Phosphating · Process-engineered chemistry

UNIKOAT LT450-RTZinc Phosphate Room Temp (Low Coat)

Fine Crystal Paint Anchor Without Heating Costs

2–5 g/m²Ambient TempFine CrystalPaint Optimised

01 / Product brief

Fine Crystal Paint Anchor Without Heating Costs

Room-temperature zinc phosphating producing a low coating weight of 2–5 g/m² with fine, dense crystal structure — optimised for paint adhesion rather than heavy corrosion protection. Fine crystal provides maximum paint anchor surface area while controlling total coating thickness on tight-tolerance parts.

Fine crystal structure at 2–5 g/m² coating weight provides the ideal paint bonding surface without the coating weight variation of heavier zinc systems. Ambient process reduces energy cost while maintaining OEM paint adhesion performance.

02 / Performance

Key process advantages

Product-specific outcomes for production quality, operating control and line performance.

012–5 g/m²

Fine 2–5 g/m² crystal

Maximum paint anchor area without excessive coating thickness

02Ambient Temp

No heating infrastructure

Ambient temperature operation reduces energy cost 40% vs. hot bath

03Fine Crystal

Tight-tolerance safe

Low coating weight preserves dimensional accuracy on precision parts

03 / Technical data

Recommended operating window

Final operating conditions should be validated against substrate condition, line configuration and the specified finishing system.

[Zn₃(PO₄)₂ · AMBIENT · FINE CRYSTAL]

Steel · Precision Stampings · Thin-Wall Sections · Pre-Paint Applications

ParameterRecommended value
Operating Temp25–35°C
Coating Weight2–5 g/m²
Crystal StructureFine Dense
pH Range2.8–3.5
Paint AdhesionOptimized

Values are typical guidance. MacroCoats process engineers establish the final bath specification after line trials.

04 / Process position

Where it works in the line

Applied at Stage 5 (Phosphate) at ambient temperature — fine crystal structure optimised for paint adhesion without the energy cost of a heated bath.

  1. 01

    Degrease

    Process stage

  2. 02

    Rinse

    Process stage

  3. 03

    De-rust

    Process stage

  4. 04

    Rinse

    Process stage

  5. 05

    Condition

    Process stage

  6. 06

    Phosphate

    Applied at Stage 5 (Phosphate) at ambient temperature — fine crystal structure optimised for paint adhesion without the energy cost of a heated bath.

  7. 07

    Passivate

    Process stage

  8. 08

    Rinse

    Process stage

  9. 09

    Dry

    Process stage

05 / Applications

Specified for real production demands

Typical applications and substrate conditions for UNIKOAT LT450-RT.

Application 01

Pre-paint treatment for powder coat or liquid paint on steel components

  • Steel
Application 02

Components with tight dimensional tolerance that limits coating thickness

  • Precision Stampings
Application 03

Thin-wall steel stampings and formed sections before painting

  • Thin-Wall Sections
Application 04

Automotive sub-assembly parts before painting at ambient temperature

  • Pre-Paint Applications

Technical support

Validate UNIKOAT LT450-RT on your line.

Share your substrate, current bath, throughput and finishing system. Our process team will recommend a practical trial window.

Get in Touch

Let's optimise your surface treatment process.

Whether you're scaling a phosphating line, addressing inconsistency across plants, or moving to chromium-free systems — our team is ready to engineer chemistry around your process.