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High-strength steels with good weldability 

If your components have to be of high strength and have excellent welding properties, Steeltec can supply the steels that meet your needs.

ETG® 25 – a high-strength special steel for high-quality welded joints

Despite its high strength, ETG® 25 shows good weldability. However, it is important to note that depending on the welding conditions and the filler metals used, there may be a reduction in strength and a degree of hardening within the welded joint and in the heat-affected zone. Due to the chemical composition of ETG® 25, any hardening is relatively minor and can be eliminated by tempering at 400–450 °C.

Steeltec’s ETG® 88 / 100 steels are less well suited to welding, but can be welded using austenitic electrodes, though a significant reduction in strength is to be expected. The ultimate tensile strength of the welded joint will depend on the quality of the weld and the physical properties of the filler and parent metals To avoid failure, we recommend that test welds are carried out before the final weld operation is performed. The best results are achieved with tungsten inert gas (TIG) welding.

  • Welding process: Tungsten inert gas
  • Filler metal: X15CrNiMn 18-8 (1.4370)
  • Preheating temperature: 300 °C
  • Tensile strength of welded joint: 490–670 N/mm2

ETG® 88 / 100 steels are not suitable for laser welding.

Rolled steels with good welding properties

For the best welding results, the CO2 content in the steel should be kept as low as possible and Steeltec adjusts the chemical composition accordingly. Weldability is a crucial property for chain steels and engineering steels, but it is also important in other applications, such as manufacturing gabions and crates from steel wire. Rolled steels from Steeltec can be welded using a variety of welding methods.

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Thanks to our deep understanding along the entire value chain, we can tailor our production precisely to your material requirements, thus contributing to your market success.

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Quenched and tempered steel Unalloyed quenched and tempered steel with lead
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ETG 88 High strength special steel
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HSX 130 High strength special steel
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Will the part or component be machined?

Around 85% of the costs in parts manufacturing are attributable to process costs. It is therefore worthwhile to optimize these costs with the targeted use of materials. Steeltec free-cutting steels are optimized for machining. Steeltec has also developed high-strength special products with outstanding machining properties. Short chip breaking, longer tool life and high uniformity across batches open up new possibilities in the design of manufacturing processes.

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Will the part or component be subjected to particular large stresses?

Materials for highly stressed parts must not only be outstandingly machinable, but also withstand high loads. A typical load - for hydraulic components, for example - is dynamic stress. To withstand it, users need a steel with a good ratio of strength and toughness.

More about static and dynamic loading

Will the part or component be processed asymmetrically?  

High dimensional stability and uniform machining behavior are decisive for an economical and plannable manufacturing process. The manufacturing costs per part are decisive, especially in high-volume production. Our low-distortion steels are designed to meet specified geometries and tolerances and minimize financial risk.

More about low-distortion steels

Will the part or component be subject to a cold-forming process?

The required properties - for example in terms of machinability, cold formability or weldability - can be precisely adjusted to customer specifications during the process. Thanks to very good cold forming properties, steels are formed into components, e.g. fasteners, by cold forming. Depending on the application requirements, they exhibit high strength and high durability. To achieve this, the materials must combine high initial strength with good formability. Special steels from Steeltec enable efficient and resource-saving production.

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