{"id":362,"date":"2025-05-02T23:40:47","date_gmt":"2025-05-02T14:40:47","guid":{"rendered":"https:\/\/media.sakurajapaneseknife.com\/us\/en\/?p=362"},"modified":"2025-05-02T23:40:48","modified_gmt":"2025-05-02T14:40:48","slug":"aogami","status":"publish","type":"post","link":"https:\/\/media.sakurajapaneseknife.com\/us\/en\/aogami\/","title":{"rendered":"What Is Aogami (Blue Paper) Steel? Unraveling the Charm of Yasugi Steel and the Real-World Performance of Aogami Super"},"content":{"rendered":"\n

Have you ever found yourself thinking, \u201cI wish I could slice through ingredients more smoothly,\u201d<\/em> or \u201cIf I\u2019m getting a new knife, I want one that will last for years\u201d<\/em>? <\/p>\n\n\n\n

I know I have. Back when I used to cut tomatoes with a cheap stainless-steel kitchen knife, they would often end up squashed rather than cleanly sliced. I remember feeling so frustrated, muttering \u201cThis is so hard to cut\u2026\u201d each time.<\/p>\n\n\n\n\n\n\n\n

But then one day, I came across a knife forged from something called Aogami<\/strong> (\u9752\u7d19\u92fc, meaning \u201cBlue Paper steel\u201d<\/em>) at a traditional blacksmith\u2019s shop. <\/p>\n\n\n\n

I was instantly smitten by its cutting performance. The blade slid through food so cleanly and effortlessly that it gave me a little rush\u2014almost like my cooking skills had suddenly leveled up!<\/p>\n\n\n\n\n\n\n\n

Aogami<\/strong> might sound unfamiliar (just like its counterpart Shirogami<\/strong>, or White Paper steel). In fact, even typing aogami-kou<\/em> into a Japanese computer won\u2019t convert to the kanji without a special effort, which shows you how uncommon the term is in everyday use.<\/p>\n\n\n\n

\"Comprehensive<\/figure>\n\n\n\n

Both Aogami and Shirogami are part of the family of high-quality Yasugi steels<\/strong> produced by Hitachi Metals, each distinguished by its carbon content and added alloys. <\/p>\n\n\n\n

In this article, we\u2019ll cover the basics of what Aogami (Blue Paper) steel is, how it differs from Shirogami, and take an in-depth look at the high-end Aogami Super<\/strong> steel \u2013 including its features and drawbacks. <\/p>\n\n\n\n

Worried about rust or maintenance? We\u2019ll also address those concerns with practical tips, so you get a complete, real-world picture of what it\u2019s like to use a Blue Paper steel knife.<\/p>\n\n\n

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\n\t\t\t\t\t\tBest Knife Steel Guide: Carbon vs Stainless vs Damascus<\/a>\n\t\t\t\t\t\tFor professional chefs, choosing the best knife steel is extremely important. The type of steel in a knife greatly influences its sharpness, edge retention, …<\/span>\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t<\/div>\n\t\t<\/div>\n\n\n

What is Aogami Steel? Pronunciation & Basics of \u201cYasugi Blue Paper\u201d Steel<\/h2>\n\n\n\n

How to Pronounce \u9752\u7d19\u92fc<\/strong> (\u201cAogami-k\u014d\u201d)<\/h3>\n\n\n\n

First off, how do you say \u9752\u7d19\u92fc<\/strong> in Japanese? Many people might guess \u201cseishi-k\u014d\u201d<\/em> from the kanji, but it\u2019s correctly pronounced \u201caogami-k\u014d.\u201d<\/strong> (\u9752\u7d19\u92fc literally means \u201cblue paper steel.\u201d)<\/p>\n\n\n\n

Even native speakers don\u2019t see this word often\u2014Japanese IME (input typing) usually won\u2019t convert aogami-kou<\/em> to the proper kanji without selecting it from a list\u2014so don\u2019t worry if it\u2019s new to you.<\/p>\n\n\n\n

\"Well-balanced<\/figure>\n\n\n\n

Yasugi Steel and Aogami Steel \u2013 What\u2019s the Connection?<\/h3>\n\n\n\n

Yasugi steel<\/strong> (\u5b89\u6765\u92fc, Yasugi-k\u014d<\/em>) is named after Yasugi City in Shimane, Japan. <\/p>\n\n\n\n

\"Yasugi<\/figure>\n\n\n\n

This region\u2019s steel has a legendary reputation worldwide for making high-end blades and even traditional Japanese swords. Aogami steel<\/strong> is one of the prized variants of Yasugi steel. <\/p>\n\n\n\n

Essentially, Aogami is a high-carbon Yasugi steel with a special mix of alloying elements (like chromium and tungsten) added to the iron and carbon. <\/p>\n\n\n\n

By tweaking the recipe this way, Aogami achieves an excellent balance of properties: it has the hardness and carbon content for top-notch sharpness, plus added elements to improve its toughness and a bit of rust resistance. <\/p>\n\n\n\n

In short, Aogami is a Yasugi carbon steel formulated to hold a sharper edge longer and be less prone to chipping or rusting than a plain high-carbon steel.<\/p>\n\n\n\n

The Appeal of Aogami Steel Knives: Incredible Sharpness and Rust Considerations<\/h2>\n\n\n\n

Why Are Aogami Blades So Sharp?<\/h3>\n\n\n\n

The first reason is the high carbon content<\/strong>. Carbon is crucial for making steel hard and capable of taking a very sharp edge. <\/p>\n\n\n\n

Aogami (Blue Paper steel) is made with a relatively high percentage of carbon, which is a big part of why knives made from it can be insanely sharp.<\/p>\n\n\n\n

Of course, making a blade super hard isn\u2019t enough by itself\u2014you also need it to be durable. This is where the precise blend of alloys<\/strong> in Aogami steel comes into play.<\/p>\n\n\n\n\n\n\n\n

Elements like chromium and tungsten are added in just the right amounts to increase the steel\u2019s toughness (its resistance to chipping or breaking) without sacrificing that hardness. <\/p>\n\n\n\n

The result is an ideal knife material that \u201ccuts like crazy but isn\u2019t fragile.\u201d<\/strong> It\u2019s the kind of balance you might imagine in a legendary samurai sword that can slice through an opponent\u2019s blade without shattering.<\/p>\n\n\n\n

Is Rust an Issue for Aogami Steel?<\/h3>\n\n\n\n

Now, Aogami is a high-carbon steel, so it can<\/strong> rust if you\u2019re careless \u2013 it\u2019s not as stainless as, well, stainless steel. However, as long as you wipe the blade dry after use and avoid leaving it wet, you really don\u2019t need to worry too much. <\/p>\n\n\n\n

In normal kitchen use, if you get into the habit of cleaning and drying your knife promptly, an Aogami steel knife can serve you for years without developing more than a harmless patina.<\/p>\n\n\n\n\n\n\n\n

Speaking of patina, some knife enthusiasts actually enjoy the \u201crust\u201d color<\/strong> that forms on carbon steel over time. Instead of seeing it as ugly corrosion, they see that gradual blue-gray patina as a sign of a well-loved knife. <\/p>\n\n\n\n

Just like a leather wallet gaining character with age or raw denim fading to that perfect worn-in look, a carbon steel knife develops a unique appearance the more you use it. <\/p>\n\n\n\n

At that point, it\u2019s not just a tool \u2013 it\u2019s a treasured partner in the kitchen. (I have to admit, my own happiness goes up when I\u2019m using a knife I\u2019ve taken good care of!)<\/p>\n\n\n\n

Aogami vs Shirogami: Differences, and Aogami Super\u2019s Features & Pros\/Cons (Comparison Table)<\/h2>\n\n\n\n

When choosing a traditional Japanese knife, you might wonder: \u201cSo, which is better, White Paper steel or Blue Paper steel?\u201d<\/em> To help compare these popular Yasugi steels (and introduce Aogami Super<\/strong>), take a look at the table below, which outlines their characteristics side by side:<\/p>\n\n\n

\u30b9\u30af\u30ed\u30fc\u30eb\u3067\u304d\u307e\u3059 <\/i><\/span><\/div>\n
Aspect<\/strong><\/th>White Paper Steel (Shirogami)<\/strong><\/th>Blue Paper Steel (Aogami)<\/strong><\/th>Aogami Super<\/strong> (Blue Super Steel)<\/th><\/tr><\/thead>
Features<\/strong><\/td>Very pure carbon steel with minimal impurities; focuses on extreme sharpness.<\/td>Yasugi steel with added alloy (chromium, tungsten, etc.) for improved durability and slight rust resistance; well-balanced sharpness and edge retention.<\/td>An even more alloy-rich version of Blue Paper steel for higher hardness and toughness (premium performance).<\/td><\/tr>
Advantages<\/strong><\/td>Can achieve an incredibly keen, razor-sharp edge<\/strong>.<\/td>Offers a great balance between sharpness<\/strong> and edge retention<\/strong> (stays sharp longer than White).<\/td>Excellent edge retention<\/strong> \u2013 stays sharp for a long time. Highly regarded by professional chefs and enthusiasts.<\/td><\/tr>
Disadvantages<\/strong><\/td>Rusts very easily<\/strong>; edge dulls faster compared to Blue.<\/td>Still prone to rust<\/strong> (needs care); slightly pricier than White.<\/td>Expensive<\/strong> (premium price). Also harder to sharpen due to its high hardness. Not stainless (care still required).<\/td><\/tr>
Rust Resistance<\/strong><\/td>Low<\/strong> \u2013 very prone to rusting.<\/td>Moderate<\/strong> \u2013 a bit better than White steel, but still requires diligent drying.<\/td>Moderate<\/strong> \u2013 better than regular Blue, but nowhere near stainless-level rust resistance.<\/td><\/tr>
Price Range<\/strong><\/td>Broad range: from budget-friendly up to mid-tier.<\/td>Generally mid-range to high.<\/td>High-end only \u2013 often found in top-tier, artisan knives.<\/td><\/tr>
Ideal For<\/strong><\/td>Purists chasing the absolute sharpest edge<\/strong> and willing to do regular maintenance (sharpening, oiling).<\/td>Cooks who want a balance of sharpness and durability<\/strong>, and don\u2019t mind some upkeep.<\/td>Professional or hardcore users<\/strong> who want the best performance and are willing to invest (and maybe splurge a bit).<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n

As a general guideline, many people start with a White steel knife and then graduate to a Blue steel knife as they become more experienced or want a blade that stays sharp longer. <\/p>\n\n\n\n

In the end, you\u2019ll want to try different steels and see which one feels right for your cooking style and preferences.<\/p>\n\n\n\n

Next, let\u2019s talk specifically about Aogami Super, which is kind of the \u201cultimate\u201d version of Blue Paper steel with its own quirks.<\/em><\/p>\n\n\n\n

What is Aogami Super? Merits & Demerits of Using This Steel<\/h2>\n\n\n\n

Aogami Super<\/strong> (also known as Blue Super steel<\/em>) is a premium high-carbon blade steel made by Hitachi Metals. It\u2019s basically the top grade of the \u201cBlue Paper\u201d Yasugi steels \u2013 think of it as Blue Paper steel on steroids. <\/p>\n\n\n\n

Among the Aogami series, Aogami Super contains the largest amount of alloying elements (like tungsten, chromium, molybdenum<\/em>, and vanadium<\/em> in addition to the carbon). Thanks to this rich composition, Aogami Super has some standout characteristics:<\/p>\n\n\n\n\n\n\n\n

\n
\n
    \n
  • High hardness<\/strong> \u2013 it can be heat-treated to an even higher hardness than standard Aogami.<\/li>\n\n\n\n
  • Long-lasting sharpness<\/strong> \u2013 the edge holds for a very long time due to excellent wear resistance.<\/li>\n\n\n\n
  • Ultra-sharp edge potential<\/strong> \u2013 you can hone it to an extremely fine, razor-like edge.<\/li>\n<\/ul>\n<\/div><\/div>\n<\/div><\/div>\n\n\n\n\n\n\n\n

    This steel is often used in high-end kitchen knives and fine woodworking tools where top-tier sharpness and durability are required.<\/p>\n\n\n\n

    Merits of Aogami Super<\/h3>\n\n\n\n

    Because Aogami Super is harder than the other Yasugi steels, knives made from it can go longer between sharpenings \u2013 the cutting edge simply stays sharp longer<\/strong>. The knife\u2019s performance remains stellar even through heavy use, which is a huge plus if you\u2019re a professional chef prepping a lot of food.<\/p>\n\n\n\n

    Another merit is its trusted reputation<\/strong>. Aogami Super has a kind of cult status among knife aficionados and professionals; it\u2019s known to be a reliable, top-of-the-line steel. If you pick up an Aogami Super knife, you\u2019re using a blade that many experts would agree is among the best of the best in terms of raw performance.<\/p>\n\n\n\n

    That said, Aogami Super might be overkill for a total beginner<\/strong>. It\u2019s a high-performance material, which means it shines brightest in the hands of someone who can appreciate that long edge life and who knows how to care for it properly. (There\u2019s nothing wrong with starting on a simpler steel and \u201cupgrading\u201d to Aogami Super once you\u2019re ready.)<\/p>\n\n\n\n

    Demerits (Drawbacks)<\/h3>\n\n\n\n

    The first obvious drawback of Aogami Super knives is price<\/strong>. They tend to be expensive \u2013 all that performance doesn\u2019t come cheap! If you see a knife labeled Aogami Super, chances are it\u2019s in the high-end tier, sometimes costing hundreds of dollars and often crafted by skilled artisans.<\/p>\n\n\n\n

    Next, because the steel is so hard, sharpening<\/strong> can be a bit more challenging. Aogami Super blades don\u2019t grind away as easily on a whetstone, so you\u2019ll need proper technique and a bit of patience (or the help of a professional sharpener) to tune up the edge. The flip side is you won\u2019t need to sharpen it as frequently as a softer steel.<\/p>\n\n\n\n

    Lastly, remember that Aogami Super is still a carbon steel at heart. It\u2019s not stainless, so you must take the same precautions: wipe down and dry the blade after use, and maybe oil it before storage. It\u2019s less forgiving about moisture than stainless steel knives \u2013 leave it wet and it will spot or rust. So while it\u2019s \u201csuper\u201d in many ways, it\u2019s not magic; good knife care is still required.<\/p>\n\n\n\n

    White or Blue Steel: Which Should You Choose?<\/h2>\n\n\n\n

    So, White vs. Blue \u2013 which one is right for you?<\/strong> It really comes down to your priorities and how much maintenance you\u2019re up for. If you absolutely insist on the sharpest edge possible<\/em> and don\u2019t mind a bit of extra work (and perhaps you\u2019re on a tighter budget), a White Paper steel<\/strong> knife is a fantastic choice. White steel blades can take a wickedly sharp edge, perfect for precision cutting \u2013 as long as you\u2019re willing to sharpen them more often and keep them dry.<\/p>\n\n\n\n

    On the other hand, if you prefer a knife that will hold its edge longer<\/strong> and you want a bit more forgiving nature in terms of upkeep, then a Blue Paper steel<\/strong> knife is likely the better fit. Blue steel\u2019s added alloys give it that extended edge life and a touch more rust resistance, which can be really convenient in day-to-day use.<\/p>\n\n\n\n

    In my opinion, starting with a White steel knife is a great way to learn. You\u2019ll gain experience in sharpening and caring for a high-carbon blade. After you\u2019ve mastered that, you\u2019ll probably appreciate the jump to a Blue steel knife \u2013 the longer edge retention and slightly easier maintenance will feel like a reward for your efforts. (For what it\u2019s worth, I began my own knife journey with a Shirogami blade before moving up to Aogami.)<\/p>\n\n\n\n

    Maintenance for Longevity: Tips to Prevent Rust on Aogami Knives<\/h2>\n\n\n\n

    Owning a carbon steel knife like an Aogami blade means you\u2019ll want to give it a bit of extra TLC to keep it performing beautifully for years. Here are some simple maintenance tips to prevent rust<\/strong> and keep your Blue Paper steel knife in top shape:<\/p>\n\n\n\n

    \n
      \n
    • Wipe the blade immediately after use:<\/strong> Water and acidic juices from foods are the enemies of carbon steel. As soon as you\u2019re done cutting, wipe the blade clean and dry with a cloth or paper towel. Even a quick wipe goes a long way toward preventing rust spots.<\/li>\n\n\n\n
    • Dry it thoroughly after washing:<\/strong> Never leave your knife to air-dry. After washing (with just water or a mild soap), hand-dry the blade completely. Get into all the nooks, and make sure no moisture remains. Store the knife in a dry, well-ventilated place.<\/li>\n\n\n\n
    • Oil the blade for storage:<\/strong> If you won\u2019t be using the knife for a while, or just periodically as extra protection, apply a thin coat of oil to the blade. You can use food-safe mineral oil or a specialized knife oil. This creates a barrier against moisture and slows down any potential corrosion.<\/li>\n\n\n\n
    • Enjoy the sharpening process:<\/strong> Maintaining an Aogami knife also means embracing the process of sharpening it on a whetstone. Regular sharpening will keep that edge as good as new, and many enthusiasts find it rewarding to bring the knife back to razor sharpness. (Since Aogami Super is very hard steel, don\u2019t worry if you decide to have a professional sharpen it until you get the hang of honing such a hard blade yourself.)<\/li>\n<\/ul>\n<\/div><\/div>\n\n\n\n

      By following these steps, you\u2019ll keep rust at bay and ensure your Blue Paper steel knife stays a trusty kitchen companion for a long time.<\/p>\n\n\n\n

      Conclusion: Knowing Aogami Steel Makes Knife Selection More Exciting<\/h2>\n\n\n\n

      The allure of Aogami steel<\/strong> lies in its exceptional combination of a scary-sharp edge<\/strong> and just enough rust resistance to be practical. Once you\u2019ve felt how smoothly an Aogami knife slices (and noticed that it\u2019s not too finicky as long as you care for it), it\u2019s hard not to fall in love. Step up to its higher-grade sibling Aogami Super<\/strong>, and you get truly top-tier performance \u2013 it\u2019s no wonder this steel captivates so many pro chefs and knife enthusiasts.<\/p>\n\n\n\n

      Meanwhile, Shirogami (White Paper) steel<\/strong> has its own special charm. It\u2019s revered for the pure sharpness of its edge and the smooth feel you get when sharpening it. Honestly, whether you go with White steel or Blue steel, you\u2019re in for a treat; each offers a slightly different experience, and discovering those differences is a joy in itself. That\u2019s the fun of exploring these traditional Yasugi steels \u2013 there\u2019s no single \u201cbest\u201d for everyone, just the best for you<\/em>.<\/p>\n\n\n\n

      If you\u2019re worried about maintenance or rust, it\u2019s true that stainless steel knives can be a safer bet for hassle-free use. They\u2019re convenient and certainly get the job done. But trust me, the incredible sharpness and the connection you develop with a carbon steel knife (like one made from Aogami) is on a whole different level. Once you get into it, you might find that a little extra care is totally worth it for the sheer pleasure of using such a knife.<\/p>\n\n\n\n

      \u201cIt might take a bit more effort, but it will make your cooking more fun.\u201d If that idea resonates with you, then I wholeheartedly recommend peeking into the world of Aogami<\/strong> and Aogami Super<\/strong> steels. You\u2019ll likely discover that using one of these knives elevates your kitchen experience, making everyday cooking feel just a bit more special.<\/p>\n\n\n\n

      (On a personal note, I still use stainless steel knives for convenience sometimes \u2013 nothing wrong with that! But when I take the time to maintain and use a carbon steel knife, I often catch myself at the end of the day wiping it down lovingly and thinking, \u201cThis knife really did great work today.\u201d Caring for your tools and using them thoughtfully can turn a routine task into something truly rewarding. Embrace your knife, and happy cooking!)<\/em><\/p>\n","protected":false},"excerpt":{"rendered":"

      Have you ever found yourself thinking, \u201cI wish I could slice through ingredients more smoothly,\u201d or \u201cIf I\u2019m getting a new knife, I want one that will last for years\u201d? I know I have. Back when I used to cut tomatoes with a cheap stainless-steel kitchen knife, they would often end up squashed rather than […]<\/p>\n","protected":false},"author":1,"featured_media":363,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"swell_btn_cv_data":"","footnotes":""},"categories":[4],"tags":[],"class_list":["post-362","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-knife-material"],"_links":{"self":[{"href":"https:\/\/media.sakurajapaneseknife.com\/us\/en\/wp-json\/wp\/v2\/posts\/362","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/media.sakurajapaneseknife.com\/us\/en\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/media.sakurajapaneseknife.com\/us\/en\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/media.sakurajapaneseknife.com\/us\/en\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/media.sakurajapaneseknife.com\/us\/en\/wp-json\/wp\/v2\/comments?post=362"}],"version-history":[{"count":1,"href":"https:\/\/media.sakurajapaneseknife.com\/us\/en\/wp-json\/wp\/v2\/posts\/362\/revisions"}],"predecessor-version":[{"id":364,"href":"https:\/\/media.sakurajapaneseknife.com\/us\/en\/wp-json\/wp\/v2\/posts\/362\/revisions\/364"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/media.sakurajapaneseknife.com\/us\/en\/wp-json\/wp\/v2\/media\/363"}],"wp:attachment":[{"href":"https:\/\/media.sakurajapaneseknife.com\/us\/en\/wp-json\/wp\/v2\/media?parent=362"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/media.sakurajapaneseknife.com\/us\/en\/wp-json\/wp\/v2\/categories?post=362"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/media.sakurajapaneseknife.com\/us\/en\/wp-json\/wp\/v2\/tags?post=362"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}