Fällkniven A1xb Survival Knife – black CoS laminated steel blade – black Thermorun handle

The Fällkniven A1xb fixed-blade survival knife combines the rugged construction of the X series with an all-black finish. This large fixed-blade knife features a 16.1 cm blade, a thickness of 7.0 mm, and a flat, visible spine around the handle. Its proportions make it ideal for outdoor enthusiasts who prefer a sturdy blade and a generous grip.

The laminated steel consists of a CoS (Cobalt Special) core and two outer layers of 420J2 stainless steel. The core forms the cutting edge, while the more flexible flanks complete the structure. The convex grind gradually supports the cutting edge and is one of Fällkniven’s signature technical features.

This version features a black tungsten carbide coating, chosen for its hardness and wear resistance. It gives the A1xb a dark finish that matches the Thermorun scales. Their textured surface and the guard help keep the knife securely in hand during cutting tasks.

The rigid Zytel sheath includes a knife retainer and an additional travel lock. This dual security system protects the blade and keeps the knife securely in place while on the move.

Technical specifications of the Fällkniven A1xb fixed-blade survival knife:
Manufacturer’s part number: A1xb
Overall length: 28.4 cm
Blade length: 16.1 cm
Blade thickness: 7.0 mm
Steel: CoS laminated
Structure: 420J2 / CoS / 420J2
CoS core hardness: 60 HRC
Grind: convex
Edge: smooth
Blade finish: black tungsten carbide coating
Construction: flat ground, full tang
Handle: black Thermorun scales
Sheath: Zytel, with travel lock
Weight of knife only: 401 gr

Tellknives Review:
This black version is just as well-balanced as the satin version, but with a tactical touch that we quite like: the coating visually extends the handle and highlights the A1xb’s massive silhouette. Weighing in at 401 gr, it represents a clear choice in favor of ruggedness. The laminated steel, convex edge, and secure sheath combine to create an appealing package for users looking for a large outdoor fixed-blade knife.