Leaf springs in different sizes

Leaf springs

Leaf springs: specifications & materials

At Raytech we have the possibility of producing leaf springs from 0.01 mm to 5 mm thick out of strip or sheet material. Larger sizes are also possible (leaf springs with a length > 1 m).

Tolerances: Depending on thickness and design, from 0.02 +/-


A variety of materials are available, some of the most common:

  • Spring steel: C75 (1.1248), C100 (1.1274), …
  • Spring stainless steel: RVS301 (1.4310)
  • Copper alloys: phosphor bronze CuSn6 (2.1020), brass CuZn37 (2.0321) and beryllium copper BeCu (2.1247)

Other exotic materials are available on request, these are often in demand for their resistance to high temperatures or harsh environmental conditions.


We produce both small (prototypes possible) and large series of leaf springs. With our extensive machinery and our refined production methods, all kinds of shapes can be produced via laser processing. Almost all shapes are possible thanks to the flexibility that laser cutting entails. The thickness/width ratio of the design and the material determine the ultimate elasticity.

An elaborated hypothetical example about the possibilities can be found here:

  • Material: spring stainless steel
  • Thickness: 0.1mm
  • Tolerance: According to ISO 2768 Fine
  • Quality Assurance: 100% Burr Free
  • Order Quantity: 50.000
  • Delivery time: 2 weeks
  • First batch: 1 week
  • Tooling costs: None
Leaf springs worked out example

Leaf springs: what is it?

Leaf springs are simple mechanical springs based on the principle of bending, an elastic product that can be manufactured in the most diverse shapes. This spring action is caused by the reacting spring force produced by elastic deformation.

Leaf springs are one of the oldest mechanical spring variants and were already used in the Middle Ages.

One of the greatest characteristics of leaf springs is that they are made of spring band and/or strip material and their length is often many times greater than their thickness.

Leaf springs are usually laser cut or wire EDM machined in single pieces and for small series. The desired final shape can be created with the aid of a press brake. Then, if necessary, they undergo heat treatment and surface treatment.

For larger series of leaf springs, the punching/or punching method is usually used more. At Raytech, however, it is possible with specialized machines to offer comparative results and prices for large series via laser cutting.

Some advantages of laser cutting are:

  • Quick, easy and inexpensive design changes.
  • No limitation in material hardness.
  • Processing of very thin material possible: up to 0.01 mm.
  • Little material wastage: Due to the stress-free properties of laser cutting, parts can be cut extremely close to each other.
  • No or negligible burr: Less need for secondary operations to remove sharps and burrs, leading to an increase in overall productivity.

Leaf springs: applications

Due to the wide variety of parts, many industries use leaf springs for the most diverse applications.

Industries such as automotive, mechanical engineering, aerospace and applications such as household appliances, precision machinery, etc.

However, leaf springs can come in many different shapes and sizes for other uses as well. In small versions, they rather act as elastic hinges in precision mechanisms.

Think, for example, of current conduction and switches in precision mechanical and electrical equipment such as coffee machines and printers/copiers, weapon clips, battery springs, clamping mechanisms for spotlights and ventilation systems, etc.

As you can see, the possibilities are endless.

Leaf springs Raytech