Ultra-Heavy-Duty Cleaning
Removes oils, grease and carbon soils
Built-In Corrosion Protection
Protects ferrous surfaces from flash rust
Up to 90 Days Protection
Extends indoor rust protection
Low Foam
Efficient spray and immersion cleaning
Zero VOC
Biodegradable, zero-VOC chemistry
About AquaKlean® STC-HT
AquaKlean® STC-HT is a highly alkaline, ultra-heavy-duty liquid cleaner engineered for ferrous-metal and stainless-steel cleaning where both aggressive soil removal and corrosion protection are required. Its low-foam chemistry removes grease, oils, chlorinated oils, fingerprints, drawing compounds, metalworking fluids, polishing and buffing compounds, inks, and stubborn carbonaceous deposits.
Built-in flash-rust inhibitors provide extended indoor corrosion protection for up to 90 days. AquaKlean® STC-HT also has significantly lower conductivity than many conventional highly alkaline cleaners, promoting faster rinsing and spot-free surfaces while reducing residual cleaner left on processed parts.
For applications requiring maximum temporary corrosion protection, AquaKlean® STC-HT may also be used in select no-rinse processes, allowing the protective chemistry to remain on the surface without spotting. Its broad operating-temperature range and absence of a cloud point help maintain clear bath conditions for easier visual monitoring of soil loading.
Typical Applications
Heavy-Duty Ferrous Parts Cleaning
Steel & Stainless Steel Components
Immersion & Tank Cleaning
No-Rinse Corrosion Protection
Precision Cleaning & Rust Prevention
Carbon & Heavy Soil Removal
Ultra-Heavy-Duty Cleaning
Removes oils, grease and carbon soils
Built-In Corrosion Protection
Protects ferrous surfaces from flash rust
Up to 90 Days Protection
Extends indoor rust protection
Low Foam
Efficient spray and immersion cleaning
Zero VOC
Biodegradable, zero-VOC chemistry
Typical Properties
| Property | AquaKlean® STC-HT |
|---|---|
| Chemical Form | Highly Alkaline Liquid Cleaner |
| Density at 20°C (68°F), g/ml (lb/gal) | 1.330 (11.10) |
| pH, 100.0% | 13.5 |
| pH, 5.0% | 13.2 |
| Volatile Organic Compounds (VOC), g/L | 0 |
| Flash Point, °C (°F) | None |
| Solubility in Water, g/L | Complete |
| Chelates | Yes |
| Biodegradable | Yes |
| Corrosive | Yes |
Process Parameters
| Parameter | Typical Operating Range |
|---|---|
| Spray Concentration, % (v/v) | 1.0–5.0 |
| Immersion Concentration, % (v/v) | 2.0–10.0 |
| Operating Temperature, °C (°F) | 20.0–88.0 (68.0–190.4) |
| Typical Contact Time | 5 sec–5 min |
| Application Methods | Spray washer, tank/immersion and select no-rinse processes |
| Corrosion Protection | Up to 90 days indoor flash-rust protection |
Material Compatibility
| Material | Compatibility |
|---|---|
| Aluminum | Not Compatible |
| Cast Steel | Compatible |
| Monel | Test for Compatibility |
| Brass | Test for Compatibility |
| Copper | Test for Compatibility |
| Nickel | Test for Compatibility |
| Bronze | Test for Compatibility |
| Hastelloy | Test for Compatibility |
| Stainless Steel | Compatible |
| Carbon Steel | Compatible |
| Inconel | Test for Compatibility |
| Tantalum | Test for Compatibility |
| Cast Iron | Compatible |
| Incoloy 825 | Test for Compatibility |
| Titanium | Test for Compatibility |
| Ti6Al4V | Test for Compatibility |
| Zinc | Not Compatible |
| Zinc Plating | Not Compatible |
| Galvanized Surfaces | Not Compatible |
| Magnesium | Compatible |
| Other Metals | Test for Compatibility |
Available Sizes
| Package Size | Net Weight |
|---|---|
| 275-gallon tote | 3,052 lb |
| 55-gallon drum | 610 lb |
| 5-gallon pail | 55.5 lb |
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