Alocrom 1200

Amfin has the ability to perform Alocrom 1200 conversion coatings with some of the largest process tanks in the UK.  Our state-of-the-art facility has been designed to maximise batch quanities and production turnaround, achieve the highest quality, whilst driving competitive prices.

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Specialist ALOCROM 1200 conversion coating services

Alocrom 1200 is a hexavalent conversion coating commonly used across the engineering world, often referred to as Alodine 1200 outside the UK or Chromate. Its purpose is to increase the corrosion protection of Aluminium and Aluminium alloys. 

The process is performed by immersion or swab and can range in colour from a light golden iridescence to brown, depending on immersion time as per specification and application of finished component.  

Alocrom 1200 Tank Dimensions (mm)

Corrosion resistance

Heavier applications of Alocrom 1200 can be used for components where corrosion protection is the main objective.

  • Provides good adhesion for paint. 
  • Has a deeper gold to brown colour. 
  • Meets 168 hours salt spray corrosion test requirements 
  • Complies to global standard & MIL-DTL-5541 Type 1 Class 1A 

Alocrom 1200 for Low Electrical Resistance 

Lighter applications of Alocrom 1200 can improve corrosion protection of Aluminium components  

Whilst still allowing electrical conduction (commonly used on bonding points throughout the aerospace industry).  

  • Complies with MIL-DTL-5541 Type 1 Class 3. 

Get a ALOCROM 1200 conversion coating quote

Contact us today for a free quote and find out how Amfin can assist at every stage of production.

  • Over 40 finishing operations all in 1 facility enabling us to maximise efficiency, reduce costs and minimise lead times.
  • Established suite of accreditations to finish, test and inspect a wide range of components from many areas of precision manufacturing.
  • Trusted by manufacturers in Aerospace, Defence, Rail and Automotive industries.
  • Experienced, dedicated team with over 75 years' experience working in the industry, providing bespoke services and products to 1st tier engineering companies.

Amfin Approvals for Alocrom 1200 

  • MIL-DTL-5541
  • AIPS 02-05-001
  • AMS 03-18
  • CCT_00608
  • BS EN 2437
  • PR-1010
  • DS 26.00 D6, D6A, D6B (DS 16.52)
  • 58C411
  • RPS 436
  • & Many more. 

Amfin holds many customer accreditations for Alocrom 1200.

Get in touch if you require a specific specification to see if we can help you. 


Alocrom 1200 is on the REACH regulations list and has a sunset date.  

Amfin offers Trivalent chrome (vi) free equivalents to Alocrom 1200.

Find out about Surtec 650

Find out more about UK REACH REGULATIONS (



If you have any further questions on conversion coatings, contact us on:
+44 (0) 1455 637284
Or email:
[email protected]