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GEHR PPS® is continuous operating temperature of this high-performance plastic is approximately +230 °C. It has very high mechanical performance combined with excellent thermal and chemical resistance as well as high dimensional stability and creep resistance. The LOI of this material is among the highest among polymers. The excellent hardness and stiffness are further characteristics of PPS. It closes the gap between semi-crystalline, engineering plastics and PEEK through its strength and economic efficiency.

Polymer Name: Polyphenylene Sulfide (PPS)

Physical Form: Custom, Rods, Sheets

Features: Chemical Resistant, Dimensional Stability, Excellent Performance, Good Thermal Stability, Good Weather Stability, High Hardness, High Hydrolysis Resistance, High Rigidity, High Strength, High Temperature Insulation Properties

Density: 1340.0 - 1650.0 kg/m³

Color: Black

Technical Data Sheet
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Knowde Enhanced TDS

Identification & Functionality

Technologies

Features & Benefits

Properties
  • Very high strength and rigidity
  • High hardness
  • High thermostability
  • High dimensional stability
  • Very high chemical resistance
  • Very good insulating properties
  • High weather resistance
  • High resistance to hydrolysis

Applications & Uses

Plastics & Elastomers Processing Methods
Applications
  • Pump parts
  • Fan parts
  • Impellers
  • Wheels
  • Valve balls
  • Parts in the fuel and automotive sector

Properties

Color
Flame Rating
Physical Form
Form and Condition
Rods. Sheets / Solid
Odor
Odorless
Insoluble in
Water
Mechanical Properties
ValueUnitsTest Method / Conditions
Tensile Strength at Yield94MPaISO 527
Tensile Strength at Break88MPaISO 527
Elongation at Break (R)8%ISO 527
Impact Strength (an)28kJ/m2ISO 179
Ball Indentation (Rockwell Hardness)246 (M 90)MPaISO 2039
Hardness88Shore DISO 868
Flexural Strength (B 3,5 %)170MPaISO 178
Flexural Strength (B 3,5 %)143MPaISO 178
Modulus of elasticity (Et)3700MPaISO 527
Physical Properties
ValueUnitsTest Method / Conditions
Specific Gravity1.35ISO 1183
Water Absorption0.02%ISO 62
Humidity Absorption0.01%ISO 62
Maximum Permissible Service Temperature230°CUL746B
Thermal Properties
ValueUnitsTest Method / Conditions
Heat Deflection Temperature (HDT/A)115°CISO 75
Coefficient of Linear Thermal Expansion0.58K-1.10-4ISO 11359
Thermal Conductivity (20°C)0.25W/(m.K)ISO 22007-4
Glass Transition Temperature (Tg)97°CISO 3146
Melting Temperature (Tm)280°CISO 3146
Typical Properties
ValueUnitsTest Method / Conditions
Density1.34 - 1.65g/cm³
Melting Temperature280°C
Thermal Decompositionmin. 370°C
Ignition Temperaturemin. 480°C
Electrical Properties
ValueUnitsTest Method / Conditions
Volume Resistivitymin. 10^11Ω.cmIEC 60093
Surface Resistivity (Ro)min. 10^13ΩIEC 60093
Dielectric Constant (1MHz)3.2-IEC 60250
Dielectric Strength30kV/mmIEC 60243-1
Tracking ResistanceCTI 125VIEC 60112
Additional Information
ValueUnitsTest Method / Conditions
BondabilityYes--
Physiological Indifference (FDA)Yes-
FlammabilityV-0-UL 94
Limiting Oxygen Index (LOI, 9)47%ASTM D2863
UV Stabilisation (6, 9)Limited--

Regulatory & Compliance

Certifications & Compliance

Technical Details & Test Data

Fire-fighting Measures

Suitable extinguishing agents

Water, foam, dry chemical, carbon dioxide (CO2).

Potential combustion products

Carbon dioxide (CO2), carbon monoxide (CO). Formation of further decomposition and oxidation products depend upon the fire conditions. Under special fire conditions traces of other toxic substances are possible.

Special protective equipment

Wear a self-contained breathing apparatus. If exposed to combustion fumes bring the victim into fresh air.

Further information

Dispose of fire debris and contaminated extinguishing water in accordance with official regulations..

Safety & Health

Safety Measures

The general industrial safety measures should be considered. A thermal damage during machining should be avoided.

Storage & Handling

Machining

The product can be machined with standard machinery and tools. Before machining the product should be stored at room temperature 24 h. Evacuate swarf to prevent slipping or tripping. Observe the maximum allowable concentration of dust and formaldehyd levels on the working area which apply in your country. Wear safety goggles during machining. General dust limit value: Respirable dust (6 mg/m3); Inhalable dust (10 mg/m3 ). Free glass fiber or dust may cause irritations. Little or no exposure based on inhaling fibers are expected.

Storage

The products shall be stored indoor to keep away from any source of degradation such as sunlight, UV-jets, ionizing radiation, chemicals.