描述
NORYL 731 resin is a non-reinforced blend of polyphenylene ether (PPE) and polystyrene (PS). Manufactured by SABIC, this injection moldable grade exhibits good surface appearance, high ductility, and good impact resistance along with low moisture absorption, creep resistance, dimensional stability, and hydrolytic stability. NORYL 731 resin is an excellent candidate for a variety of applications. This product does not contain PFAS intentionally added during the manufacturing process. Physical property data is determined using test methods established by ASTM International, the globally recognized standards organization.
NORYL 731 is one of the most common unfilled grades of NORYL, containing about 50 wt% polystyrene. For more NORYL grades and technical information, please visit our PPO/PPE product page.
Key Features of NORYL 731 Resin
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Good Surface Appearance – Provides aesthetically pleasing finished parts
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High Ductility – Offers excellent flexibility and toughness
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Good Impact Resistance – Withstands mechanical stress during handling and use
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Low Moisture Absorption – One of the lowest water absorption rates among engineering thermoplastics
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Creep Resistance – Maintains dimensional integrity under sustained load
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Dimensional Stability – Precise part geometry with low warpage
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Hydrolytic Stability – Resists degradation in wet environments
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Amorphous – Transparent/translucent appearance options
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Low Shrinkage – Excellent mold shrinkage control
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Low Specific Gravity – Lightweight compared to many other engineering plastics
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No PFAS Intentionally Added
Typical Applications for NORYL 731 Resin
| Industry | Typical Components & Considerations |
|---|---|
| Building & Construction | Building components, pipes, fittings |
| Consumer Goods | Home appliances, commercial appliances, lighting |
| Electrical & Electronics | Displays, electrical components, infrastructure |
| Industrial | Material handling, electrical applications |
| Automotive | Interior, under the hood, exterior components |
| Water Management | Valves, filtration components, water meter internals |
| Healthcare | Medical device components, surgical equipment |
| Aerospace | Various components |
Typical Properties of NORYL 731 Resin
| Property | Value | Test Method |
|---|---|---|
| Specific Gravity | 1.06 g/cm³ | ASTM D792 |
| Water Absorption (24 hrs) | 0.06% | ASTM D570 |
| Tensile Stress, Yield | 54 MPa | ASTM D638 |
| Tensile Stress, Break | 45 MPa | ASTM D638 |
| Tensile Strain, Yield | 4% | ASTM D638 |
| Tensile Strain, Break | 30% | ASTM D638 |
| Tensile Modulus | 2400 MPa | ASTM D638 |
| Flexural Stress, Yield | 75 MPa | ASTM D790 |
| Flexural Modulus | 2100 MPa | ASTM D790 |
| Drying Temperature | 100°C | — |
| Drying Time | 3 – 4 h | — |
| Melt Temperature | 250 – 270°C | — |
| Mold Temperature | 70 – 100°C | — |
Important Notes on Typical Data:
Values listed are typical and sourced from manufacturer data sheets. They do not constitute binding product specification.
Batch-to-batch deviations may exist. For critical applications, validate performance with batch-specific COA certificate.
Final performance depends on processing conditions and part design.
Manufacturer official TDS shall serve as definitive technical reference. Request the latest official TDS from our sales team.
Processing Guidelines for NORYL 731 Resin
| Step | Process |
|---|---|
| Drying | Dry at 100°C for 3–4 hours prior to processing |
| Melt Temperature | 250 – 270°C |
| Barrel Zone 1 Temperature | 220 – 240°C |
| Mold Temperature | 70 – 100°C |
| Injection Speed | Medium to high |
| Storage | Store in original, sealed packaging in a cool, dry place away from direct sunlight |
Critical Processing Warnings:
Drying: Proper drying is critical to prevent hydrolysis and achieve optimal mechanical properties.
Mold Temperature: Higher mold temperatures improve surface finish and dimensional stability.
Storage: Store in original, sealed packaging in a cool, dry place away from direct sunlight.
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Technical Documents for NORYL 731 Resin
| Document Type | Description & Source |
|---|---|
| Manufacturer Official TDS | Complete physical, thermal, and mechanical properties of NORYL 731 |
| Manufacturer Official SDS | GHS-compliant safety documentation |
| COA (Certificate of Analysis) | Batch-specific quality certification |
Request any document above by:
Email: ruiqingchem@gmail.com
Online form: Our contact page
We reply within one working business day. Please clearly state product (NORYL 731) and document type you require.
FAQ about NORYL 731 Resin
Q1: What is NORYL 731?
A: NORYL 731 is a non-reinforced blend of polyphenylene ether (PPE) and polystyrene (PS) from SABIC. It is an injection moldable grade offering good surface appearance, high ductility, good impact resistance, low moisture absorption, creep resistance, dimensional stability, and hydrolytic stability.
Q2: What is the specific gravity of NORYL 731?
A: The specific gravity is 1.06 g/cm³ per ASTM D792.
Q3: What are the typical applications for NORYL 731?
A: Typical applications include building and construction components, consumer goods, home appliances, electrical and electronics, industrial material handling, automotive components, water management components, healthcare devices, and aerospace components.
Q4: Does NORYL 731 require drying before processing?
A: Yes, it should be dried at 100°C for 3–4 hours prior to injection molding.
Q5: What is the recommended melt temperature for NORYL 731?
A: The recommended melt temperature is 250–270°C.
Q6: What is the lead time for orders?
A: Regular orders ship within 7-10 working days after payment confirmation. Large-volume orders can be negotiated separately.
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Sample Policy:
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Samples are for laboratory validation tests only, not for production use.
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Buyer bears international sample-shipping freight.
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If bulk-product performance deviates from sample reference, manufacturer official TDS serves as the authoritative benchmark.
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After-Sales Support
| Service | Details |
|---|---|
| Quality Inspection Period | All quality-related claims must be submitted within 7 working days after delivery, supported by test data and photographic evidence. |
| Return / Exchange Policy | Confirmed product defects caused by our side trigger replacement or refund. Terms and conditions apply. |
| Logistics Damage | Report shipping damage directly to carrier immediately upon goods receipt. We assist with claim-document preparation. |
| Technical Support | Remote technical guidance available. On-site troubleshooting can be arranged upon special request. |
| Export Documentation | We supply commercial invoice, packing list, bill of lading, COA, and additional compliance certificates on request. |
Disclaimer
DISCLAIMER: All technical data is referenced from original manufacturer typical values for NORYL 731. Our company acts as authorized distributor/trader rather than original manufacturer. Final performance depends on processing conditions and part design. Buyers shall independently validate product suitability for individual applications. Our firm bears no liability for product failure caused by improper processing or improper usage. Always reference the latest manufacturer official TDS of NORYL 731 as the definitive specification.
