What are the Interesting Things to Know about High-Temperature Fasteners?

Posted by superscrews on November 24th, 2020

Fasteners are among the most crucial components needed in almost every industry and application. The primary purpose of fasteners is to connect two parts firmly with each other. To be precise, fasteners also referred to as bolts are available in many varieties.

Each type of fastener has its own set of features and traits, which makes them unique from each other. Based on the application, the fastener is selected. Weld Nuts Manufacturer always ensures that the weld nuts manufactured by them are durable and versatile.

In case you don’t know, a weld nut is that variety of a nut that can be welded into another workpiece. It is important to note here that a majority of weld nuts or weld fasteners are made from stainless steel.

Stainless steel has got high-temperature resistance which makes these nuts ideal for welding purposes. So let’s take a glance at some of the interesting things to know about high-temperature fasteners.     

How was the Need for High Temperature felt?

It is a widely accepted fact that regular metal fasteners have a tendency to melt when the temperature crosses the three-digit mark. At a temperature of 1000-degree Fahrenheit, standard fasteners would be rendered ineffective.

Even if the fasteners are manufactured with high-grade steel, there is always a chance of them undergoing oxidation that can speed up the process of corrosion. Let’s cite another example in this context.

When the machine parts that use regular metal fasteners generate heat, the fasteners attached to the machinery expand. With their expansion, they tend to exert pressure on the holes they are driven to.

Interestingly, when the machine returns to its original temperature, the metal fasteners usually contract. But note that this contraction process can make them loose within the holes. This is the reason for the introduction of high-temperature fasteners.

As these fasteners are adept in withstanding the phases of alternate heat, they are considered the best option in many industries. 

Types of Alloys used to make Metal Fasteners

Nowadays, metal fasteners are made from a wide range of alloys apart from stainless steel. As we all know, stainless steel is a bit costly. Besides these alloys have great temperature resistance when compared to stainless steel. So here are some of the common alloys used by automotive fasteners manufacturers.

✔A-286 Alloy

To be precise, the A-286 alloy is an alloy of chromium, iron and nickel. As it comprises iron in greater percentages, it hardens with age and has great tensile strength. What’s more, you get good oxidation resistance from this alloy.

✔Nickel Alloys

As nickel alloys have good oxidation resistance, they can survive high temperatures. This is one of the primary reasons behind their usage in metal fasteners.

✔Stainless Steel 630

It is one of those alloys that have great strength and oxidation resistance. They are most commonly used in fasteners for expensive pieces of machinery.

If you are looking for fasteners that can withstand high temperatures, then metal fasteners are your ideal choice.