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  • What is Y-coat
  • YUKEN's advantage
  • New release information
  • Variation
  • Case studies
  • Our techinical skill

Products FAQ

Inquiry

For inquiry about Y-coat, please contact the below plant/offices (Click to open windows)

Takatana Plant
(Sales, R&D, Production)

Tokyo Office (Sales)

Kita-Kanto Office (Sales)

Contact us via e-mail

Variation of Products

Y-coat Variations

We have 8 different coating films and a multi-layer treatment (Type K + Y-coat) to meet market needs.

Intended Use : Cold Forging ・Pressing
Film Thickness : 2 μm
Hardness : 2,200 Hv
Oxidizing Temperature : 400 ℃

Intended Use : Cold Forging ・ Pressing
Film Thickness : 2 μm
Hardness : 2,800 Hv
Oxidizing Temperature : 300 ℃

Intended Use : Cold Forging ・ Pressing ・ Warm and Hot Forging ・ Molding
Film Thickness : 5 μm
Hardness : 1,800 Hv
Oxidizing Temperature : 600 ℃

Intended Use : Warm and Hot Forging ・ Molding
Film Thickness : 7 μm
Hardness : 2,200 Hv
Oxidizing Temperature : 800 ℃

Intended Use : Cold Forging ・ Pressing
Film Thickness : 3 μm
Hardness : 3,300 Hv
Oxidizing Temperature : 400 ℃

Intended Use : Pressing
Film Thickness : 3 μm
Hardness : 3,500 Hv
Oxidizing Temperature : 400 ℃

Intended Use : Cold Forging ・Pressing
Film Thickness : 3 μm
Hardness : 3,500 Hv
Oxidizing Temperature : 1,200 ℃

Intended Use : Plastics Molding
Film Thickness : 1 μm
Hardness : 2,500 Hv
Oxidizing Temperature : 500 ℃ 

Type K + Y-coat process

This is the multi-layer process to harden base material (Type K treatment) and Y-coat on top.

The synergistic effects of "substrate hardening" and "Y-coat" provide better performance compared to existing ion plating.

[Merits]
・Improved anti-abrasion and anti-galling properties, softening resistance, and fatigue endurance
・Change in dimension is the same as with Y-coat process only

[Caution]
・There are some cases in which the hardened layer cannot easily spread out enough for materials such as stainless steel and cemented carbide.

The surface layer of the substrate gets hard enough to prevent different materials and burrs from penetrating into the layer.
Additionally, cracking of the film is minimized since shape change of the substrate is small enough and coating adhesion is good.

Y-coat film types and applications

Film type Film type hardness heat resistance Cold temp High temp Die for resin
Forging Press Forging Press
Type N（TiN） 2μm Hv2,200 400℃ ○ ○ × × －
Type CN（TiCN） 2μm Hv2,800 300℃ ○ ○ × × ○
Type R（CrN） 5μm Hv1,800 600℃ ○ ○ ○ ○ －
Type C 7μm Hv2,200 800℃ ○ ○ ○ ○ －
Type V 3μm Hv3,300 400℃ ○ ○ × × －
Type G 3μm Hv3,500 400℃ ○ ○ － － －
Type AⅡ 3μm Hv3,500 1,200℃ ○ ○ － － －
Type BL 1μm Hv2,500 500℃ － － － － ○

* ○: Yes, ×: No, -: N/A

Above film thickness are on one side of the punch. Film thickness of the die top is double the shown thickness.Coating thickness of the die internal diameter [ID] depends on ID size & shape.

Freaquently asked questions

Frequently asked questions about our Y-coat process.

See FAQ

Inquiries of Our Company

For inquiry about Y-coat, please contact the below plant/offices.

Takatana Plant(Sales, R&D, Production)
Contact us via e-mail

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