Crucible CPM S35VN Stainless Steel 6.99 x 38 x 914mm

Description

One bar of Crucible CPM S35VN Stainless Steel measuring 6.99 x 38 x 914 mm. A premium martensitic stainless steel designed to offer improved toughness over CPM S30V. It is also easier to machine and polish than CPM S30V.

It has a reduced vanadium content; additional 0.5% of niobium and the nitrogen inclusion has been removed (incidental nitrogen is still present). These changes in composition make CPM S35VN 15 – 20% tougher than CPM S30V without any loss of wear resistance. This increased toughness lends to better resistance to edge chipping.

CPM S35VN offers an excellent balance of hardness, improved toughness and corrosion resistance. It also maintains an excellent wear resistance and edge retention (improved over conventional high chromium steels such as 440C and D2). Able to become razor sharp. Highly regarded as one of the best knife steels. Great for a range of knives including hunting, bushcraft, folding and tactical where toughness and wear resistance is essential.

Comes annealed (soft) and Blanchard surface ground to remove mill scale.

Alloy Composition:

Recommended Heat Treatment:

• Seal blade in double crimped high temperature Stainless Steel Tool Wrap
• Preheat to 760°C, hold for 5 minutes
• Austenitise at 1065°C for 30 minutes
• Plate quench
• Cold treatment; domestic freezer, dry ice slurry, liquid nitrogen – the colder the better
• Temper at 150-230°C for 2 hours, twice

Recommended working hardness 59 – 63 HRC

For maximum hardness at a small loss in toughness:

• 760°C 5 minutes
• 1105°C 20 minutes
• Plate quench
• Liquid nitrogen cryo
• Temper at 150°C for 2 hours, twice, for 64 HRC

If not using liquid nitrogen or dry ice:

• 760°C 5 minutes
• 1030°C 30 minutes
• Plate quench
• Kitchen freezer
• Temper at 200°C for 2 hours, twice

Often purchased with: Folding Knife Parts, Pins Fasteners and Quench Plates

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