描述
Santoprene 203-40 is a hard, colorable and versatile thermoplastic vulcanizate (TPV) from Celanese designed for general-purpose extrusion and molding applications requiring a high level of stiffness while retaining elastomeric deformation capability.
The material is part of the Santoprene TPV family and combines the elastic characteristics of vulcanized rubber with conventional thermoplastic processing.
Unlike softer Santoprene grades normally specified in Shore A, Santoprene 203-40 has a typical hardness of approximately 41 Shore D, reflecting its significantly firmer elastomeric response.
Despite this relatively high hardness, the grade maintains excellent extensibility. Current Celanese-derived material data lists approximately 610% elongation at break, 20.7 MPa tensile stress at break, 9.0 MPa tensile stress at 100% elongation and approximately 64 kN/m tear strength.
This combination makes Santoprene 203-40 particularly useful when a component needs greater mechanical support and tear resistance without moving completely into a rigid thermoplastic.
The grade also offers excellent ozone resistance and good chemical resistance for use in a broad range of automotive, industrial, appliance, electrical and consumer applications. Celanese material data identifies it as a shear-dependent TPV that can be processed using injection molding, extrusion, blow molding, thermoforming and vacuum forming.
Low-temperature performance is supported by a typical brittleness temperature of approximately -52°C, helping the material maintain useful toughness in cold environments.
Santoprene 203-40 is also UL recognized under Celanese material files QMFZ2.E80017 and QMFZ8.E80017.
The material is polyolefin based and can be recycled within an appropriate controlled manufacturing stream.
For more TPV products, visit our TPV Thermoplastic Vulcanizates Product Category →.
For the current Celanese TPV portfolio, see the Official Celanese Santoprene & Geolast Product Finder →.
Key Features of Santoprene 203-40
| Feature | Engineering Benefit |
|---|---|
| Shore D 41 | Provides a high level of stiffness while retaining elastomeric behavior |
| Natural / Colorable | Supports customized product colors and visual identification |
| 610% Elongation at Break | Maintains very high deformation capability despite high hardness |
| 20.7 MPa Tensile Stress at Break | Provides strong mechanical performance |
| 9.0 MPa Stress at 100% Elongation | Reflects the grade’s firmer elastomeric response |
| 64 kN/m Tear Strength | Strong resistance to edge tearing and crack propagation |
| Excellent Ozone Resistance | Supports automotive and weather-exposed service |
| Good Chemical Resistance | Useful in many industrial and technical environments |
| -52°C Brittleness Temperature | Supports low-temperature applications |
| UL Recognized | Current documentation references E80017 |
| Injection Molding + Extrusion | Broad thermoplastic processing flexibility |
| Blow Molding / Thermoforming | Adds options for hollow and shaped elastomeric parts |
| Colorable Natural Base | Suitable for customized color requirements |
| Manufacturing-Stream Recyclability | Controlled process scrap can be recycled within the manufacturing stream |
The strongest reason to select Santoprene 203-40 is its balance of high hardness, very high elongation, strong tensile performance, strong tear resistance and broad thermoplastic processability.
Typical Applications for Santoprene 203-40
Santoprene 203-40 is suitable for a wide range of general-purpose applications where a hard but still elastomeric TPV is required.
| Application Area | Typical Use |
|---|---|
| Automotive Components | Hard elastomeric technical parts requiring ozone resistance |
| Seals & Gaskets | Firm sealing components requiring mechanical support |
| Protective Boots | Flexible protective parts with higher stiffness |
| Bellows | Repeated-movement protective components |
| Plugs & Grommets | Technical protection and sealing |
| Extruded Profiles | Hard flexible technical profiles |
| Protective Covers | Tough elastomeric housings and covers |
| Industrial Components | High-strength flexible parts |
| Appliance Components | Molded and extruded technical components |
| Electrical Components | Protective and insulating elastomeric parts |
| Consumer Products | Firm resilient components |
| Color-Coded Parts | Components requiring customized colors |
| Blow-Molded Parts | Selected hollow TPV components |
| Thermoformed Components | Formed technical elastomeric parts |
Because the grade is measured at 41 Shore D, it is especially useful when the part must hold shape more strongly than conventional Shore A TPV while still retaining high elongation.
Typical Properties of Santoprene 203-40
Physical Properties
| Property | Typical Value | Test Method |
|---|---|---|
| Density | 950 kg/m³ / 0.950 g/cm³ | ISO 1183 |
| Shore D Hardness, 15 s | 41 | ISO 48-4 / ISO 868 |
| Molding Shrinkage – Parallel | 1.7% | ISO 294-4 / ISO 2577 |
| Molding Shrinkage – Normal | 0.9% | ISO 294-4 / ISO 2577 |
| Resin Identification | TPV | ISO 1043 |
| Part Marking Code | >TPV< | ISO 11469 |
| Color | Natural / Colorable | Manufacturer information |
| Product Form | Pellets | Manufacturer information |
The molding shrinkage data is reported on approximately 2.0 mm specimens measured at least 24 hours after molding.
Mechanical Properties
| Property | Typical Value | Test Method |
|---|---|---|
| Tensile Stress at 100% Elongation | 9.0 MPa | ISO 37 |
| Tensile Stress at Break | 20.7 MPa | ISO 527-1/-2 or ISO 37 |
| Elongation at Break | 610% | ISO 527-1/-2 or ISO 37 |
| Tear Strength | 64 kN/m | ISO 34-1 |
| Brittleness Temperature | -52°C | ASTM D746 |
| Low-Temperature Brittleness | -52°C | ISO 812 |
| Compression Set, 70°C / 24 h | 54% | ISO 815 |
| Compression Set, 125°C / 70 h | 61% | ISO 815 |
The mechanical profile shows why Santoprene 203-40 is useful when designers need greater hardness and tensile strength while still retaining substantial elastomeric deformation.
Thermal Properties
| Property | Typical Value | Test Method |
|---|---|---|
| RTI Electrical, 1.5 mm | 85°C | UL 746B |
| RTI Electrical, 3.0 mm | 85°C | UL 746B |
| RTI Strength, 1.5 mm | 85°C | UL 746B |
| RTI Strength, 3.0 mm | 85°C | UL 746B |
Current data also reports approximately -11% change in tensile strength and -15% change in tensile strain at break after 168 hours at 150°C, together with a Shore D hardness change of approximately +4.
Electrical Properties
| Property | Typical Value | Test Method |
|---|---|---|
| Relative Permittivity @ 60 Hz | 2.3 | IEC 62631-2-1 |
| Electric Strength, Short Time, 2 mm | 28 kV/mm | ASTM D149 |
| Comparative Tracking Index | PLC 0 | UL 746A |
| Arc Resistance Performance Level | PLC 5 | UL 746B |
| High-Amperage Arc Ignition, 1.5 mm | PLC 0 | UL 746A |
These properties provide useful design context for electrical housings, protective components and insulating elastomeric parts.
Flammability & Application Suitability
| Property | Typical Value / Rating | Standard |
|---|---|---|
| Burning Behavior @ 1.5 mm | HB | IEC 60695-11-10 |
| Burning Behavior @ 1.0 mm | HB | IEC 60695-11-10 |
| UL Recognition | Yes | UL 94 |
| Hot Wire Ignition @ 1.5 mm | PLC 3 | UL 746A |
| Hot Wire Ignition @ 3.0 mm | PLC 2 | UL 746A |
| Detergent Resistance | f3 | UL 749 |
| Detergent Resistance | f4 | UL 2157 |
Santoprene 203-40 is not positioned as a dedicated flame-retardant TPV, but it carries useful UL and detergent-resistance information for general technical applications.
Automotive OEM Reference for Santoprene 203-40
Current Celanese-derived material data lists the following automotive reference:
| OEM | Specification / Reference | Additional Information |
|---|---|---|
| Stellantis / Chrysler | MS-AR-100 FGN | Natural |
This reference can be useful when evaluating Santoprene 203-40 for automotive technical components and elastomeric parts requiring a natural, colorable high-hardness TPV.
Why Choose Santoprene 203-40?
The main reason to choose Santoprene 203-40 is its combination of Shore D hardness and very high elongation.
At approximately Shore D 41, the material provides substantially greater stiffness than conventional soft TPV grades.
At the same time, elongation remains approximately 610%, allowing the material to undergo substantial deformation without behaving like a conventional rigid engineering plastic.
The tensile stress at break of approximately 20.7 MPa provides a strong mechanical profile.
Its approximately 64 kN/m tear strength also gives the material useful resistance to edge damage, crack initiation and mechanical loading.
Excellent ozone resistance supports outdoor and automotive applications where long-term atmospheric exposure is important.
The approximately -52°C brittleness temperature provides useful low-temperature capability.
Thermoplastic processability is another important advantage. The material can be injection molded, extruded, coextruded, blow molded and thermoformed without requiring a separate vulcanization step.
The natural / colorable base also gives manufacturers flexibility in product appearance and color identification.
For customers requiring a hard, colorable Shore D 41 TPV with high tensile strength, high elongation and strong tear resistance, Santoprene 203-40 is a grade worth evaluating.
Processing Guidelines for Santoprene 203-40
Santoprene 203-40 can be processed by:
- Injection molding
- Multi-injection molding
- Extrusion
- Sheet extrusion
- Coextrusion
- Blow molding
- Thermoforming
These processes are listed in current Celanese-derived grade data.
Current Grade-Specific Injection Conditions
| Processing Parameter | Celanese Guidance |
|---|---|
| Drying Recommended | Yes |
| Drying Temperature | 80°C |
| Drying Time | ≥3 hours in a dehumidified dryer |
| Processing Moisture Content | ≤0.08% |
| Maximum Regrind Level | 20% |
| Optimum Melt Temperature | 220°C |
| Minimum Melt Temperature | 205°C |
| Maximum Melt Temperature | 230°C |
| Optimum Mold Temperature | 30°C |
| Minimum Mold Temperature | 10°C |
| Maximum Mold Temperature | 50°C |
Current grade-specific data therefore gives a practical injection melt window of approximately 205–230°C, with an optimum around 220°C.
Injection Molding Notes
For injection molding, holding pressure should typically be around 50–75% of actual injection pressure.
A relatively high screw speed of approximately 100–200 rpm is recommended.
Back pressure is not always required, but approximately 0.3–0.7 MPa may be used to help maintain a homogeneous melt and consistent shot size. Higher back pressure may be useful when processing masterbatch.
Processors should optimize:
- Screw speed
- Injection speed
- Holding pressure
- Back pressure
- Gate size
- Venting
- Melt temperature
- Mold temperature
- Cooling time
- Surface finish
- Part shrinkage
Extrusion Conditions
| Processing Parameter | Celanese Guidance |
|---|---|
| Drying Temperature | 82°C |
| Drying Time | 3 hours |
| Melt Temperature Reference | 210°C |
For extrusion, optimize:
- Barrel temperature profile
- Adapter temperature
- Die temperature
- Screw speed
- Melt pressure
- Draw-down
- Cooling rate
- Profile dimensions
- Surface finish
Shear-Dependent Flow
Santoprene TPV is strongly shear dependent.
At low shear rates, melt viscosity is relatively high. As shear rate increases, viscosity decreases.
Current processing guidance also notes that increasing temperature has comparatively little effect on melt viscosity, while smaller gates and higher shear rates can help improve melt flow.
Material Compatibility
Santoprene TPV is incompatible with acetal (POM) and PVC.
Equipment should be thoroughly purged when changing between these materials and Santoprene 203-40.
Related Products
We supply a broad range of Santoprene TPV grades for different hardness, color, molding, extrusion and application requirements.
Typical Santoprene product families include:
- Santoprene 101 Series
- Santoprene 201 Series
- Santoprene 103 Series
- Santoprene 203 Series
- Santoprene automotive grades
- Santoprene extrusion grades
- Santoprene sealing grades
- Santoprene specialty TPV grades
View More TPV Thermoplastic Vulcanizates →
If you are unsure which Santoprene grade fits your project, send us your required hardness, color, processing method, service temperature and application information.
Technical Documents for Santoprene 203-40
| Document Type | Description |
|---|---|
| TDS | Current physical, mechanical, thermal, electrical and processing data |
| SDS | Safety Data Sheet |
| UL Information | QMFZ2.E80017 / QMFZ8.E80017 recognition |
| Automotive Specification Information | Stellantis / Chrysler MS-AR-100 FGN reference |
| Santoprene Product Finder | Celanese grade portfolio and positioning |
| Processing Guide | Injection molding, extrusion and related processing guidance |
| COA | Batch-specific quality information where available |
Need technical documents for Santoprene 203-40?
📧 Email: ruiqingchem@gmail.com
📝 Online form: Contact Us →
Please state Santoprene 203-40 and the required document type when submitting your inquiry.
FAQ About Santoprene 203-40
Q1: What is Santoprene 203-40?
Santoprene 203-40 is a hard, natural and colorable general-purpose thermoplastic vulcanizate from Celanese designed for molding and extrusion applications.
Q2: What is the hardness of Santoprene 203-40?
The current typical value is approximately Shore D 41.
Q3: Is Santoprene 203-40 Shore A 40?
No. The current published hardness is approximately 41 Shore D. The “40” in the grade name should not be interpreted as Shore A 40.
Q4: What is the elongation at break?
Current grade data lists approximately 610% elongation at break.
Q5: What is the tensile stress at break?
The current typical tensile stress at break is approximately 20.7 MPa.
Q6: What is the tear strength?
Current grade data lists approximately 64 kN/m.
Q7: How does Santoprene 203-40 perform at low temperature?
The current brittleness temperature is approximately -52°C.
Q8: Is Santoprene 203-40 suitable for outdoor applications?
The grade is specifically listed as having excellent ozone resistance, which supports many weather-exposed and automotive applications.
Q9: Is Santoprene 203-40 UL recognized?
Yes. Current material data lists UL recognition and references Celanese files QMFZ2.E80017 and QMFZ8.E80017.
Q10: Can Santoprene 203-40 be injection molded?
Yes. Current Celanese-derived data lists injection molding and multi-injection molding among the supported processes.
Q11: Can Santoprene 203-40 be extruded?
Yes. Extrusion, sheet extrusion and coextrusion are listed processing methods.
Q12: Can Santoprene 203-40 be blow molded?
Yes. Blow molding is included in the current processing characteristics.
Q13: Does Santoprene 203-40 need drying?
Yes. Current injection guidance recommends drying at approximately 80°C for at least 3 hours in a dehumidified dryer.
Q14: What injection melt temperature is recommended?
Current grade-specific guidance lists approximately 220°C optimum melt temperature, with a range of approximately 205–230°C.
Q15: What extrusion temperature is recommended?
Current extrusion data gives a melt-temperature reference of approximately 210°C.
Q16: Is Santoprene 203-40 colorable?
Yes. Santoprene 203-40 is described as a hard, colorable TPV.
Request Santoprene 203-40 Price & Technical Support
For pricing, availability, technical documents or application support for Santoprene 203-40, please provide:
- Required quantity
- Destination country or port
- Automotive, industrial, appliance or consumer application
- Seal, profile, protective part or molded-component design
- Required Shore hardness
- Required color
- Continuous and peak operating temperature
- Minimum service temperature
- Compression-set requirement
- Chemical or fluid exposure
- Outdoor / ozone exposure
- Injection-molding, extrusion, blow-molding or thermoforming process
- OEM specification requirement
- UL documentation requirement
- TDS, SDS or COA requirement
- Sample requirement, if applicable
📧 Email: ruiqingchem@gmail.com
