We tested five top-rated knife sharpeners to see how they compare with ease of use, sharpening ability and value. One stood ...

For instance, varying the amount of carbon along with elements like chromium, nickel, or manganese can produce different types of steel, such as stainless steel or tool steel, each with distinct ...

Here’s a look at how material engineers fine-tune the properties of steel alloys. In the iron-carbon alloys, an important phase transformation (the A3 transformation) takes place between about ...

Regular steel is an alloy of 99% iron and between about 0.2% and 1% carbon, while stainless steel typically contains between 62% and 75% iron, up to 1% carbon, and more than 10.5% chromium.

Steel is an alloy of iron and carbon; it's mostly iron, but the crucial addition of between 0.2% and 1% carbon makes it harder, stronger and more resistant to rusting than pure iron.