Differences between Hastelloy and Incoloy

Similar names, but do these two products have anything else in common? Read on, as to learn more about differences between Hastelloy and Incoloy.

Both of these products are alloys. In other words, they are blends of two or (usually) a few more metals of different sorts. What makes alloys special is the fact that they inherit features from each and every of their ingredients. Alloys could be distinguished on the basis of a host of different features, for instance, the susceptibility to change shape, whenever subject to pressure.

Before we delve into the issue of differences between Hastelloy and Incoloy, let’s consider a few similarities first. As a matter of fact, both of these products are quite popular among nuclear engineers. This could be ascribed to the fact that both alloys are well-known for their outstanding resistance to corrosion, which is definitely an important issue for that industry.

If we delve into the actual differences between Hastelloy and Incoloy, it turns out that the main distinction lies in the issue of their composition. Consider this: the latter is mostly based on nickel. Looking at the actual figures, it turns out that Incoloy contains around 40 percent of that metal. More than that, it is replete with sulfur, as well as iron. When you look at the former alloy, you will quickly realize that the actual contents are way different. Of course, it contains some nickel, but the amount is not that significant. As a matter of fact, Hastelloy is mostly made of cobalt, chromium, and molybdenum.

Continuing with the issue of the differences between the two products, they mostly vary from one another in terms of alloy-specific features. If you look at the tensile strength ratio, for instance. This is an umbrella term for the material’s susceptibility to pressure and capability of retaining shape. In other words, this is a way of measuring the probability of the material’s risk of changing its form. Here, it is Hastelloy that ranks way better.

When it comes to the alloys’ performance against the heat, the two have outstanding results. As it turns out, though, Hastelloy b-2 is way better in terms of melting range than the opponent. Its actual ratio roams around 2500 F. And how about Incoloy? Well, it is only 170. And by only we are not intending to say that this is a bad score by any means. However, it definitely pales in comparison with the other alloy in question.

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