Kubey KB Knives Steelhead Darkwashed Titanium, Satin M390 by Mark Perez (KB315B)

Steelhead DarkwashedTitanium, Satin is a compact folder designed by Mark Perez. The blade is made of Böhler M390, considered one of the best knife steels, vacuum-hardened and subjected to a cryogenic stabilization process. This gives the blade exceptional wear resistance and long-lasting cutting edge retention. Handle made of titanium with cross-cut grooves for improved grip. Liner lock guarantees safety and security during use, eliminating the risk of accidental blade retraction. Ball bearings ensure that the knife opens smoothly and quickly. The titanium clip allows for comfortable tip-up carrying.

Kubey is one of the largest manufacturers of high-quality knives at an affordable price! The company's motto is “An Edge Above the Rest”. By using high-speed CNC machine tools, milling machines, laser cutting and custom manual finishing, the brand focuses on quality workmanship and an innovative approach to design.

M390 - martensitic high-performance chromium steel produced by powder metallurgy. Due to the alloy concept, it is characterized by extremely high wear resistance and high corrosion resistance. Thanks to its high wear resistance, it retains the shape of the edge properly, so that the blade remains sharp for a very long time (requires minimal maintenance). Another advantage is the resistance to “wire” formation during sharpening. Steel with a high chromium content of 20.0% (Cr) with an admixture of 1.9% carbon (C), 4.0% vanadium (V), hardened to 59-61 HRC. This super steel is comparable to CPM 20CV or CTS-204P steel from Carpenter. Produced by Böhler Edelstahl in Kapfenberg, Austria.

Vacuum & Cryogenic - M390 steel undergoes a specialized heat treatment process involving two key stages. Vacuum Heat Treatment: the steel is hardened in a vacuum environment, which minimizes oxidation and ensures more uniform metal properties. This process increases the strength and structural integrity of the steel. Cryogenic Treatment: After heating, the steel is rapidly cooled to extremely low temperatures, often below -100°C (-148°F). This transformation converts retained austenite into martensite, significantly increasing hardness, wear resistance and overall durability. Thanks to these advanced processes, M390 steel ensures exceptional performance, offering both razor-sharp edge retention and extraordinary blade durability.

Blade - Reverse Tanto type, covered with industrial machine satin finish (belt satin). The thickness of the blade in combination with the high, flat grind gives excellent cutting edge geometry and extreme cutting performance. Ceramic ball bearings ensure that the mechanism runs smoothly and help to open the blade with the help of a flipper, which, when opened, forms a mini guard to prevent the hand from sliding onto the blade. The knife can also be opened using a groove in the blade. The whole is locked with a proven and popular liner lock.

Handle - made of titanium 6AL4V with characteristic transverse grooves, a material with extremely high mechanical strength and practically completely resistant to weather conditions and chemicals. Finished with a scratch-masking Darkwashed method. The whole is screwed to a solid backspacer, also made of titanium 6AL4V. The simple, robust design guarantees many years of use. The forefinger groove improves grip. The single-position (right) titanium deep carry clip allows the knife to be carried discreetly in the pocket in a tip-up position (with the tip of the blade up).

Technical data:

Product number: KB315B
Product name: Steelhead Darkwashed Titanium, Satin M390

Overall length: 181.0 mm / 7.13”
Blade length: 79.0 mm / 3.15”
Blade thickness: 3.1 mm / 0.12”
Handle length: 102.0 mm / 4.02”
Handle thickness: 12.0 mm / 0.47”
Weight: 95.0 g / 3.35 oz

Blade material: Böhler M390
Blade hardness: 60-62 HRC
Blade grinding: Flat
Blade finish: Belt Satin

Handle material: Titanium 6AL4V
Handle finish color: Darkwashed 
Backspacer material: Titanium 6AL4V
Backspacer color: Grey

Clip: Right, Tip-Up
Clip material: Titanium

Pivot mechanism: Caged Ceramic Ball Bearing
Lock: Liner Lock
Opening method: Manual, flipper, nail nick
Additional accessories: N/A

Designer: Mark Perez
Brand: KB Knives
Manufacturer: Kubey Knife
Country of origin: P.R.C.

Development: Sharg® company