Material Selection for CNC-Machining

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Wide range of different materials for CNC machining:

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Many Materials online – and all others on request

The selection of the right material can be decisive for the success or failure of an engineering design. At the same time, the variety of available materials is hard to keep track of. To help you select the right materials for your turned and milled parts, we have compiled an overview of common materials below.

At InstaWerk, we have decided to offer common materials online and to reduce the variety. This allows us to offer the best conditions for widely available materials, while at the same time responding to special material requirements via individual inquiry options.


Aluminum – Steels – Titanium – Plastics

Die Oberfläche von Aluminium nach dem Fräsen

Aluminium Alloys

All other aluminium alloys available on request.

AlMg4,5Mn – EN AW-5083 (Peraluminium) – 3.3547

Density 2.8 kg/dm³

  • Resistant to oxidation and corrosion
  • Well suited for room temperature use and lower temperatures
  • Well weldable
  • Less suitable for higher temperatures
  • Lower strength compared to other aluminum alloys
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AlMgSi1 – EN AW-6082 (Anticorodal) – 3.2315

Density 2.8 kg/dm³

  • Very good resistance to corrosion
  • High thermal conductivity
  • Very good weldability
  • Strength properties superior to AW-5083
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AlZnMgCu1,5 – EN AW-7075 (Ergal) – 3.4365

Density 2.8 kg/dm³

  • Compared to other aluminum alloys, AW-7075 shows very high strength when hardened.
  • Used for structurally loaded components that do not yet require the strength of steels
  • Very good polishability and therefore popular for tools
  • Caution: From approx. 80mm thickness, the strength and hardness decreases!
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AlMg1SiCu – EN AW-6061 (Peraluminium) – 3.3211

Density 2.8 kg/dm³

  • Very good machinability and thus cost-effective in turning and milling part machining
  • Good corrosion resistance and medium strength (yield strength of approx. 240 N/mm² in the T6 condition)
  • Well weldable
  • Lower strength compared to EN AW 7075
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Gebürstete Oberfläche eines Edelstahlteils

Steel and Stainless Steel Alloys
All other alloys are available on request.

Steel A36 – S235JR – St 37-2 – 1.0038

Density 7.9 kg/dm3

  • S235JR is an unalloyed structural steel used for structural parts according to its mechanical properties.
  • Medium case hardenability
  • Good weldability
  • High strength with minimum yield strength of 235 N/mm².
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Steel AISI 1024 – S355J2+N – ST 52-3 – 1.0570

Density 7.9 kg/dm3

  • S355J2 is an unalloyed structural steel used for structural parts (e.g. in mechanical engineering) in accordance with its somewhat increased properties.
  • Good machinability
  • High strength with minimum yield strength of 355 N/mm² for thicknesses below 16mm.
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Steel 1045 C45 Steel- AISI – 1.0503

Density 7.9 kg/dm3

  • Unalloyed quenched and tempered steel for subsequent hardening and tempering
  • High strength and wear resistance with high toughness
  • Due to the high carbon content, weldable only under consideration of precautionary measures
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Steel AISI 5115 – 16MnCr5 – – EC80 – 1.7131

Density 7.8 kg/dm3

  • 16MnCr5 is a chromium-manganese alloy case-hardening steel
  • High wear resistance and high toughness, thus particularly suitable for components subject to wear.
  • Etchable, polishable, nitrideable, weldable, case-hardenable
  • Well suited for highly stressed components used in automotive and transmission manufacturing as well as in general mechanical engineering.
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X5CrNi18-10 – Stainless Steel V2A – AISI 304 – 1.4301

Density 7.9 kg/dm3

  • Weldable and polishable
  • High corrosion and chemical resistance (acids, salt water possibly critical)
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X2CrNiMo17-12-2 – Stainless Steel V4A – AISI 316 – 1.4401

Density 7.9 kg/dm3

  • Weldable and polishable
  • Even higher resistance to corrosion and chemicals
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Tooling Steel P20 40CrMnNiMo8-6-4 – MCMS – 1.2312

Density 7.8 kg/dm3

  • The tool steel 40CrMnNiMo8-6-4 is particularly suitable for tools with medium loads, such as those used in compoiste production, thermoforming or other plastic manufacturing processes.
  • Good machinability
  • High strength
  • Very high dimensional stability
  • Moderate polishability
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Titan-Oberfläche

Titanium Alloys available Online
All other alloys are available on request.

Titanium Grad 2 “Ti 2” – 3.7035

Density 4.5 kg/dm³

  • Unalloyed titanium (“pure titanium”) with good corrosion resistance
  • Good mechanical properties
  • High notched impact strength
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Kunststoff-Frästeile

Available plastics in the online configurator
All other polymers are available on request.

Polytetrafluorethylene (PTFE) – Teflon®

Density 2.2 kg/dm³

  • Barely adherent surface
  • Excellent gliding properties
  • Excellent electrical properties
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Polyoxymethylen (POM-C) – Delrin®

Density 1.4 kg/dm³

  • High strength
  • High hardness
  • Superior surface finish
  • Good gliding properties
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Polyetheretherketone (PEEK)

Density 1.3 kg/dm³

  • High performance polyer
  • Excellent chemical resistance
  • Very high operating temperatures above 200°C
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CNC-Manufacturing

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The fast online ordering via our online calculator is suitable for all those who want to have turned parts and milled parts manufactured quickly, conveniently and cost-effectively.

 1. Upload CAD files

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2. Configure parts

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3. Order. Done.

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If you have larger quantities, high tolerance requirements or need special materials, you are better off with an individual inquiry. Simply upload model data here.

  • Materials according to your specification
  • Manufacturing according to your tolerance specifications and according to drawing
  • Delivery from 24h.

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