Wire Bent Parts

Bent wire components are required in a wide range of industries, including medical technology, the furniture industry, and precision instrument manufacturing. Our key strength lies in processing wire gauges up to 10.00 mm.

We manufacture bent wire parts and insert wires using carbon and stainless spring steel wire, as well as low-alloy steel grades. Other materials are available upon request. Whether it’s bent wire parts, bent tube parts, or insert wires, we offer the optimal manufacturing process tailored to your specific needs.

Individual parts are produced directly in our facility.
For small series, we utilize semi-automatic production to combine the flexibility of manual work with the efficiency of larger-scale production.
For large series, we rely on fully automated production processes.

Manufacturing takes place on modern CNC-controlled single- and dual-head bending centers with transfer systems and long feed lengths, or on machining centers with up to 28 CNC axes. We process spring steels up to 4.00 mm in wire diameter and materials with tensile strengths ≤ 600 N/mm² up to 8.00 mm. For special geometries or wire diameters beyond our CNC machines’ capacity, we use hydraulic and mechanical presses as well as dedicated bending units. All required tools and equipment are designed and built in our in-house tool shop.

Materials

Surface Treatment

Data Formats

Steel wire and strip steel used for the production of technical springs are essential across virtually all areas of technology – especially in electrical engineering, telecommunications, medical devices, and the automotive industry. The choice of material grade depends on the specific load requirements and the operating environment of the spring. The following is a representative selection of the materials we primarily process.

Thanks to our extensive raw material inventory, we are usually able to fulfill customer requests at short notice.

Designation	Material Description	Load, Properties, Application Purpose	Operating Temperature
DIN EN 10270-1 SM	Spring steel	Moderate static or occasional dynamic stress, compression, torsion, or tension springs, bent parts	max. 80°
DIN EN 10270-1 SH	Spring steel	High static or low dynamic stress, compression, torsion, or tension springs, bent parts	max. 80°
DIN EN 10270-1 DH	Spring steel	High static or moderate dynamic stress, compression, torsion, shaped or tension springs, bent parts	max. 80°
DIN EN 10270-2 FDSiCr	Tempered spring steel	High static stress, compression and leg springs	max. 130°
DIN EN 10270-2 TDSiCr	Tempered spring steel	High static stress, moderate fatigue strength, compression and leg springs	max. 130°
DIN EN 10270-2 VDSiCr	Tempered spring steel	Highly stressed, both statically and dynamically; high fatigue strength; compression and leg springs	max. 130°
DIN EN 10270-3 1.4310	(X10CrNi18-8)	Stainless material suitable for use at higher temperatures	max. 250°
DIN EN 10270-3 1.4401	(X5CrNiMo17-12-2)	Non-magnetic, more corrosion-resistant than 1.4310	max. 250°
DIN EN 10270-3 1.4568	(X7CrNiAl17-7)	Less corrosion-resistant than 1.4310, highly loadable	max. 300°
DIN EN 10270-3 1.4571	(X6CrNiMoTi17-12-2)	Seawater-resistant	max. 300°
DIN EN 1654 CuSn	Bronze	Non-magnetic, electrically conductive
DIN EN 1654 CuZn	Brass	Non-magnetic
DIN EN 1654 CuNiZn	Nickel silver	Corrosion-resistant and electrically conductive
2.4610 Hastelloy C-4	(NiMo16Cr16Ti)	Extremely corrosion-resistant; high service temperature; seawater-resistant	-200° to max. +400°
2.4669 Inconel X-750	(NiCr15Fe7Ti2Al)	Non-magnetic; high corrosion resistance; high service temperature	max. 370°
DIN EN 10016-2 C9D	Wire	Bent parts
DIN EN 10016-2 C10D	Wire	Bent parts

Springs are expected to relax at high temperatures. Other materials for special applications are available upon request.

The above information is for guidance only and is not intended to be exhaustive.

Surface coatings provide essential corrosion protection for bent parts, especially when non-corrosion-resistant materials are used due to technical or cost-related reasons. When stainless spring wires are used, additional corrosion protection is typically not required. Surface treatments can also be applied to enhance the functional or visual properties of the parts.

Below is a selection of the surface treatments we offer.
If the treatment you need is not listed, feel free to contact our specialists for bent wire parts.

Surface Treatment	Note
Zinc plating	Electrolytic zinc plating is the most commonly used and most cost-effective corrosion protection method for technical springs.
Zinc plating with passivation	Electrolytic zinc plating with subsequent passivation is a cost-effective method to achieve good corrosion protection for technical springs.
Nickel plating	Nickel plating is a visual surface treatment that offers favorable sliding properties along with high corrosion resistance.
Chrome plating	Chrome-plated parts are decorative and have good heat and corrosion resistance.
Pickling	Pickling removes chemically bonded impurities.
Copper plating	Copper plating is used as a base for later surface coatings, but it is also used for color marking of springs.
Bluing (black oxide)	A layer of iron oxide forms on the treated parts, creating a deep black surface. Oil treatment provides corrosion protection.
Phosphating	Phosphating serves as corrosion protection and as an adhesion base for paints and coatings, and as preparation for KTL coating.
Zinc flake coating	This is an environmentally friendly coating system that meets increasing corrosion protection requirements. These coatings are chromium-free and completely free of heavy metals. They also offer high temperature resistance and minimal hydrogen embrittlement.
KTL coating (cathodic dip painting)	KTL is a dip-coating process that meets the highest quality standards for corrosion protection and protection against under-rusting.
Powder coating	Powder coating is a suitable process when a scratch- and impact-resistant surface with high corrosion protection is required.
Gleitmo	Gleitmo is an air-drying lubricating coating. The active component is specially treated PTFE. Usable temperature range: -180°C to +250°C, enables low friction values, non-greasy and non-dirty, suitable for food contact.
Tin plating	The main advantage of tin plating lies in its good solderability.
Silver and Gold	Silver and gold provide high-gloss, high-quality surfaces for decorative and technical applications.
Shot peening	Shot peening increases the dynamic service life of technical springs but offers little to no corrosion protection.
Trowalizing / Vibratory finishing	This surface treatment removes burrs or sharp edges from stamped or cut parts, but offers little to no corrosion protection.

We do not describe bent wire parts using formula symbols. Instead, we extract all relevant data directly from your sketches, samples, or CAD files (DXF, DWG, STP, IGS).

If desired, we are also happy to handle the design implementation for you.