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Distortion-free surface hardening for highly stressed components

We guarantee plasma nitriding competence since 1988. We apply our quality standards from the clamping technology to our hardening process.

Certified according to DIN EN ISO 9001:2015

Logistics plasma nitriding and additional services


Spreitzer offers the trend-setting plasma nitriding technology in the ionic process as a service for you. This surface hardening process in a vacuum using ionized and reactive gases, is particularly characterized by low distortion, wear resistance and dimensional stability. It is mainly used for warpage-sensitive and highly stressed components.

Individual support

Customer-oriented thinking and acting is always in the foreground at Spreitzer. Each customer is served individually. We see ourselves as a service provider and the satisfaction of our customers is our top priority. We are specialist in this field and are glad to share our expertise with you on any plasma nitriding issue.

+ Strengths:

  • Our core competence lies in the fast and uncomplicated processing of small quantities, spare parts and sample parts.
  • Your high-quality components are in good hands with us.

Plasma nitriding by the ionic process

The main advantages of plasma nitriding by the ionic process include the improvement of friction and sliding properties, the Creation of corrosion-resistant coatings and the great low warpage. Generally, only finish-machined components are plasma-nitrided which, after this thermochemical heat treatment, require only minor mechanical manufacturing operation such as grinding. This is for the metalworking industry an important economic and technical point of view.

All common steel, cast iron and sintered materials can be used. plasmanitrated. Suitable are unalloyed, as well as low and high alloy steels. We treat all workpieces, also long or geometrically complicated shapes and parts.


  • low treatment temperature at 350°C to 600°C
  • Dimensional stability and low warpage
  • High hardness penetration
  • High compressive strength, increased torsional strength
  • Increased service life even under extreme load
  • increased fatigue strength
  • lower roughness and clean surfaces
  • Improvement of sliding, friction and emergency running properties
  • no pitting, low-noise operation (for gear parts)
  • increased wear resistance
  • increased corrosion resistance
  • Treatment of certain workpiece surfaces (partial hardening) possible
  • Environmental friendliness

The main industries:

  • Tool and mold making
  • Mechanical engineering & plant construction
  • Jig and fixture construction
  • Automotive supply industry
  • Automation and plant engineering

The main areas of application:

  • Piston
  • Spindles and gears
  • Gear parts
  • Guides and guide rails
  • Hydraulic components
  • Tools and dies
Workpieces during plasma nitriding
Workpieces during plasma nitriding


1. necessary data for your order:

  • Steel designation / material number
  • Indication of possible pre-treatment of the parts
  • Desired nitriding hardness depth (NHT) in mm
  • Desired surface hardness in HV1
  • Thickness of the compound layer in μm (optional)
  • Possible footprint; in case of partial treatment, the required hardness ranges shall be marked. Areas that are not to be cured can be covered.

2. part preparation for optimal treatment

  • The parts must be delivered metallically bright, without paint, rust and scale.

3. running time

  • For our customers we have two plants in our house as well as further plants outside our house.
Drills for plasma nitriding


Titanium nitride implantation of cutting tools

This process is used for surface hardening of HSS tools. The treatment is carried out in a special form during the normal hardening process within our plasma nitriding facilities.

  • Increased surface hardness
  • Increased surface density, low coefficient of friction
  • No geometric and dimensional changes to the mold
  • Higher feed per minute (up to 100%)
  • Regrinding possible
  • Cost savings of up to 75% compared to coating processes

Attachment 1

  • Inner dimension/filling dimension: Ø 450 x 600 mm
  • Filling: 4 x weekly
  • Standard runtime: 36 hours

Enclosure 2

  • Inner dimension/filling dimension: Ø 650 x 1000 mm
  • Filling: 3 x weekly
  • Standard runtime: 60 hours
Informationtable about plasma nitriding

Plant external

  • Inner dimension/filling dimension: Ø 1200 x 2500 mm
  • Filling: 3 x weekly
  • Standard runtime: 60 hours
Workpieces during plasma nitriding
Man with a box in his hand

4. additional services

  • Covering work for partial treatment
  • Hardness log for your complete documentation
  • Sandblasting of your workpieces after the hardening process
  • HM coating of clamping surfaces on clamping jaws and collets

5. prices

Prices for our plasma nitriding services are available upon request by e-mail or fax. We will be happy to provide you with a non-binding offer.

By the way:
New customers receive the first order as a trial treatment up to 10 kg delivery weight free of charge. Test our performance. Contact us.

6. logistics (pick-up and delivery service)

On request, we organize the collection and delivery of your goods by our reliable logistics partners.

We provide regular customers with one of our transport boxes. For details please visit
or give us a call.

Wage treatment

Enquiry surface treatment

Nitriding - Nitriding hardening - Carbonitriding Please contact us. For current information on the process and the material table, please refer to our PDF brochure.

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By using our products and services, our customers increase the productivity of their production by up to 100% and at the same time reduce their production costs to a large extent.