Stanyl® TW371

Heat Stabilized, Wear and Friction Modified

General Information

Stanyl® is our high-performance polyamide 46 used for applications in automotive, E&E, gears and outdoor power equipments.
Stanyl® is a high performance polyamide that provides unmatched performance and value for demanding applications in which superior heat resistance, design stiffness, wear & friction and process flow qualities are required.
Because Stanyl retains its mechanical properties at high temperatures up to 220°C, this makes it ideal for extremely high-performance applications, where it outperforms PPA, PA6T, PA9T, and often PPS and LCP.
Special features
Regulatory Affairs
Processing technology
Injection Molding
Design challenge
Wear & Friction
Automotive OEM
CALLOUT, GM, PSA
OEM Specification
ASTM D6779-12a PA0620 B50280
GMW15702-110029
SPA X62 4156

Rheological properties

Molding shrinkage [parallel]
2
%
Molding shrinkage [normal]
2
%
Spiral flow length 1.0 mm 800 bar
115
mm
Spiral flow length 1.0 mm 900 bar
125
mm
Spiral flow length 1.0 mm 1000 bar
135
mm

Mechanical properties

Tensile modulus
2900
MPa
Tensile modulus (-40°C)
3400
MPa
Tensile modulus (120°C)
750
MPa
Tensile modulus (160°C)
650
MPa
Tensile modulus (180°C)
600
MPa
Tensile modulus (200°C)
560
MPa
Yield stress
90
MPa
Yield stress (-40°C)
120
MPa
Yield stress (120°C)
45
MPa
Yield stress (160°C)
40
MPa
Yield stress (180°C)
35
MPa
Yield stress (200°C)
30
MPa
Yield strain
20
%
Yield strain (-40°C)
8
%
Nominal strain at break
30
%
Nominal strain at break (120°C)
>50
%
Nominal strain at break (160°C)
>50
%
Nominal strain at break (180°C)
>50
%
Nominal strain at break (200°C)
>50
%
Flexural modulus
2600
MPa
Flexural strength
115
MPa
Charpy impact strength (+23°C)
N
kJ/m²
Charpy impact strength (-30°C)
150
kJ/m²
Charpy notched impact strength (+23°C)
7
kJ/m²
Charpy notched impact strength (-30°C)
5
kJ/m²
Izod notched impact strength (+23°C)
7
kJ/m²
Izod notched impact strength (-40°C)
5
kJ/m²

Thermal properties

Melting temperature (10°C/min)
295
°C
Glass transition temperature (10°C/min)
75
°C
Temp. of deflection under load (1.80 MPa)
190
°C
Temp. of deflection under load (0.45 MPa)
290
°C
Vicat softening temperature (50°C/h 50N)
290
°C
Coeff. of linear therm. expansion (parallel)
0.85
E-4/°C
Coeff. of linear therm. expansion (normal)
1.1
E-4/°C
Burning Behav. at 1.5 mm nom. thickn.
HB
class
Thickness tested
1.5
mm
UL recognition
Yes
-
Burning Behav. at thickness h
HB
class
Thickness tested
3
mm
UL recognition
Yes
-
Thermal Index 2500 hrs
163
°C
Thermal Index 5000 hrs
152
°C
Thermal Index 10000 hrs
141
°C
Thermal Index 20000 hrs
130
°C

Electrical properties

Volume resistivity
1E12
Ohm*m
Surface resistivity
Ohm
Comparative tracking index
400
V

Other properties

Water absorption
11.4
%
Water absorption in water at 23°C after 24h
3.3
%
Humidity absorption
3.2
%
Density
1250
kg/m³

Material specific properties

Viscosity number
180
cm³/g

Diagrams

Applications

Front End Accessory Drive Parts: Belt Tensioner,Damping bands, Shoes and Bushings

Industry
Automotive
  • <ul> <li>Stanyl® PA46 allows for reliable solutions (Extended Tensioner Life, Reduced / eliminated warranty claims) due to its unmatched dry running wear & friction performance at elevated temperatures, its damping capability (consistent Frictional Properties Minimal or no slip / stick), its superior creep Resistance at elevated temperatures</li> <li>Stanyl® PA46 allows for new posible designs</li> </ul>

MTF/DMF Components

Industry
Automotive
  • <ul> <li>Stanyl® PA46 allows for lightweight solutions versus metal and cost effective solutions versus PEEK</li> <li>Stanyl® PA46 allows for reliable solutions due to its excellent wear performance with low or high friction, best in class mechanical properties (combination with high stiffness, good fatigue and ductility at high and low temperatures) and its chemical resistance against used greases and oils</li> </ul>

New Generation Slide Shoe Surfaces

Industry
Automotive
  • <ul> <li>Stanyl® TW371 PA46 allows for sustainable solutions (up to 1 g/km lower CO₂ emissions) because of lower friction coefficients at elevated temperatures compared to PA66</li> <li>Stanyl® TW371 PA46 allows for reliable solutions (7 times longer life time) due its higher abrasion resistance in comparison with PA66</li> <li>Stanyl® PA46 allows for cost effective solutions due to faster cycle times in comparison with PA66</li> <li>Stanyl® HGR1 produces lower frictional torque in comparison with any other material (e.g. PA66) at relatively low engine speeds ranging from idle to 1800 rpm.</li> <li>Stanyl® HGR1 also performs well at vehicle cruise speeds</li> <li>Stanyl® HGR1 will provide OEM's with a very cost-effective tool for reducing fuel consumption</li> </ul>

Shifter fork wear pad

Industry
Automotive
Material
  • <ul> <li>Wear life is better than brass components</li> <li>Commercially 40% to 50% better than Brass alloys</li> <li>Plastic wear particles do not harm bearings and other gearbox</li> <li>Stanyl® TW371 is capable of withstanding high PV values</li> </ul>