SLD steel is another example of steel developed by Hitachi Steelworks. It is a popular kitchen knives semi-stainless steel, appreciated for its hardness, toughness and significant scratch resistance. It is often used in the production of high-quality kitchen knives, pocket knives, and other cutting tools. Some of the key characteristics of SLD steel include:
- Edge Retention: Thanks to very high carbon content SLD steel is known for its ability to hold a sharp edge for a long time (it is highly wear-resistant), making it a good choice for cutting tools that will be used frequently.
- Toughness: This steel is relatively tough and resistant to chipping or breaking, making it a good choice for cutting tools that will be subjected to heavy use.
- High-Carbon Content: SLD steel has a high level of carbon, which contributes to its excellent edge retention but also makes it more prone to rusting if not properly cared for.
- Ease Of Sharpening: SLD steel is often referred to as easy to sharpen, thus it can be well maintained at home. It is easier to care for than carbon steel.
It is relatively easy to sharpen and maintain, although it may require more frequent sharpening than some other high-carbon steels. SLD steel is also known for its good wear resistance, making it a practical choice for knives that see heavy use. Its standard hardness ranges from 54 up to 58 HRC. Due to its semi-stainlessness, it is more stain resistant than carbon steels but should be maintained with care and washed after use, especially when cutting something acidic.
Composition:
- Carbon: 1.40 - 1.60%
- Chromium: 11.00 - 13.00%
- Molybdenum: 0.80 – 1.20%
- Manganese: 0.60%
- Nickel: 0.50%
- Vanadium: 0.20 – 0.50%
- Silicon: 0.40%
- Copper: 0.25%
- Phosphorus: 0.03%
- Sulfur: 0.03%