 0.25% of Vanadium gives it an impressive sharpness property compared to the other sharpening tools.
  • Machinability: Sulfur and Molybdenum offer the finest machinability. This feature requires little power to perform the cutting and quickly achieves a good finish.
  • Toughness: the Chromium and Nickel in it contributes to its toughness that it deforms without fracturing.

Pros

  • Easy to sharpen
  • Features rust, wear, abrasion, corrosion resistance
  • Exhibits the edge retention
  • Withstands high pressure
  • Resilient
  • Has machinability

Cons

  • Dull when being out in an oxygen environment for a long time
  • Features dependability, meaning that its quality depends on the daily use and tempering techniques performed by different manufacturers

Who Should Use This?

The knife companies and knife makers can count on this steel for its superior composition to create various types of blades that are easy to handle and good at enduring high abuse.

Those who purchase this material to produce their specialty knives can take advantage of its first-rate properties, and it will take buyers aback at how satisfyingly it performs.

With its excellent qualities exhibited in dependability and toughness, homemakers can even buy it for their machetes to efficiently cut trees and plants.

Frequently Asked Questions

#1. What Is The Hardness of Aus 8?

It scores 59 for its hardness (HRC).

#2. Is Aus 8 Good For Knives?

Considered a mid-entry face, it has various admirable features, including edge retention, corrosion resistance, wear resistance, sharpness, machinability, and toughness. Therefore, it undoubtedly becomes an ideal part of constructing your razor-sharp knives.

#3. Which Knives That Commonly Use This Steel Type?

The SOG Knife company often chooses this type for its manufacturing. Besides, Cold Steel creates SRK series made from Aus 8 as well. The Ontario Knife Company released its RAT Model 1 folding knife into the market, attracting a great sales volume thanks to the material the company has been using.

Another knife company name, Columbia River Knife and Tool, places its trust in this material to create their popular Van Hoy series. Lastly, some Gerber knives also choose this mid-range steel for production.

#4. How It Scored on Tests?

It had an extremely positive score on an edge-retention test, and the highlight is its sharpen-ability.

According to Spyderco Knife company, its Calypso Jr. model with the blades made from this steel type required five strikes into a ceramic rod and ten ones into a butcher’s steel to attain a fully sharpened finish.

Compared to the other high-end steels, like D2 or VG-10, the performance of this steel is far faster.

Based on another edge-retention test, its 59 HRC feature grants outperformance of its rivals such as 154-CM, 400C, and VG-10 steels.

Final Verdict

Generally speaking, Aus 8 is an excellent option for knife makers and knife companies to make use of and produce quality razor-sharp products. It is not totally resistant to corrosion, so remember to take care of it.

Last Updated on February 24, 2021 by Andy Wang

My name is David Strong. I'm a knife expert and a US Marine veteran. I used to fight in Iraq, so I gained lots of combat experience there, especially when it comes to combat, tactical, and outdoor knives. And this blog is where I share my expertise with you alongside my friend Andy.