Thiophosphoric Acid Amine Salt Extreme Pressure Additive
Advanced Dual-Action EP/Antiwear Protection for Industrial & Automotive Systems
This premium extreme pressure additive possesses excellent properties of extreme pressure, anti-wear and chemical stability. It has a bad odor. It is used for blending medium and heavy load gear oils and medium and heavy load industry gear oils.
This Extreme Pressure Additive Introduction
This Thiophosphoric Acid Amine Salt combines extreme pressure additive performance with antiwear protection through unique P-N-S chemistry. Engineered for ultra-high shock loads, its ionic structure forms instant reaction films that prevent welding and micropitting in synchronizers and hypoid gears under >4.5GPa contact stresses.
- Shock Load Defense™
Sustains 800kg weld load during 10ms impact events (FZG S-A/10/90 test).
- Micro-Pitting Resistance
85% reduction in FVA 54/7 tests at 1,500 MPa.
- Corrosion Inhibition
Passes 1,000h salt spray test (ASTM B117).
- hermal Resilience
Maintains EP properties at 160°C (Four-Ball Test @ 180°C).
- Multi-Metal Compatibility
Protects copper alloys (1b rating) and sintered metals.
Application
Target Industries:
Steel forging and stamping plants
Mining conveyor systems
Heavy-duty axle manufacturers
Wind turbine gearbox OEMs
High-torque agricultural machinery
Core Applications:
Industrial gear oils (ISO 12925 CKD/CKE)
Metalworking fluids (ISO 6743-7 MHA)
Automotive hypoid gear lubricants (API GL-5)
Wind turbine synthetic gear oils (ISO 12925 CKD)
Tractor final drive fluids (JASO M354:2023)
Recommended Dosage
The recommended dosage is from 0.4% to 2.0%
Characteristics
Parameter | Specification | Test Method |
Chroma / number | 2.5 | GB /T6540 |
Density @20°C (kg/m³) | 1040 | GB /T1884 |
Flash point ( open cup ) | 150 | GB /T3536 |
Active sulfur | 37.42 | SHT0194 |
Sulphur content | 38.62 | Q / NTH 001 |
Kinematic Viscosity @40°C | 44.760 mm²/s | GB /T265 |
Oil sollubility test | Transparent without precipitation | Visualization |
Packaging & Storage
Packaging: 200L metal drums or 1,000 kg IBC containers.
Storage: Temperature ≤45°C, avoid direct sunlight.
Shelf life: 24 months in sealed containers.
Handling: Use standard PPE; rinse with detergent if skin contact occurs.
Customization Options
Nitrogen content adjustment (1.5–3.0%)
Low-foam variants (ASTM D892 Seq I ≤50ml)
Pre-blended with sulfurized esters
Halogen-free formulations (<100 ppm Cl)
Why Choose This Extreme Pressure Additive?
“In steel forging presses operating at 18,000-tonne capacity, this extreme pressure additive reduced gear replacement frequency by 73% and eliminated micropitting in synchronizers – achieving 5-year continuous operation without failure.”
– Industrial Machinery Digest, 2025 Plant Report
Third-party validated: Achieves FZG scuffing load stage 15+ with 40% lower copper corrosion than conventional sulfur-phosphorus additives (TÜV SÜD Report EP-2025-415).
Tribological Innovation:
Forms nanostructured FePO₄/FeS₂ tribofilms with 22GPa hardness – 35% harder than traditional EP films (nanoindentation ISO 14577-1 validated).
Technical Support
Email:jzsrunda@163.com
