The tension spring is probably one of the best-known spring model and in many cases it is based on a standard DIN-program. Standard DIN tension springs are available from stock and can easily be ordered online, from our web shop. Please note: all standard extension springs delivered from stock are fitted with a closed “German loop end”.
Our tension springs are crafted to provide specific forces when stretched to particular lengths. They range in size from 0.03 to 22 millimeters in diameter for static and dynamic loads.
Custom sizes and designs are available upon request.
Tension springs are typically made from spring steel (Class C 1.1200, EN 10270-1-SH) or INOX 302 (1.4310, EN 10270-3-SH), with other materials available upon consultation.
| Material | Number | Temperature range |
| Koolstofstaal (C75, C85, C100) | 1.1200 / 1.1248 / 1.1269 / 1.1274 | [Temp -40°C up to +120°C] |
| Inox (301, 316, 17-7 PH) | 1.4310 / 1.4401 / 1.4568 | [Temp -150°C up to +250°C] |
| Inconel (X750, 718, 625, 600) | 2.4669 / 2.4668 / 2.4856 / 2.4816 | [Temp -200°C up to +550°C] |
| Hastelloy (C4, C276) | 2.4610 / 2.4819 | [Temp -100°C up to +500°C] |
| MP35N | Body implantable | [Temp -200°C up to +320°C] |
| Beryllium copper | 2.1247 | [Temp -190°C up to +160°C] |
| Phosphor bronze | 2.1020 | [Temp -190°C up to +80°C] |
| Brass | 2.0321 | [Temp -190°C up to +120°C] |
As an alternative for expensive material, often the wire/spring is made suitable for an application by use of a surface treatment. The most widely used surface treatments are: galvanising, phosphating, nickelling, chroming, powder-coating, tinning and silvering/gilding. Alcomex always carries out these treatments in consultation with specialised partners, in order to guarantee the quality of our spring products and solutions.
We use advanced technology and quality control for your spring needs, including testing, engraving, labeling and packaging.
Our efficient production and modern machinery enable us to quickly deliver custom springs and small series at competitive prices.
Our engineers provide expert advice and customized solutions, including technical calculations, 3D testing, prototyping and product optimization.
We are committed to sustainable production practices and ensure that our processes are environmentally friendly.
Ready to find, calculate, or design the tension springs for your project?
