This CPM S35VN stainless steel data sheet highlights the edge retention and toughness of this knife steel. CPM S35VN is a tougher version of the popular CPM S30V, due to the addition of niobium. With the addition of .5% niobium, niobium carbides are formed, making CPM S35VN tougher and better able to hold an edge. Machinability and polishibility are also improved.
|Wear Components for Food and Chemical Processing|
|Plastic Injection Screws|
Average Pitting Potential measurements from Polarization Curves run in 5% NaCl (Sodium Chloride) Solution at Room Temperature: (Higher voltage pitting potential indicates better corrosion resistance.)
Preheat: Optional preheat stage for unbalanced geometries or complex designs - Heat to 1550-1600°F (845-870°C) Equalize.
Austenize: 1900-2000°F (1035-1095°C), hold time at temperature 15-30 minutes.
Quench: Air or positive pressure quench (2 bar minimum) to below 125°F (50°C), or salt or interrupted oil quench to about 1000°F (540°C), then air cool to below 125°F (50°C). Accelerated air quenching works well for thin sections, while minimizing warpage.
Tempering: Double temper at 400-750°F (200-400°C). Hold for 2 hours minimum each time. (See Table) A cryogenic treatment may be used between the first and second tempers. Cryogenic treatments help to attain maximum hardenability and must always be followed by at least one temper. NOTE: CPM S35VN may be tempered at 1000-1025°F (540-550°C)for optimum stress relieving, . Tempering in this range may result in a slightly lower corrosion resistance.
Cryogenic Treatments: Refrigeration treatments may improve long term dimensional stability by transforming retained austenite. Refrigeration treatments should generally be performed after the first temper, and must be followed by a temper.
Heat Treat Response
|at Aust. Temp.||30 min.||30 min.||15 min.|
|Modulus of Elasticity||30psix10(6) (200 GPa)|
|Density||0.278 lb/in3 (7640 kg/M3)|
|Thermal Conductivity||14.0 BTU/hr./ft./F 24.2 W/m/ °K)|
|CARTA Test Results||Transverse C-Notch|
|CPM S35VN||145%||12.0 ft. lbs.|
|CPM S30V||145%||10.0 ft. lbs.|
|154 CM||120%||2.5 ft. lbs.|
|440C||100%||2.5 ft. lbs.|