Case uses only premium quality steels these include:
Chrome Vanadium (CV) – a special formula of alloyed cutlery steel known for its ease of re-sharpening. A quick touch-up will bring back a chrome vanadium blade’s original sharp edge. (Extra care is needed with CV. Keep a thin film of oil on the blade to maintain the finish of the steel.)
Case Tru-Sharp™ Surgical Stainless Steel – a special high-carbon steel that helps the blades hold an edge longer than conventional steel. It also offers extraordinary blade strength and corrosion resistance.
ATS-34 - ATS is the brand name for this premium steel. Its reputation for edge retention is second to none among the stainless varieties. It is manufactured with very few impurities, combining three principal elements; carbon, chromium, and molybdenum. Added levels of carbon and chromium enhance the steel's hardness and rust resistance qualities. Re-sharpening can require extra effort
How To Identify The Type of Steel Used On Your Knife
There are two ways to identify the type of steel used on Case knives. Today, each steel type has a unique abbreviation that can be found after the pattern stamp on the knife tang. If the knife has stainless steel blades, the letters “SS” will follow the pattern number. In the same fashion, “CV” denotes chrome vanadium, “ATS-34” stands for ATS-34 steel, “154-CM” is 154-CM, and “BG42” is BG42 steel. There is a second way to identify the steel type. This can be observed by looking at the logo stamp on the reverse side of the tang. Refer to “S” in the Case logo. When the logo contains a lightning “S”, the blade is either made of Tru-SharpTM surgical steel or ATS-34. When the logo contains a regular “S” that matches the other letters, the blade is made of Chrome Vanadium. Case SlimLocks are the only knives currently made with BG42 steel. This line of knives carries a special logo stamp. Note: This answer specifically addresses Tru-SharpTM surgical steel (SS), Chrome Vanadium (CV), BG42, ATS-34 and 154-CM steel.
Caring For Your Knives
Everyone would love to purchase a Case knife and have it remain in its perfect, brand-new state forever. But, we all know that once you start using your Case, you never stop. Heres how you can keep those knives looking sharp and working great!
Most experts would agree that the number one rule to follow when cleaning any knife is to work patiently and slowly. If you work too fast or clean too much, you may damage the knife and reduce its value.
The first step in cleaning an older knife is to remove any lint, grease, or dirt. Some of the most common tools for this task are clean, soft rags or cloths, wooden toothpicks, old soft-brushed toothbrushes, and cotton tipped swabs. These tools should be used with light, non-drying, non-staining oil.
Rust spots on older knives should be oiled well and the knife should be allowed to sit for a few days. Rust can then be removed by carefully scraping away the rust spot with the tip of a sharp, stiff knife. Once again, proceed slowly and cautiously. By scraping away only the actual rust, you leave intact any of the original finish that remains.
Many older knives will have sticky adhesive tape residue on the handles from old labels. This can easily be removed with nail polish remover applied to a soft cloth. Acetone is the active ingredient in nail polish remover, so use it in a well-ventilated area. Lighter fluid may also be used for the same task. Extreme care should be taken when using either, for they are both highly flammable.
Re-sharpening Your Knife
Hold the blade at a 10” to 15” angle from the surface of a sharpening stone. Maintain a constant angle and stroke the blade as if shaving a thin layer from the stone. Repeat the stroking motion along the entire edge of the blade starting at the blade heel and working to the tip. Turn the blade over and repeat the process.
Cleaning Blades and Handles
Apply a small drop of oil in the joints of your knife and a small amount of oil on a clean, soft rag or cloth. Then, wipe down the blades and handles with the soft cloth. The inside of the knife can be cleaned with the cotton-tipped swabs and wooden tooth picks. Take special care when using pipe cleaners to avoid scratching the surface with their wire core. Toothpicks or toothbrushes can be used to clean out the crevices in the jigging and other small areas where gunk can accumulate.
Storing Your Knives
When your knife cleaning tasks are complete and your knives once again look shiny and new, store them properly to ensure that they stay clean and rust free. Many experts recommend storing your knives in vinyl rolls with cloth interiors. Knife rolls are also great for transporting your knives to swap meets or knife shows. Display cases with felt interiors are also good for knife storage and they also allow knives to be shown easily.