ISZ KNIVES Handle

Handle

This is an introduction to the handle material used in ISZ KNIVES.

Handle plate

・Chloroprene Rubber

・CFRP

- Ultrex™ SureTouch

・Ultrex™ G10

・Ultrex™ Micarta

Handle pin

・Ti6AL4V

・Titanium

・Zirconium

・CFRP

・GFRP

Ultrex™G10

The main handle material used by ISZ KNIVES is Ultrex™ G10.

Ultrex™ G10 uses a different resin than the traditional G10, and when used as a handle, it feels smooth and comfortable in the hand, providing excellent grip.

It also has very low water absorption, making it a reliable material from a hygienic standpoint.

It also has improved durability, meeting military-spec standards.

However, in areas that require utmost weight reduction, such as the ISZ V series, Ultrex™ Micarta is the material of choice.

Carbon Fiber

All CFRP used at ISZ KNIVES is dry carbon.

CFRP (carbon fiber reinforced plastic) is extremely lightweight, yet boasts exceptional performance, with a specific gravity 1/4 that of steel, 10 times the specific strength, and 7 times the specific modulus of elasticity.

It boasts numerous features, including abrasion resistance, heat resistance, thermal expansion/contraction, and chemical resistance.

However, due to its electrical conductivity, careful consideration must be given to its use in products requiring insulation.

It also has a weakness: it can easily break depending on the fiber direction.

Carbon fiber also comes in a variety of weaves, including unidirectional UD, plain weave, and twill weave, depending on the application. Furthermore, non-UD models also vary in fiber fineness, such as 18K, 12K, and 1K.

Carbon fiber is primarily composed of laminated sheets, with a woven pattern on the surface and UD on the interior. Considering cost performance, this type is the majority of models sold on the market.

Full-layer models, made entirely of woven laminated sheets, differ from UD models in that the fibers are woven together, allowing them to withstand loads from all directions, while retaining the inherent durability of carbon fiber. However, they are also more expensive.

Among carbon fibers, 1K full-layer models are the most expensive, but because they are strong and extremely lightweight, they are only used in special models.

It is an attractive material for knife handles, but because of its surplus performance, its design becomes the main focus.
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Titanium

Titanium is a lightweight, strong, and highly corrosion-resistant metal. It's also an essential high-performance material for motorsports and the aerospace industry.

Titanium is available in a wide variety of alloys, with Ti6AL4V boasting overwhelming strength and proven performance. Its fatigue strength and fracture toughness are among the best of all metals, but its drawbacks include poor workability and very poor wear resistance, making it unsuitable for blades.

However, when used for knife handle pins and bolts, it is extremely robust and unmatched.

As mentioned above, all handle materials are over-specified, enhancing knife performance with their strong grip and robustness.

Zirconium

Like titanium, zirconium is a lightweight rare metal with excellent corrosion resistance to seawater and acids.

Alloyed zirconium, in particular, is primarily used in the nuclear industry as cladding for nuclear fuel rods, and due to its high biocompatibility, is also used in implants.

Zirconium is a rare metal used for more specialized applications and is more expensive than titanium.

Overseas, it is used in EDCs and top luxury watches.

Due to its rarity, it is considered a higher-grade material than titanium.

Another feature is the formation of a hard, black coating when heat-treated.