Misen nakiri knife with blue handle and stainless steel blade

5.5" Nakiri Knife (ACUTO440) - Blue

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$94.00
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Misen nakiri knife with blue handle and stainless steel blade
  • Misen nakiri knife with blue handle and stainless steel blade
  • Misen chef's knife chopping colorful rainbow chard stems on wooden cutting board
  • Misen chef's knife slicing radicchio on wooden cutting board
  • Misen nakiri knife with blue handle and stainless steel blade
  • Misen santoku knife blade close-up with blue handle
  • Misen nakiri knife with blue handle and stainless steel blade
  • Misen chef's knife chopping colorful rainbow chard stems on wooden cutting board
  • Misen chef's knife slicing radicchio on wooden cutting board
  • Misen nakiri knife with blue handle and stainless steel blade
  • Misen santoku knife blade close-up with blue handle
5.5" Nakiri Knife (ACUTO440) - Blue
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6 Reviews

5.5" Nakiri Knife (ACUTO440) - Blue

5.5-Inch Blue Nakiri Knife in ACUTO440 Steel

$94.00

A knife for all the veg-heads, with a straight blade for clean, even chops, plus a wide surface for scooping all that goodness into the pot.

Color: Blue
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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.
  • Straight-edge blade for full board contact and clean, consistent chopping
  • Gently curved tip for optional rock-chopping
  • Wide blade surface for easy scooping and transferring ingredients
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Rust-Proof

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ACUTO440 Steel

Up and down chopping motion technique icon

Up & Down Chop
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: 5.5 in. / 140 mm
Total Length: 10.43 in. / 265 mm
Handle Thickness: 16 mm
Blade Height: 50 mm
Weight: 0.34 lb / 155 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

Why It’s Great

A Victory For Veggie Lovers

Full contact with the board on every stroke. Paper-thin slices every time. Plant-based cooks, we see you.

Wide Enough to Double as a Bench Scraper

Scoop your mise en place straight from the board to the pot. Efficient and oh-so-satisfying.

The Spine and Bolster Make It Easy

Rounded and ergonomic, they reduce pinch-grip finger pressure so you’ll stay comfy over long prep sessions.

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 6 reviews
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6 reviews
  • Thomas F.
    Verified Buyer
    Reviewing
    5.5" Nakiri Knife (ACUTO440) - Blue
    I recommend this product
    Rated 5 out of 5 stars
    3 minutes ago
    Great knife

    Works great for slicing/chopping. Holds its edge well. Convenient to pick up items that have been prepared.

    Was this helpful?
  • Donet S.
    Flag of United States
    Verified Buyer
    Reviewing
    5.5 inch Nakiri Knife - ACUTO440 - New
    I recommend this product
    Product Standouts sharp, easy-to-use, good balance, nice weight, sleek design
    Rated 5 out of 5 stars
    2 weeks ago
    Nice clean knife

    The Nakiri 5.5" knife is well balanced.Has a nice feel a comfortable weight.Works well and does the job in the kitchen.

    Was this helpful?
  • Pete C.
    Flag of United States
    Verified Buyer
    Reviewing
    5.5" Nakiri Knife (ACUTO440) - Blue
    I recommend this product
    Product Standouts good balance, sleek design, comfortable handle, nice weight, sharp
    Rated 5 out of 5 stars
    4 months ago
    Beautiful

    This is my second Misen knife, I've had the Utility Knife for 3 years and it's been the only thing I've used, and when I decided I wanted something a bit like a Chinese chef's knife or a santoku or nakiri for vegetable chopping, I saw that Misen had just come out with their spin on a nakiri, and its just as lovely as my Utility Knife.

    Just feels so good and nimble in the hand, so perfectly balanced and smooth, and I love the way they've designed this blade shape to be a bit closer to a santoku or cleaver than a traditional nakiri, sleek rounded contour. Beautiful knife

    Was this helpful?
  • Jeremiah A.
    Flag of United States
    Verified Buyer
    Reviewing
    5.5" Nakiri Knife (ACUTO440) - Blue
    I recommend this product
    Product Standouts sharp, easy-to-use
    Rated 5 out of 5 stars
    4 months ago
    Makes chopping veggies a breeze!

    Already had a chef’s knife from Misen, which I love. When I saw this announced I was quick to preorder and was not disappointed. The knife feels great in hand, looks stylish, and chops veggies with ease.

    Was this helpful?
  • Cheryl H.
    Flag of United States
    Verified Buyer
    Reviewing
    5.5" Nakiri Knife (ACUTO440) - Blue
    I recommend this product
    Product Standouts good balance, comfortable handle, sharp, nice weight
    Rated 5 out of 5 stars
    4 months ago
    Well balanced and sharp knife

    Knife works very well, it's a big blade but is very easy to use with small hands. cuts even tough squash easily.

    Was this helpful?
Show More

5.5-Inch Blue Nakiri Knife in ACUTO440 Steel

The 5.5" Nakiri Knife (ACUTO440) in Blue is built for fast, clean vegetable prep: a straight-edge blade gives full cutting-board contact for even slices and chops, and the wide blade face helps you scoop and transfer ingredients straight into the pot. It is made with AICHI ACUTO440 Japanese steel for exceptional sharpness and edge retention, with lab-tested rust resistance.

If you do most of your prep with up and down chopping (think onions, carrots, cabbage, or herbs), a nakiri-style profile is a practical upgrade from an all-purpose knife. This blade also includes a gently curved tip, so you can switch to rock-chopping when you want. For more shapes and sizes, browse the Single Knives lineup, or compare across the broader kitchen knives range.

ACUTO440 is designed to resist rust in real kitchens: Misen notes lab testing that withstood 50 days submerged in water and up to 100 dishwasher cycles. Even so, the recommended routine is simple and protective, hand wash, then dry immediately after use. The page also notes that high-carbon knives may show cosmetic discoloration after acidic foods and or salt, which is different from rust (described as extremely rare).

In hand, the 5.5 in. blade length keeps the knife nimble for tight prep tasks, while the 50 mm blade height and wide surface make ingredient pickup easy. Specs include a 50/50 symmetrical grind with a 14 per-side edge, HRC 58 , and a 0.34 lb weight. For more detail on maintenance and best practices specific to this steel, the Acuto Knives Care guide is a helpful reference.

Frequently Asked Questions About Nakiri Knives

What is this nakiri knife designed to do best?

It is designed for fast, clean vegetable prep. The straight-edge blade is meant to make full contact with the cutting board for clean, consistent chopping, and the wide blade surface helps with scooping and transferring chopped ingredients into a pan or pot.

Is the ACUTO440 steel rust-proof and dishwasher safe?

Misen states the AICHI ACUTO440 steel has lab-tested rust resistance that withstood 50 days submerged in water and up to 100 dishwasher cycles. For everyday care, the recommended use and care is to hand wash and dry immediately after use.

How often should I sharpen this knife?

The use and care guidance recommends sharpening every 4 to 6 months. If you prefer not to sharpen at home, Misen also offers a mail-in knife sharpening service for any knife, which can be a convenient option to keep your edge consistent.

What are the key dimensions and specs?

The blade length is 5.5 in. (140 mm) with a total length of 10.43 in. (265 mm). It weighs 0.34 lb (155 g) and has a 50 mm blade height. The edge is a 50/50 symmetrical grind at 14 per side, with HRC 58 steel.

Will the blade discolor with certain foods?

The page notes that high-carbon knives may show discoloration after exposure to acidic foods and or salt. This is described as purely cosmetic and different from rust. Following the recommended routine to hand wash and dry immediately can help keep the blade looking its best.