mPP vs PP-H
Polymer · grade comparison
mPP and PP-H are both polymer grades. Both yield at about 33 MPa — strength does not separate them. mPP is the more ductile: elongation 400% versus 300% for PP-H, and PP-H is harder (72 Shore D vs 68 Shore D). PP-H is stiffer (1.5 GPa vs 1.3 GPa). On the shop floor, PP-H sits in a lower cost tier (budget, $) than mPP (standard, $$).
mPPChoose it when the part is bent, formed or impact-loaded.
PP-HChoose it when cost is the deciding factor.
mPP vs PP-H: propertiesHow to read these bars
- One bar per material. A full bar is the highest value among all polymer grades in the FabDigit library; each bar is drawn as a share of that.
- The better value (by the usual engineering direction) is in bold. Rows with no direction — density, thermal conductivity — have no bold.
- Values are typical room-temperature figures for the condition named on each card.
- Confirm against the certified mill or resin datasheet before design release.
How to read these bars
- One bar per material. A full bar is the highest value among all polymer grades in the FabDigit library; each bar is drawn as a share of that.
- The better value (by the usual engineering direction) is in bold. Rows with no direction — density, thermal conductivity — have no bold.
- Values are typical room-temperature figures for the condition named on each card.
- Confirm against the certified mill or resin datasheet before design release.
Mechanical
Strength, stiffness, ductility and hardness at room temperature.
Elastic (Young's) Modulus
Shear Modulus
Yield Strength (0.2% offset)
Elongation at Break
Compressive Strength
Compressive Modulus
Flexural Strength
Flexural Modulus
Izod Impact, Notched
Hardness, Shore D
Hardness, Rockwell R
Fracture Toughness (K_IC)
Hardness, Rockwell M
Same in both: Bulk Modulus 4 GPa0.51 Msi · Poisson's Ratio 0.42 · Tensile Strength (Ultimate) 35 MPa5.1 ksi · Shear Strength 25 MPa3.6 ksi
Physical
Density and transition temperatures.
Density
Melting Temperature (Tm)
Glass Transition (Tg)
Light Transmission
Same in both: Water Absorption (24 h) 0.01% · Water Absorption (Saturation) 0.03% · Refractive Index 1.49
Thermal
How each material carries heat and how hot it can run.
Thermal Conductivity
Specific Heat Capacity
Thermal Expansion (CTE, 20–100 °C)
Max Service Temperature (continuous)
Min Service Temperature
Heat Deflection Temp. @ 1.8 MPa
Vicat Softening Point (B50)
Limiting Oxygen Index
Max Service Temperature (short-term)
Same in both: Heat Deflection Temp. @ 0.45 MPa 100°C212 °F
Electrical
Conductivity and insulation.
Electrical Resistivity
Dielectric Strength
Volume Resistivity
Surface Resistivity
Same in both: Dielectric Constant (1 MHz) 2.25 · Dissipation Factor (1 MHz) 3×10⁻⁴ · Comparative Tracking Index (CTI) 600 V
Chemical & Environmental
Corrosion and environmental resistance (0–100 scores).
UV / Weathering Resistance
Same in both: Corrosion Resistance 90 / 100
Manufacturability
FabDigit workshop ratings (0–100 scores) — how each material behaves on the machine.
Machinability
Weldability
Formability (cold)
Polishability
Mold Shrinkage
Melt Flow Rate
Processing Melt Temperature (typ.)
Mold Temperature (typ.)
Sustainability
Primary-production footprint per kilogram.
Embodied Water
Typical Recycled Content
Same in both: Embodied Energy (primary production) 78 MJ/kg33,534 BTU/lb · Embodied Carbon (primary production) 2 kg CO₂/kg
Common Calculations
Ratios derived from the values above.
Specific Stiffness (E / density)
Modulus of Resilience
Same in both: Specific Strength (UTS / density) 39 kN·m/kg · Thermal Diffusivity 0.1 mm²/s · Thermal Shock Resistance Index 0
Strength versus weight
Yield strength against density for every polymer grade in the FabDigit library; the compared grades are highlighted. Up and left is stronger for its weight.
Manufacturing and finishing
| Capability | mPP | PP-H |
|---|---|---|
| Default condition | — | — |
| Relative cost | $$ Standard | $ Budget |
| Min. machined wall | — | — |
| Best machined surface | — | — |
mPP vs PP-H — frequently asked
What is the difference between mPP and PP-H?
mPP and PP-H are both polymer grades. Both yield at about 33 MPa — strength does not separate them. mPP is the more ductile: elongation 400% versus 300% for PP-H, and PP-H is harder (72 Shore D vs 68 Shore D).
Which is cheaper, mPP or PP-H?
PP-H is the lower-cost material: it sits in the budget tier ($) while mPP is standard ($$). Part price depends far more on geometry, tolerance and quantity than on raw stock — upload a CAD file for a live quote.
Which is easier to machine, mPP or PP-H?
PP-H, by a small margin. Both rate good for machinability — 65/100 against 60/100 for mPP; for welding the order is PP-H first (excellent, 90/100) then mPP (excellent, 85/100).
Ready to make it?
Upload a CAD file and FabDigit prices the part in mPP and PP-H side by side — material, machining time, tolerance and finish in one quote. Certified material data ships with the order on request.
Typical handbook values for the conditions named above, normalised for comparison. Hardness on non-Brinell scales is converted approximately for charting only. Request certified data with your order for design-critical properties.