mPPE
also Noryl
A blend of PPE resin with high-impact polystyrene (HIPS) that greatly improves melt processability versus neat PPE while retaining good dimensional stability, low water absorption, and flame retardancy; the dominant commercial form of PPE used in injection molding.
Reference datasheet — mPPE is not in the instant-quote catalog. Upload your part and an engineer will quote it in this grade or suggest the closest stocked equivalent.
Values for the UNF condition
mPPE grades and fills
mPPE is supplied in 12 conditions, soft to hard. UNF is the default FabDigit quotes; the values on this page are for it.
Compare all 12 grades and fillsHide
| Grade · open for datasheet | Best for | Yield MPa | Tensile MPa | Elong. % | Hardness |
|---|---|---|---|---|---|
Structural foam grade | Chemically blown thick-wall grade for large, stiff, low-density enclosures and pallets. | 32 | 32 | 5 | 110 HRR |
PPE+PP alloy | Low-density, hydrolysis- and chemical-resistant alloy used for EV battery packs and photovoltaic hardware where light weight plus non-halogen FR matters. | 40 | 42 | 25 | 60 HRM |
Impact-modified | Rubber-boosted grade for thin-wall enclosures and parts needing cold-temperature drop resistance. | 46 | 46 | 70 | 65 HRM |
Mineral / talc filled | Low-warpage stiffening with isotropic shrinkage and good surface for painted or plated cosmetic parts. | 52 | 52 | 12 | 82 HRM |
Non-halogen flame-retardant, UL 94 V-0 | Phosphate-ester FR grade for enclosures, breakers, PV junction boxes and battery components requiring V-0 at 1.5 mm. | 55 | 40 | ||
PPE+PA alloy | Semi-crystalline nylon-continuous alloy chosen when solvent resistance and online-paint-bake temperature are needed (automotive fenders, EV connectors). | 55 | 58 | 45 | 70 HRM |
UNFDefault Unfilled / natural | Default choice for housings, water-contact parts and dielectric components needing toughness and dimensional stability. | 58 | 58 | 50 | 78 HRM |
ESD / static-dissipative | Carbon-black or carbon-fiber loaded mPPE for electronics trays, fuel-system and clean-handling parts. | 60 | 60 | 8 | 80 HRM |
10% glass-fiber reinforced | Light reinforcement when stiffness and creep resistance must improve but low warpage is still required. | 76 | 6 | ||
20% glass-fiber reinforced | Mid-range stiffness/temperature upgrade for pump housings and structural brackets. | 95 | 4 | ||
30% glass-fiber reinforced, flame-retardant V-0 | Structural + V-0 combination for EV battery frames, chargers and electrical switchgear. | 100 | 2.8 | 95 HRM | |
30% glass-fiber reinforced | Highest stiffness and HDT of the standard mPPE range; pick for load-bearing housings and metal-replacement parts. | 112 | 3.5 |
Supply forms, finishes and certifications
Ways mPPE is supplied — form, process route, surface or paperwork — without a datasheet of their own. The property values above apply.
| Option | What it is | Type |
|---|---|---|
PLATE | Plating / metallizing grade | Supply form |
UV | UV-stabilized / weatherable | Grade option |
What is mPPE?
A blend of PPE resin with high-impact polystyrene (HIPS) that greatly improves melt processability versus neat PPE while retaining good dimensional stability, low water absorption, and flame retardancy; the dominant commercial form of PPE used in injection molding. mPPE has a density of 1.08 g/cm³ (0.039 lb/in³), lighter than 67% of polymer grades. Its glass-transition temperature is 145°C (293 °F). mPPE has a yield strength of 58 MPa (8.41 ksi) and a tensile strength of 58 MPa (8.41 ksi) — stronger than 66% of polymer grades. Elongation at break is 50% and the elastic modulus is 2.4 GPa (0.348 Msi).
What is mPPE used for?
- electrical enclosures and connectors
- automotive instrument panels
- plumbing fittings
- business machine housings
- HVAC components
Advantages
- Low moisture uptake — 0.07%, better than 81% of polymer grades
mPPE properties
Typical room-temperature values for mPPE-UNF; bars are the position among polymer grades.
Physical4
mPPE has a density of 1.08 g/cm³ (0.039 lb/in³), lighter than 67% of polymer grades. Its glass-transition temperature is 145°C (293 °F).
Mechanical16
mPPE has a yield strength of 58 MPa (8.41 ksi) and a tensile strength of 58 MPa (8.41 ksi) — stronger than 66% of polymer grades. Elongation at break is 50% and the elastic modulus is 2.4 GPa (0.348 Msi).
Thermal11
mPPE is rated for continuous service to 100°C (212 °F). It conducts heat at 0.22 W/m·K (0.127 BTU/hr·ft·°F), better than 60% of polymer grades. Thermal expansion is 65 µm/m·K (36.1 µin/in·°F).
Electrical7
mPPE is an electrical insulator with a dielectric strength of 21 kV/mm (533.4 V/mil) and a resistivity of 1×10¹⁴ Ω·m.
Chemical & Environmental3
Corrosion resistance is very good (80/100), worse than 52% of polymer grades. UV resistance is fair.
Sustainability4
Producing a kilogram of mPPE takes about 110 MJ of energy and emits 4.6 kg of CO₂ — more than 64% of polymer grades. Typical recycled content is 5%.
Manufacturability8
mPPE's machinability is good (65/100, better than 66% of polymer grades); weldability good (65/100); formability poor (30/100).
Common Calculations5
Values are nominal handbook figures for design screening. Certified mill or lot data ships with every FabDigit order on request.
Strength versus weight in the polymer family
Yield strength against density for every polymer grade FabDigit runs. mPPE is highlighted; hover a dot for its name, or open the interactive family chart.
Working with mPPE
Is mPPE easy to machine?
Machines cleanly with sharp positive-rake tools and air cooling; avoid aromatic/chlorinated coolants which cause stress cracking, and anneal 2 h at ~110 °C before tight-tolerance finishing.
Can mPPE be welded?
Excellent for ultrasonic, vibration and hot-plate welding; solvent bonding with chlorinated solvents or adhesives also works, but hot-gas welding needs careful temperature control to avoid PS-phase degradation.
Can mPPE be formed, bent or molded?
Dry 2–4 h at 100–110 °C, mold at 260–300 °C melt with 60–110 °C tool; amorphous shrinkage of ~0.5–0.7 % is low and isotropic, giving very stable tolerances.
mPPE chemical composition (wt %)
Limits by weight percent from the governing specification, written the way the spec states them — a single maximum for impurities, a range for alloying elements, and the base element as balance. Nominal is the typical mid-range value.
| Element | Spec limit (wt %) | Nominal |
|---|---|---|
| poly(2,6-dimethyl-1,4-phenylene ether) (resin fraction sets Tg/HDT | 25 – 70 | 45 |
| impact modifier (SBS/SEBS rubber) | 0 – 10 | 3 |
| phosphate ester flame retardantFR grades only, non-halogen | 0 – 15 | 0 |
| glass fiberGF variants | 0 – 30 | 0 |
| stabilizers, pigments, mold release | 0.3 – 3 | 1 |
| high-impact polystyrene (HIPS/PS)flow and impact carrier phase | ≥ 25 (balance) |
What surface finishes work on mPPE?
Takes paint, hot stamping and electroless plating well after standard etch/primer steps; UV-absorbing paint or pigment is recommended for outdoor use since unstabilized mPPE yellows.
Equivalent designations
Standards and trade names that resolve to mPPE in FabDigit's catalog. Equivalence is nominal — check the exact specification when certification matters.
- Trade names
- Noryl
- Similar grades
- PPE+PS
How much does mPPE cost?
mPPE is a premium-cost polymer ($$$), cheaper than about 51% of the materials FabDigit quotes. Part price depends far more on geometry, tolerance and quantity than on the raw stock — upload a CAD file for a live quote.
mPPE — frequently asked
What is mPPE used for?
mPPE is typically used for electrical enclosures and connectors, automotive instrument panels, plumbing fittings, business machine housings and HVAC components. In short: most dimensionally stable amorphous resin; lowest-density engineering thermoplastic; inherently flame-retardant blend.
What is the yield strength of mPPE?
mPPE has a typical yield strength of 58 MPa (8.41 ksi) and a tensile strength of 58 MPa (8.41 ksi) — stronger than 66% of polymer grades. Strength varies by condition: see the 12 listed tempers.
Is mPPE easy to machine?
Reasonably — machinability is rated good (65/100, better than 66% of polymer grades). Machines cleanly with sharp positive-rake tools and air cooling; avoid aromatic/chlorinated coolants which cause stress cracking, and anneal 2 h at ~110 °C before tight-tolerance finishing.
Can mPPE be welded?
Yes — weldability is rated good (65/100). Excellent for ultrasonic, vibration and hot-plate welding; solvent bonding with chlorinated solvents or adhesives also works, but hot-gas welding needs careful temperature control to avoid PS-phase degradation.
What surface finishes work on mPPE?
Takes paint, hot stamping and electroless plating well after standard etch/primer steps; UV-absorbing paint or pigment is recommended for outdoor use since unstabilized mPPE yellows.
Can mPPE be formed, bent or molded?
Dry 2–4 h at 100–110 °C, mold at 260–300 °C melt with 60–110 °C tool; amorphous shrinkage of ~0.5–0.7 % is low and isotropic, giving very stable tolerances.
What is the maximum service temperature of mPPE?
mPPE is rated for continuous use to about 100°C (212 °F), and briefly to 130°C. Strength falls off well before that limit — check the elevated-temperature data for load-bearing parts.
What is the difference between mPPE UNF and mPPE SF?
UNF is the default condition — default choice for housings, water-contact parts and dielectric components needing toughness and dimensional stability. SF: chemically blown thick-wall grade for large, stiff, low-density enclosures and pallets. Yield strength is 58 MPa in UNF versus 32 MPa in SF.
How much does mPPE cost?
mPPE is a premium-cost polymer ($$$), cheaper than about 51% of the materials FabDigit quotes. Part price depends far more on geometry, tolerance and quantity than on the raw stock — upload a CAD file for a live quote.
Sources
- Noryl resin family datasheets (731, N190, GFN2/GFN3, PPX, GTX) — SABIC Specialties / SHPP (2023)
- CAMPUS plastics database — PPE+PS entries — CWFG / CAMPUS consortium (2024)
- Engineered Materials Handbook Vol. 2: Engineering Plastics — ASM International (1988)
- ISO 1043-1 / ISO 527 / ISO 75 / ISO 306 test methods for thermoplastics — ISO (2019)
- GB/T 15065 GB/T 1040 — SAC (2018)
Property data is compiled from published supplier and standards handbooks and normalised for comparison; hardness values on non-Brinell scales are converted approximately for charting only. Manufacturability limits are FabDigit quote-engine defaults and may be relaxed by engineering review. Nothing on this page is a certification — request mill certs, CoC or material test reports with your order.