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S51

S51 thinner for 1K alkyd metal coatings

Clear, colourless thinner; the official page says nothing more. The 2025–2026 catalog and the «exterior metal materials» leaflet list S51 as the thinner for the 1K alkyd metal range: PTL30 DM clear converter and PPL30 DM enamel-converter (both 5 gloss), at 10–20 % (weight or volume not specified). Technocolor lists S51 for no other product; the 2K PU, acrylic and polyester wood systems use S50/S80 and the other thinners.

  • Thinning PTL30 DM clear metal converter, 10–20 %
  • Thinning PPL30 DM metal enamel-converter, 10–20 %

S51 is a component, not a base: proportions are set on the base material's page. No base in the catalog lists a ratio for S51 yet — see the table below.

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Answers are based on the S51 data and the products it mixes with.

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Mixing matrix

  • PTL30 DMThinner

    Spray (catalog icon read as conventional/pneumatic) on ferrous metal (cast iron, steel), 60–80 g/m².

    No hardener — 1K product (inferred: the catalog lists none). Start at 10 %; move towards 20 % if you get orange peel or the shop is cold.

  • PPL30 DMThinner

    Spray (catalog icon read as conventional/pneumatic) on steel structures, 60–80 g/m².

    Pigmented enamel — stir the settled pigment back in fully before thinning.

Percentages are per 100 parts of component A.

Characteristics

Solids
0recommended
Evaporation rate
not statedrecommended
Chemistry
solvent blend for alkyd (oil-modified) resins, probably aliphatic/aromatic hydrocarbonsrecommended
Viscosity effect
reduces viscosity of the coating to application valueofficial

Application

Conventional spray

Consumption
60–80 g/m²catalog
Nozzle
1.4–1.8recommended
Pressure · air
2.5–3.5recommended
Spray viscosity
18–25 s DIN4 at 20 °Crecommended

Technocolor lists only spray for these products; if brushing, keep thinning minimal (≤10 %). S51 is a sensible gun flush after alkyd materials (inference; Technocolor does not state it).

Process and compatibility

Substrate
ferrous metal: cast iron, steel, iron and other ferrous metalscatalog
Temperature and humidity
15–25 °C, RH ≤ 75 %; material and substrate at least 3 °C above dew pointrecommended
Don'ts
  • Do not substitute S51 for S50/S80 in 2K PU or acrylic systems — it is not listed for them
  • Do not thin past 20 % — film build and corrosion protection drop
  • Do not mix into waterborne products

Storage

Packaging
not publishedrecommended

Safety: Flammable liquid (an inference, not Technocolor data). Use with ventilation and keep it away from ignition sources. Wear gloves and a respirator with an A (organic vapour) filter.

Sources

Value tags: “official”, “dealer”, “catalog”, “schedule” are Technocolor data; “workshop” is from our own datasheets; “recommended” is our engineering estimate (hover to see the reasoning).

Not covered by the sources
  • Evaporation rate class (official page gives none)
  • Chemical composition / solvent type
  • Density, flash point, boiling range
  • Whether catalog/leaflet 10–20 % is by weight or by volume (stored as pct_unspecified)
  • Packaging / pack sizes
  • Shelf life and storage temperature
  • Not stocked by dealer t-colormarket.ru (search finds only CPS51; thinner category has no S51; PTL30/PPL30 not stocked either) — rechecked 2026-10-05
  • No TDS/SDS PDF found (web search budget exhausted; dealer searches on lakokraska31/woodonline/ndom31 had no S51 hits)
  • Not used in any official finishing schedule (information/technology)
  • PTL30 DM / PPL30 DM have no official product pages; their only source is the catalog