Misen chef's knife with stainless steel blade and black handle

8" Chef's Knife (ACUTO440) - Black

Black
$124.00
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Misen chef's knife with stainless steel blade and black handle
  • Misen chef's knife with stainless steel blade and black handle
  • 8" Chef's Knife (ACUTO440) - Black
  • Misen 8-inch Chef's Knife specs: AICHI ACUTO440 stainless steel, 13.6" overall, 8.2" blade, 0.5 lbs
  • Misen 8-inch chef's knife infographic showing sloped bolster, rust-proof blade, razor-sharp edge, and four cutting techniques
  • Hands slicing red onion into thin rings on white cutting board with chef's knife
  • Misen chef's knife cutting pineapple skin on wooden cutting board
  • Misen chef's knife with stainless steel blade and black handle
  • 8" Chef's Knife (ACUTO440) - Black
  • Misen 8-inch Chef's Knife specs: AICHI ACUTO440 stainless steel, 13.6" overall, 8.2" blade, 0.5 lbs
  • Misen 8-inch chef's knife infographic showing sloped bolster, rust-proof blade, razor-sharp edge, and four cutting techniques
  • Hands slicing red onion into thin rings on white cutting board with chef's knife
  • Misen chef's knife cutting pineapple skin on wooden cutting board
8" Chef's Knife (ACUTO440) - Black
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442 Reviews

8" Chef's Knife (ACUTO440) - Black

8" Black Chef's Knife

$124.00

Your #1 knife for everyday prep, designed to handle everything from herbs and vegetables to breaking down meat.

Color: Black
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60-Day Test Drive
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Lifetime Warranty Against Defects
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Free Returns
Features
  • AICHI ACUTO440 Japanese steel for exceptional sharpness and edge retention
  • Lab-tested rust resistance proven to withstand 50 days submerged in water and up to 100 dishwasher cycles.
  • Hybrid blade shape for rocking, chopping, drawing, and slicing
  • Ergonomic rounded spine and bolster for a more comfortable pinch grip
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Rust-Proof
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ACUTO440 Steel
All chop styles cutting technique icon

All Chop Styles
Use & Care
  • Hand wash
  • Dry immediately after use
  • Sharpen every 4–6 months
  • Heads up: High-carbon knives may show discoloration after exposure to acidic foods and/or salt. This is purely cosmetic and different from rust, which is extremely rare. 
  • Visit our Help Hub for more on how to use and care for this knife.

Let Us Handle the Sharpening
Specifications

Blade Length: 8.26 in. / 210 mm
Total Length: 13.5 in. / 345 mm
Handle Thickness: 18 mm
Blade Height: 49 mm
Weight: 0.5 lb / 230 g
Steel: AICHI ACUTO 440 (Japan)
HRC: 58±2
Grind & Edge: 50/50 Symmetrical, 14° per side
Handle Material: Polyoxymethylene
Country of Production: PRC
Warranty

All Misen products come with a lifetime warranty against defects. Misen will replace any defective products. Learn more about our warranty policy here and what's covered.

Pair it with

Basically a Navy Seal

Rust-proof after 100 dishwasher cycles.

Because it’s got more chromium than standard high-carbon stainless, ACUTO440's rust resistance is a lab result, not a marketing claim.
Sliced salami and mozzarella sheet pan pizza on parchment paper being cut with a Misen chef's knife
Misen bread knife slicing dark sourdough loaf on wooden cutting board

Works Harder, Stays Sharper

Holds a razor edge through heavy prep.

At 58±2 HRC, ACUTO440 has incredible edge retention without brittleness. That means you can put off sharpening it for longer.

Questions?

What are Misen’s ACUTO440 Knives made of?

Our ACUTO440 Knives are made with AICHI ACUTO440, an exceptionally corrosion-resistant Japanese high-carbon stainless steel. AICHI ACUTO440 is rust-proof, incredibly durable, and has excellent edge retention. What that means for you: less time cleaning and sharpening, more cooking.
What’s the difference between Misen’s ACUTO440 Knives and classic knives?

All of our knives are made from high-carbon stainless steel, which is what gives them their razor-sharpness and excellent edge retention. However, our ACUTO440 Knives have a much higher chromium content (about 18%), which makes them significantly more corrosion (aka rust) resistant.

Our ACUTO440 Knives also feature a rounded spine and heel (the back of the knife where the blade meets the bolster), creating a more comfortable grip over long prep sessions.
How are Misen’s ACUTO440 Knives different from other high-carbon knives?

We wanted our ACUTO440 Knives to be high-performance tools that you could still leave in the sink overnight if you needed to. That’s why our ACUTO440 Knives are made with AICHI ACUTO440, a Japanese high-carbon stainless steel that is more durable and easier to care for than other high-carbon knives, which are prone to rusting and/or chipping without proper care.
What do you mean by rust-proof?

Our ACUTO440 Knives are made with AICHI ACUTO440 steel, an exceptionally corrosion-resistant Japanese high-carbon stainless steel. Our knives have been lab-certified to withstand up to 100 dishwasher cycles, as well as 50 days of being submerged in water, without showing any signs of rust.
Can I put Misen’s ACUTO440 Knives in the dishwasher?

While our ACUTO440 Knives have been lab-certified to withstand up to 100 dishwasher cycles without showing any signs of rust, we generally recommend hand washing all of your Misen knives. Because our knives are extremely sharp, when they get jostled around in the dishwasher, the blade can cut through the soft materials that make up your dishwasher racks. Dishwashing can also damage your knives if the blade edge bangs against hard objects like flatware or pots and pans during the washing cycle.
How often should I sharpen my knives?

Whenever you start to notice your knife is slicing and dicing a little less crisply than usual, it’s time to sharpen. Although our ACUTO440 Knives can go long periods between sharpenings, we generally recommend getting them sharpened about twice a year for best performance. We also recommend regularly using a honing rod between sharpenings to keep your knife edge in good shape.
My blade has discoloration and/or staining. What is this?

While our ACUTO440 Knives are rust-proof, all high-carbon knives can experience some discoloration and/or staining with prolonged exposure to acidic foods and/or salt. This is purely cosmetic and is not the same as rust.

Customer Reviews

4.9
Rated 4.9 out of 5 stars
Based on 442 reviews
Total 5 star reviews: 398 Total 4 star reviews: 44 Total 3 star reviews: 0 Total 2 star reviews: 0 Total 1 star reviews: 0
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442 reviews
  • Emily B.
    Flag of United States
    Verified Buyer
    Reviewing
    8" Chef's Knife (ACUTO440) - Blue
    I recommend this product
    Product Standouts sharp, easy-to-use, good balance
    Rated 5 out of 5 stars
    3 weeks ago
    My New Go-To

    Love the weight of the handle, easy to control and super duper sharp!

    Was this helpful?
  • Kirk B.
    Flag of United States
    Verified Buyer
    Reviewing
    8" Chef's Knife (ACUTO440) - Blue
    I recommend this product
    Product Standouts good balance, sharp, premium materials, comfortable handle, well-priced
    Rated 5 out of 5 stars
    1 month ago
    Must Have Knife

    You’re shopping Misen because you either know or have heard the quality of their cookware, tools, and knives is exceptionally high quality. Well it is. This knife is one of the examples of an exceptional knife for your kitchen. I practically use it daily, has excellent “hand feel”, and it has been my experience over the years I’ve owned this knife, as well as the others you want for a complete set, that all their knives sharpen it a razor’s edge. So stop procrastinating and buy it, you won’t be sorry.

    Was this helpful?
  • AJR T.
    Flag of United States
    Verified Buyer
    Reviewing
    8" Chef's Knife (ACUTO440) - Blue
    I recommend this product
    Product Standouts good balance, sharp, comfortable handle, easy-to-use, nice weight
    Rated 5 out of 5 stars
    2 months ago
    Excellent knife

    Love the balance and it’s keeping sharpness well. Very happy with this

    Was this helpful?
  • Jeffrey F.
    Flag of United States
    Verified Buyer
    Reviewing
    8" Chef's Knife (ACUTO440) - Blue
    I recommend this product
    Product Standouts sharp, good balance, comfortable handle, nice weight, well-priced
    Rated 5 out of 5 stars
    2 months ago
    The real deal.

    Gotta admit... I was skeptical when I first read the rave reviews for the Mk 2 knives. Hadn't heard of this brand before, and did some quick research to expose the hype. Well, the more I researched, the more raves I found, so took a chance.

    Extremely sharp out of the box, comfortable handle, and nicely balanced. I'm not a chef, or a gourmand, but I do know tools pretty well -- this one, and the other I bought at the same time -- are a solid upgrade from all the other kitchen knives we own. Definitely recommend.

    Was this helpful?
  • Maryann L.
    Flag of United States
    Verified Buyer
    Reviewing
    8" Chef's Knife (ACUTO440) - Blue
    I recommend this product
    Product Standouts nice weight
    Rated 5 out of 5 stars
    3 months ago
    chefs 8 inch

    love it

    Was this helpful?
Show More
Why the 8" Black Acuto Chef's Knife Excels in Home Kitchens

The 8" Black Acuto Chef's Knife is built around AICHI ACUTO440, a Japanese high-carbon stainless steel with roughly 18% chromium — significantly more than standard high-carbon knives. That extra chromium translates to lab-certified rust resistance: the blade has been tested through 50 days submerged in water and 100 dishwasher cycles without showing signs of rust. At 58±2 HRC, it holds a razor edge through heavy daily prep while remaining tough enough to resist chipping.

The hybrid blade shape supports rocking, chopping, drawing, and slicing, making it a true all-purpose workhorse for herbs, vegetables, and breaking down meat. An ergonomic rounded spine and bolster reduce fatigue during long prep sessions, a thoughtful upgrade over traditional chef's knife geometry. Plan to sharpen every 4–6 months, and hand washing is still recommended for best longevity even though the steel can handle the dishwasher.

If you want to build out a complete set in matching black, the 7-Piece Black ACUTO440 Knife Set pairs this chef's knife with complementary blades for every task. For bread and crusty proteins, the 8" Black Acuto Serrated Knife is a natural companion in the same steel and handle finish.