Hocut 4260 is an advanced technology product and part of the Quaker Houghton Hocut 4000 series technology family. We expect the introduction of this high performance and compliant product to change the face of the metalworking fluid market and replace the already globally best-selling metalworking fluid on the market today – Hocut 795 series.

We are proud to be able to offer such a product which will ensure compliance and cost effectiveness for years to come.

Water-soluble metal-working fluid

HOCUT 4260 is an advanced, boron-free and formaldehyde-free emulsion technology giving very long sump-life. A special lubricity additive package gives greatly enhanced machining performance and extends tool life compared to conventional products. HOCUT 4260 is particularly effective on machining aerospace airframe structural components in aluminium alloys including titanium and carbon-fibre composites.


  • Versatile: Can process various materials, ranging from carbon fibre composites, to aero aluminium alloys as well as ferrous alloys
  • High detergency: Leaves parts and machine tools clean and free from residues.
  • Extended tool life: Thanks to its unique antiwear, the additive package tool wear is minimized, saving tooling costs
  • Very long sump-life: New HOCUT 4000 series emulsion technology extends intervals between clean outs
  • Very stable emulsion: Fewer additive treatments and lower usage costs
  • Inhibits aluminium staining: Can be used on sensitive aerospace alloys
  • Very low foaming: Ideal for the highest speeds and pressures in soft to hard water (10°dH – 70°dH)
  • Excellent EHS profile: Boron, formaldehyde, chlorine and phenol-free. Contains only TRGS 611 approved amines

HOCUT 4260 is multi-metal compatible and is recommended for a range of machining applications, including high speed milling and turning on a wide range of materials including aerospace aluminium alloys, composites, ferrous alloys, titanium and inconel.

The product is suitable for both centralised systems and single sump machines while the advanced boron-free technology extends emulsion life without the need for regular biocide treatments.

The versatile formulation is designed to give low foam and no soaps in soft to hard water (10°dH – 70 °dH cumulated hardness).

Its operator-friendly EHS profile and its non-staining & corrosion-free properties make HOCUT 4260 particularly efficient on aero structural airframes.


This product holds the following approvals and conformities:

  • Boeing BAC 5008 cat. 5 & 6 – Meets conformance requirements
  • Bombardier BAMS 569-001: A, C & D. ASTM D 3946 and Storage stability – Meets conformance requirements
  • Dassault – Approved
  • Airbus AIMS 12-10-001 – Table A7.1 Cleaning tests,80T-30-4010 – ASTM F483 and 80T-30-4010 – ASTM F1110 – Complies with requirements
  • SNECMA – PR 6300 – Hot corrosion with Aluminium, nickel and titanium aluminium steels – Meets conformance requirements

Health & Safety

REACh compliant. Safety data sheets are available in accordance with Regulations (EC) No 1907/2006 Annex II and (EC) No 1272/2008.

HOCUT 4260 displays an excellent EHS profile:

  • HOCUT 4260 is only rated Irritant (no ADR expected)
  • HOCUT 4260 has reduced labelling with an exclamation mark
Chemical & Physical Properties
Chemical / Physical Property HOCUT 4260
Appearance Pale yellow
Emulsion aspect Microemulsion, translucent
pH in use 9,5
Density @ (20 °C) 0,986 g/cm3
Refractometric factor 1,5
Acid split factor 2,1
Pack size available 20 L / 209 L / 1000 L IBC
Lab Results Summary

New HOCUT 4260 demonstrated excellent resistance to staining and galvanic corrosion of Al alloys (not only fresh solution but also on long test: ageing & bacterial attacks)

Improved performances on Aluminium alloys

  • Good biostability, typical of HOCUT 4000 series
  • Compatible with soft to hard water (10-40°dH for mounting and up to 70dH build up)
  • Exhibits excellent lubricity characteristics

Compatible with various materials

  • Aero alu (no staining or no galvanic corrosion)
  • Ferrous materials (corrosion break even 4%)
  • Carbon fibers (very good graphite dispersion)

Very good EHS profile, anticipating future regulations

  • Free of 2nd amine (as per TRGS 611),
  • No bactericide (Boron free, FRB-free)
  • User-friendly

Related Product

Water soluble coolants are complemented by our full range of high quality, speciality production fluids including energy saving wash chemicals , low misting neat cutting oils, non- VOC rust preventives and long life heat treatment fluids. QH FLUIDCARE™ services complete our value added portfolio with a range of expert services and equipment to help reduce costs and improve productivity. For more information, please contact your local Quaker Houghton representative.


Please refer to section 7 of Safety Data Sheets for handling and storage information, including product shelf life. Product should be stored under cover in clean, dry conditions and protected from frost. Recommended storage temperature is usually between 5°C and 40°C unless otherwise specified. Use stock in delivery rotation.

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