Cryogenic processes

In order to convert the remaining austenite, which remains untransformed in the material after heat treatment, into martensite, it is necessary to cool the parts below the martensite finish temperature. This is almost a necessity, especially in high alloy materials.

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If this cooling process is done down to -110°C, it is called "sub-zero" or subzero.

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Musical instruments, knives, measuring instruments and implants become longer lasting with this process.

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benefits,

• If it is cooled to temperatures lower than -110°C, it is called cryogenic.

• By reducing residual austenite, dimensional stability of materials increases under operating conditions.

• There is a significant increase in abrasion and chipping resistance.

• It provides a 1-3 HRC hardness increase depending on the material type.

• It provides better adhesion in PVD thin film coatings with dimensional stability.

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Material groups on which it is applied,

• Cold work tool steels

  • 1.2379, 1.2990​

• High speed steels

  • 1.3343, 1.3207, 1.3243​

• Improved steels​

  • SAE 4140, ​50CrMo4

• Case hardening steels

  • SAE 8620, 18NiCrMo7-6, 16NiCr4​

• stainless steels

  • A-286​

• Aluminum alloys​

  • Copper aluminum alloys

  • Alloy 2024, Alloy 2017 ​

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