ArmorLiner vs HighLine 510 vs HighLine 610: Choosing the Right Polyurea

ArmorThane makes a lot of polyureas, and three of them cover most of the work that comes through a typical applicator's door: ArmorLiner, HighLine 510 and HighLine 610. They are all 100% solids, fast-set, high-pressure spray polyureas. The differences are in what each one was engineered to do best. Here is how the ArmorThane Tech Team sorts them.

The quick answer

• Bedliners, trailers, decks and mixed work: ArmorLiner.
• Moisture-prone concrete and steel, food and ag settings: HighLine 510.
• Cold-weather containment and geotextile liners: HighLine 610.
• Heavy abrasion and impact: step up to HighLine 510H.

Side-by-side comparison

ArmorLiner: the all-rounder

ArmorLiner is the centerpiece of ArmorThane's high-pressure ArmorLine series and, in ArmorThane's words, generally its most successful product. It bonds across the widest range of named substrates, stays flexible in the cold, and handles the scuffs, gouges and tears that bedliners and trailer floors see every day.

Choose it when your week is a mix of trucks, trailers, boats and small industrial jobs and you want one drum set on the rig. Plan on a UV topcoat such as UV ColorCoat where exterior color matters.

HighLine 510: the moisture-tolerant pure polyurea

HighLine 510 is a two-component pure polyurea designed to make the most of polyurea's natural moisture resistance. ArmorThane rates it for carbon or mild steel without a primer, with or without reinforcement in transitional areas, and for moderate to high temperature applications with excellent temperature stability.

It meets USDA and Canadian Agriculture criteria, which opens doors in food and ag facilities. Choose it for secondary containment, water features, sanitation structures and general industrial protection where damp conditions are part of the job.

HighLine 610: the cold-weather specialist

HighLine 610 is a later addition to the ArmorLine portfolio, developed specifically to support newer materials like geotextile fabrics. ArmorThane describes it as a pure polyurea with good resistance to cold break and a lower application temperature threshold than many polyureas. On containment work it forms a seamless liner with an optimized balance of flexibility and durability.

Cold-weather notes for 610 and beyond

A lower threshold gives you margin, not a free pass. When temperatures drop:

1. Condition the drums. Cold material thickens and throws off ratio. Use drum band heaters or heat blankets to bring both sides up to the TDS temperature before you spray.
2. Keep hoses hot. Run heated hose the full length and verify temperature at the gun, not just at the proportioner.
3. Respect the dew point. Keep the substrate at least 5°F above it. Frost and condensation on a liner or geotextile will kill adhesion.
4. Measure, do not guess. Carry a temperature and humidity gauge and an infrared thermometer, and log readings for every pass.
5. Confirm the limits. Check the current HighLine 610 TDS for its exact application range before you commit to a winter schedule.

Where HighLine 510H fits

If none of these three is tough enough, look at HighLine 510H. It is the harder, heavy industrial version of 510, with a TDS hardness of 55 ± 5 Shore D and 400% elongation, built for mining, power plants and structural steel.

The bottom line

Match the product to the threat. General wear across mixed substrates points to ArmorLiner. Moisture and ag or food settings point to HighLine 510. Cold and containment point to HighLine 610. All three, plus pigments, primers and topcoats, are in the coatings and chemicals collection, and proportioners, heated hoses and guns are in spray equipment. Still torn? Call the tech line at (417) 831-5090.