N690 Stainless Steel Knife Blade Blank

Description

N690 Stainless Steel Knife Blade Blank. Made from N690 stainless steel – a high hardness, fine-grained stainless steel. It is comparable to AEB-L, 12C27, and 14C28N and it offers exceptional corrosion resistance, superior toughness, and excellent fine edge retention.

These knife blanks are annealed and have a very basic profile. This means that you will need to tidy up the profile, grind the bevels, drill pin holes, heat treat and fit a handle.

Features and Benefits

• All blanks are 4.9mm (3/16″) thick, and approx. 25-33mm wide
• Available in 3 lengths:
  • Large – approx. 285mm Long
  • Medium – approx. 255mm Long
  • Small – approx. 200mm Long

PLEASE NOTE: Final product you receive may vary slightly due to randomness of profiles and shapes

Recommended Heat Treatment

• Coat blade in an anti scale compound or seal in double crimped 321 or 309 grade stainless steel tool wrap
• Austenitise at 1050-1100°C and hold for 10 minutes.
• Quench between aluminium plates, or air quench
• Immerse in liquid nitrogen or a dry ice slurry or place in a kitchen freezer for 1 hour or more – the lower the temperature the more austenite will be converted to martensite and the higher the as-quenched hardness will be
• Temper at 150-230°C for 2 hours, twice, depending on desired hardness

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