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Is 15-5 Stainless Steel Magnetic?

Is 15-5 Stainless Steel Magnetic?

If you’re researching stainless steel, you might have come across the term “15-5” and wondered if it is magnetic. The answer is that 15-5 stainless steel is not magnetic—at least, it’s not strongly magnetic. That said, there are certain conditions under which this alloy can become slightly magnetic. Let’s take a closer look at why this is and what makes 15-5 unique.

What Is 15-5 Stainless Steel?

15-5 stainless steel is a martensitic, chromium-nickel alloy that contains copper and nitrogen (in addition to chromium and nickel). It has excellent mechanical properties, toughness, and good corrosion resistance against atmospheric environments. The alloy is designed to be hardened by heat treatment up to 58 HRC (Rockwell C scale) to achieve maximum strength and wear resistance.

Is 15-5 Magnetic?

The short answer is no—15-5 stainless steel isn’t strongly magnetic so it won’t stick to magnets or other metal objects like some types of stainless steel. However, some conditions may cause the alloy to become slightly magnetized due to stresses caused by welding or forming. As a result, you may be able to detect a very slight attraction between the metal surface and a magnet if you hold one near it. This shouldn’t impact performance or usability; it’s simply an interesting technicality of the material’s properties.


To sum up, 15-5 stainless steel isn’t normally considered a magnetic material since its composition effectively cancels out its inherent magnetism. However, under certain circumstances, such as when being welded or formed into shape, the material may develop some level of magnetism that can be detected with a strong enough magnet. All in all, though, 15-5 offers excellent mechanical properties and good corrosion resistance, which make it ideal for many applications where magnetism isn’t an issue. Knowing whether this alloy is right for your needs depends on multiple factors, including cost and usage environment—so consult an expert before purchasing!

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