What’s the Difference Between Compression Springs and Die Springs?

It can be easy to confuse compression springs and die springs as they function in an extremely similar way. However, in actual fact the two springs differ in many ways, but just what are the factors that set them apart?

What are Compression Springs?

As manufacturers of compression springs, we like to think we are experts in this type of spring. The helical compression spring is perhaps one of the most common spring types and has a wide variety of uses. They are used in many objects we use in our day to day activities, from business to home life. Due to their versatility, compression springs are used in everything from valves to switches and even indoor mechanisms.

Generally, these springs are made up of helically formed coils. They are used to push back on an applied force or load which makes it return to its original position when released. In more simple terms, they are designed to resist compressive forces. When the coil shortens in length, it stores mechanical energy whilst under stress.

While you may think that a compression spring is just the one type, this variety of spring branches out into several types. Conical, hourglass and barrel-shaped are all in the list of variants of compression springs alongside torsional and magazine springs. While these are all in the group of compression springs, they offer the advantage of a reduced solid height as they are not designed as straight as a regular compression spring.

The unique design of this spring means that their compressed and helix shape allows them to resist compressive forces. In turn, this means that they can be manufactured, as mentioned above, into anything from cylindrical to conical and even into a concave shape, with variable or constant pitch and a choice of ground or unground ends.

What are Die Springs?

The die spring is often referred to as a ‘high force compression spring’, which is why it may be confused with the compression spring. In a sense, die springs are a stronger, more concentrated, hybrid version of the compression spring, but are made with rectangular wire instead of the otherwise circular counterparts.

While a compression spring has strength behind it, a die spring can take a much higher load when required to do so. In fact, a die spring can withstand approximately 30% more pressure than a standard compression spring, as well as being able to spring into action under temperatures up to 475 degrees Celsius.

The extra resistance which die springs are known for gives them greater strength and a decrease in load loss compared to compression springs, which is why it is they are used for things as clutches and brakes in vehicles and for heavy machinery applications.

Die springs are the spring of choice when a high force is required or when there are limited installation dimensions or a confined space. Die springs come in 4-5 distinct types of force class to choose from, ranging from 1 to 5. To achieve the best outcome from your choice of die spring you should always choose the most appropriate force class.

So, What’s the Main Differences?

Just because die springs are essentially an enhanced version of the compression spring, that doesn’t necessarily mean they are better in general. If you need a spring for heavy machinery, brake or clutch then a die spring will suffice; however, not all applications need die springs.

difference in springs
Even though it may seem like a die spring is needed for all bulky applications, compression springs will do the job just fine, if not similarly to a die spring, but with the added benefit of being able to easily be manufactured in larger quantities. Plus, many items and some machinery are limited to the use of only compression springs, due to the way they have been manufactured.

No matter what spring you need; compression or die, here at European Springs Ireland, we make sure we put all our efforts, time and accuracy in creating springs of the highest quality for your projects.


Alongside our up-to-date technology, our methods and attitude make a recipe for success, in both our business and in our products.

If you require either die springs or compression springs, for whatever the application, we can certainly help. We would love to hear from you, so simply call us on +44 (0) 208 663 1800 or send our friendly and experienced team an email at  ieinfo.bec@europeansprings.com. Alternatively, you can find us on Facebook, Twitter, or Google +, and we even have a handy enquiry form on our website.

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