Misen serrated bread knife with black handle and stainless steel blade

5" Serrated Knife (ACUTO440) - Black

5" / Black
$99.00
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Misen serrated bread knife with black handle and stainless steel blade
  • Misen serrated bread knife with black handle and stainless steel blade
  • 5" Serrated Knife (ACUTO440) - Black
  • Hands segmenting a peeled orange over a glass bowl on a wooden cutting board
  • Misen serrated utility knife with black handle and stainless steel blade
  • Misen steak knife with serrated blade and black handle close-up
  • Smoked salmon bagels with cream cheese, red onion, capers, and dill on a wooden cutting board with a Misen serrated knife
  • Misen serrated bread knife with black handle and stainless steel blade
  • 5" Serrated Knife (ACUTO440) - Black
  • Hands segmenting a peeled orange over a glass bowl on a wooden cutting board
  • Misen serrated utility knife with black handle and stainless steel blade
  • Misen steak knife with serrated blade and black handle close-up
  • Smoked salmon bagels with cream cheese, red onion, capers, and dill on a wooden cutting board with a Misen serrated knife
5" Serrated Knife (ACUTO440) - Black

82 Reviews

5" Serrated Knife (ACUTO440) - Black

5-Inch Black ACUTO440 Serrated Knife

$99.00

Our rust-proof serrated knife, made with next-generation ACUTO440 steel. Wave-shaped serrations glide through crusty, soft, and/or squishy foods without tearing.

Size: 5"
Color: Black
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60-Day Test Drive
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Lifetime Warranty Against Defects
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Features
  • AICHI ACUTO440 steel for pro-level sharpness and edge retention
  • Lab-tested rust resistance proven to withstand 50 days submerged in water and up to 100 dishwasher cycles.
  • Wave-style serrations for smooth slicing with less tearing
  • Ergonomic rounded spine for a comfortable pinch grip
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Rust-Proof
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ACUTO440 Steel
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Serrated Blade
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: 5 in. / 127 mm
Total Length: 10 in. / 253 mm
Handle Thickness: 28 mm
Blade Height: 17 mm
Weight: 4.8 oz / 136 g
Steel: AICHI ACUTO 440 (Japan)
HRC: 58±2
Grind & Edge: Single blade, 18 wide-set serrations
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.

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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

5.0
Rated 5.0 out of 5 stars
Based on 82 reviews
Total 5 star reviews: 81 Total 4 star reviews: 1 Total 3 star reviews: 0 Total 2 star reviews: 0 Total 1 star reviews: 0
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82 reviews
  • Susan W.
    Flag of United States
    Verified Buyer
    Reviewing
    8" Serrated Knife (ACUTO440) - Blue
    I recommend this product
    Product Standouts sharp, good balance, comfortable handle
    Rated 5 out of 5 stars
    2 weeks ago
    Most used knife

    This knife is almost out on our counter because we use it every day to slice breads and bagels. It is angled perfectly to obtain thin or thick slices. It has maintained its sharpness, and I have purchased several as gifts.

    Was this helpful?
  • Michael B.
    Verified Buyer
    Reviewing
    Personalized 5" Serrated Knife (AUS-8) - Final Sale
    I recommend this product
    Rated 5 out of 5 stars
    3 weeks ago
    Wow that's sharp

    I love Misen. I have a couple pans and now purchased a third knife. Did I need it? No. Was the price right and did I trust the quality? Yes! The personalization option, for free, sealed it for me.

    When I tried it the first time it just confirmed it was a great decision. Super sharp, the right size and I absolutely love it.

    Was this helpful?
  • Eric W.
    Flag of United States
    Verified Buyer
    Reviewing
    8" Serrated Knife (ACUTO440) - Blue
    I recommend this product
    Rated 5 out of 5 stars
    1 month ago
    Sharp and cuts great

    We have tried it on sourdough bread and typical knives made it difficult. This knife was amazing

    Was this helpful?
  • Sara F.
    Flag of United States
    Verified Buyer
    Reviewing
    8" Serrated Knife (ACUTO440) - Blue
    I recommend this product
    Product Standouts sharp, easy-to-use, good balance, premium materials, nice weight
    Rated 5 out of 5 stars
    1 month ago
    Favorite Bread Knife!

    This particular version of Misen Bread knife was given as a gift. I have loved my knife for YEARS due to the weight, efficiency, ease and perfect serration.

    Was this helpful?
  • Jonathan C.
    Flag of United States
    Verified Buyer
    Reviewing
    8" Serrated Knife (ACUTO440) - Blue
    I recommend this product
    Product Standouts good balance, sharp, well-priced, nice weight
    Rated 5 out of 5 stars
    1 month ago
    Great feel in the hand

    Well priced, high quality, serrated knife knife that is well balanced and sharp. Good buy!

    Was this helpful?
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Why the ACUTO440 Serrated Knife Is a Kitchen Essential

This 5" serrated knife earns its keep on tasks a straight edge struggles with — slicing crusty bread, ripe tomatoes, and other soft-skinned foods without crushing or tearing them. Its wave-shaped serrations bite into the surface and glide through, so you get clean slices instead of squished ones. The ACUTO440 steel behind that edge is a Japanese high-carbon stainless known for rust resistance and long-lasting sharpness, meaning you can go months between sharpenings even with regular use.

If your prep work leans toward larger loaves, dense melons, or bigger cuts, the 8" Serrated Knife offers more length and reach while sharing the same rust-proof construction. For everyday chopping and slicing alongside this knife, the 8" Chef's Knife makes a natural companion in the block. And if you're building out a full set from scratch, the 7-Piece Knife Set covers this serrated knife plus the other essentials in one go.

Care is simple: hand wash, dry it right away, and expect to sharpen every four to six months depending on use. Minor discoloration from acidic foods is cosmetic, not rust — a fair trade for a blade this easy to maintain.