Exploring Blue Steel #1: The Ultimate High-Carbon Steel for Knives

  • March 1, 2025

  • In the modern world, cooking is more than just a task—it is an art form. And one of the most crucial tools that support this art is the knife. In Japan, choosing the right knife directly impacts the quality of cooking, and one of the most highly regarded steels for this purpose is Blue Steel #1 (Blue Paper Steel #1). In this article, we will explore why Blue Steel #1 continues to captivate chefs and cooking enthusiasts worldwide.

  • The Fundamentals and Features of Blue Steel #1

  • Blue Steel #1 is a special high-carbon steel with a precise balance of tungsten and chromium. This composition enhances its exceptional sharpness and outstanding durability, making knives that last for decades. In Japan, this steel is crafted using traditional forging techniques, with artisans treating it as a work of art. The result is a knife that combines stunning aesthetics with exceptional performance.

  • Why Blue Steel #1 is Popular Worldwide

  • Knives made from Blue Steel #1 are highly valued among professional chefs globally. They allow for precise cuts that maintain the freshness of ingredients, making them perfect for delicate Japanese cuisine such as sushi and sashimi. This is why many high-end sushi restaurants and Michelin-starred establishments choose Blue Steel #1 knives.

  • However, due to its high hardness, this steel requires advanced handling skills. While it may be challenging for beginners, mastering it can greatly enhance a chef’s skill level. When slicing with a well-honed Blue Steel #1 knife, the unparalleled sharpness is something that can only be truly appreciated through experience.

  • The Importance of Proper Maintenance

  • To maximize the performance and longevity of a Blue Steel #1 knife, careful maintenance is essential:

    • Prevent Rust: Because of its high carbon content, Blue Steel #1 is prone to rust. It should be thoroughly dried after use.
    • Regular Sharpening: To maintain its razor-sharp edge, frequent sharpening with the right whetstone is necessary.
    • Proper Storage: Store the knife in a dry and well-ventilated area to prevent moisture buildup.

  • With proper care, a Blue Steel #1 knife can maintain its superior sharpness and performance for decades.

  • Conclusion

  • Blue Steel #1 is an exquisite steel that embodies both quality and beauty. For professional chefs who demand exceptional sharpness and durability, as well as for dedicated home cooks looking to elevate their skills, it is an irresistible choice.

  • Owning a Blue Steel #1 knife means experiencing Japan’s rich craftsmanship and technical expertise in your daily cooking.

  • With the power of Blue Steel #1, your cooking will reach new heights—an expression of art on every plate. That is the true charm of Blue Steel #1.

Blue Steel #1

The Blue Steel #1 collection introduces knives made from Blue Steel, enhanced with chromium and tungsten for better wear resistance. These knives offer high carbon content for sharp cutting abilities.

Blue Steel #1

Blue Steel #2

The Blue Steel #2 collection features knives made from a specially formulated steel that includes tungsten and chromium for improved wear resistance and sharpness retention.

Blue Steel #2

Material of Knife

By introducing the materials used in knives, we aim to help customers understand the quality and performance of knives, enabling them to find the perfect knife that meets their needs and preferences.

Japanese Knife Materials

The Origin of Craftsmanship

  • The Warmth of "Thank You" – The Spirit of Traditional Craftsmanship

    For generations, this craft has been more than just creating forms—it has been about nurturing the warm connections between people. We, as traditional craftsmen, infuse each piece of wood, fabric, and metal with years of wisdom and the passion of our forebears. Every creation is made with the intention to eventually hear "thank you", and to be able to say it ourselves, all crafted with heartfelt care.

  • In the process of making each piece, every detail is attended to with meticulous dedication and careful handwork, each stroke of the craft carrying a hope for the future. When our customers hold a piece in their hands and meet it with warm words and smiles, it rekindles our own sense of gratitude. This chain of gratitude naturally extends into the next piece we create—it is the very essence of traditional craftsmanship.

  • The phrase "to be spoken to with thank you, and to say thank you" is not merely a wish; it is our solemn vow. Moving forward, we will continue to cherish both our materials and our hearts, pouring our gratitude into every piece as we walk this timeless path.

KIREAJI's Three Promises to You

  • japanese_knife_made_in_Sakai

    1. Exceptional Japanese Knives

    Our knives, crafted by Sakai City's master artisans, combine traditional techniques with carefully selected materials, delivering unrivaled sharpness and durability.

  • Honbazuke

    2. Genuine Sharpness

    We offer free Honbazuke sharpening performed by skilled craftsmen, ensuring that you experience the authentic sharpness of a true Sakai knife.

  • 3. Lifetime Knife Use

    Each knife comes with a free Saya (protective sheath) for added durability. We also offer after-sales service through a trusted Sakai City workshop to maintain your knife's performance.