Is Sleipner a stainless knife steel?

No. Sleipner contains 7.8% chromium and offers some corrosion resistance, but it is not stainless. Clean and dry the blade after use and apply a light protective oil before longer storage.

What hardness does Kizlyar Supreme use for Sleipner?

Kizlyar Supreme Sleipner blades are typically targeted around 61–63 HRC, depending on the knife model, blade geometry and production run. The exact specification of the individual model should take priority.

How does Sleipner compare with D2?

Uddeholm positions Sleipner as a versatile conventional tool steel and a possible upgrade where additional resistance to chipping or wear is needed over traditional D2. In a knife, heat treatment and edge geometry remain essential to the result.

Is Sleipner difficult to sharpen?

Sleipner is wear resistant but can be sharpened reliably with good diamond, ceramic or modern water stones. Use a stable angle suited to the knife's work and finish with light strokes to minimise the burr.

How should a Sleipner knife be cared for?

Remove moisture, salts, food acids and plant residue promptly; wash only as appropriate for the knife, dry completely and apply a thin layer of suitable oil. Never store a damp carbon or tool-steel blade inside its sheath.

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D2

TO MATERIALS

STEEL DESCRIPTION

CARBON (C) 0.90%
SILICON (SI) 0.90%
MANGANESE (MN) 0.50%
CHROMIUM (CR) 7.80%
MOLYBDENUM (MO) 2.50%
VANADIUM (V) 0.50%

Uddeholm Sleipner is a conventional cold-work tool steel with an unusually broad balance of wear resistance, edge stability and resistance to chipping. Uddeholm describes it as a versatile upgrade where more wear or chipping resistance is required than traditional A2 or D2 can provide.

WHY IT WORKS IN KNIVES
For a knife user, Sleipner's attraction is balance. It can take high hardness while retaining useful toughness, so a well heat-treated blade can hold an aggressive working edge without being unnecessarily fragile. Heat treatment and blade geometry remain just as important as the steel name.

KIZLYAR SUPREME HEAT TREATMENT
Kizlyar Supreme has used Sleipner in selected production runs, with knife blades typically targeted around 61–63 HRC according to the model and geometry. Controlled hardening and tempering are essential to develop the steel's edge retention, strength and resistance to chipping. Availability is not continuous, so always check the specification of the exact knife and production version.

CUTTING AND SHARPENING
Sleipner supports a keen, stable edge and performs well in fixed blades ranging from compact field knives to larger outdoor tools. It is generally more approachable to sharpen than some very high-carbide wear-resistant steels. Quality diamond, ceramic or modern water stones are appropriate; match the angle to the knife's intended work.

CORROSION AND CARE
With 7.8% chromium, Sleipner is not stainless. It offers some corrosion resistance but should be wiped clean and dry after use, especially after contact with moisture, salt, food acids or plant sap. Apply a thin coat of suitable protective oil before longer storage and do not store a damp knife in its sheath.

KEY ADVANTAGES
• Broad balance of wear resistance and toughness
• Good resistance to edge chipping
• High attainable hardness and stable cutting performance
• Good machinability and grindability for a tool steel
• Suitable for many fixed-blade sizes and working geometries

CONSIDERATIONS
• Requires routine corrosion care
• Final performance depends strongly on heat treatment and edge geometry
• Kizlyar Supreme Sleipner models may be historical or produced in limited runs when the steel is available

The composition and baseline material properties above are based on Uddeholm's official Sleipner technical information.