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ESD-Safe Resin vs Formlabs Rigid 10K

Polymer · grade comparison

ESD-Safe Resin and Rigid 10K are both polymer grades. Rigid 10K is the stronger of the two: tensile strength 75 MPa (10.9 ksi) against 52 MPa (7.54 ksi) for ESD-Safe Resin, about 44% more. In exchange, ESD-Safe Resin is the more ductile: elongation 6% versus 2.5% for Rigid 10K. ESD-Safe Resin is lighter (1.17 g/cm³ vs 1.55 g/cm³ for Rigid 10K) and Rigid 10K is stiffer (5.5 GPa vs 2.4 GPa). On the shop floor, ESD-Safe Resin machines more easily (good vs fair) and Rigid 10K sits in a lower cost tier (premium, $$$) than ESD-Safe Resin (high, $$$$).

ESD-Safe ResinChoose it when the part is bent, formed or impact-loaded, or when weight is the constraint.

Rigid 10KChoose it when strength drives the design, or when the part sees heat.

ESD-Safe Resin vs Rigid 10K: properties

ESD-Safe ResinRigid 10K

Mechanical

Strength, stiffness, ductility and hardness at room temperature.

Elastic (Young's) Modulus

2.4 GPa0.35 Msi
5.5 GPa0.8 Msi

Poisson's Ratio

0.38
0.35

Tensile Strength (Ultimate)

52 MPa7.5 ksi
75 MPa10.9 ksi

Elongation at Break

6%
2.5%

Compressive Strength

78 MPa11.3 ksi
105 MPa15.2 ksi

Flexural Strength

78 MPa11.3 ksi
125 MPa18.1 ksi

Flexural Modulus

2.2 GPa0.32 Msi
5 GPa0.73 Msi

Izod Impact, Notched

22 J/m0.41 ft·lbf/in
17 J/m0.32 ft·lbf/in

Hardness, Shore D

82 Shore D
85 Shore D

Hardness, Rockwell M

85 HRM
95 HRM

Compressive Modulus

—
5 GPa0.73 Msi

Fracture Toughness (K_IC)

—
0.9 MPa·√m0.82 ksi·√in

Physical

Density and transition temperatures.

Density

1.17 g/cm³0.04 lb/in³
1.55 g/cm³0.06 lb/in³

Glass Transition (Tg)

68°C154 °F
105°C221 °F

Water Absorption (Saturation)

1.6%
—

Same in both: Water Absorption (24 h) 0.5%

Thermal

How each material carries heat and how hot it can run.

Thermal Conductivity

0.22 W/m·K0.13 BTU/hr·ft·°F
0.3 W/m·K0.17 BTU/hr·ft·°F

Specific Heat Capacity

1,450 J/kg·K0.35 BTU/lb·°F
1,250 J/kg·K0.3 BTU/lb·°F

Thermal Expansion (CTE, 20–100 °C)

80 µm/m·K44.4 µin/in·°F
45 µm/m·K25 µin/in·°F

Max Service Temperature (continuous)

60°C140 °F
100°C212 °F

Min Service Temperature

-20°C-4 °F
-30°C-22 °F

Heat Deflection Temp. @ 0.45 MPa

70°C158 °F
130°C266 °F

Heat Deflection Temp. @ 1.8 MPa

55°C131 °F
105°C221 °F

Limiting Oxygen Index

20%
21%

Max Service Temperature (short-term)

90°C194 °F
150°C302 °F

Electrical

Conductivity and insulation.

Electrical Resistivity

1,000,000 Ω·m3.94×10¹³ µΩ·in
1×10¹² Ω·m3.94×10¹⁹ µΩ·in

Volume Resistivity

1×10⁸ Ω·cm
1×10¹⁴ Ω·cm

Surface Resistivity

1×10⁸ Ω
1×10¹⁴ Ω

Dielectric Strength

—
15 kV/mm381 V/mil

Dielectric Constant (1 MHz)

—
3.6

Dissipation Factor (1 MHz)

—
0.03

Chemical & Environmental

Corrosion and environmental resistance (0–100 scores).

Corrosion Resistance

70 / 100
80 / 100

UV / Weathering Resistance

45 / 100
25 / 100

Manufacturability

FabDigit workshop ratings (0–100 scores) — how each material behaves on the machine.

Machinability

55 / 100
40 / 100

Weldability

5 / 100
3 / 100

Polishability

40 / 100
55 / 100

Processing Melt Temperature (typ.)

30°C86 °F
—

Formability (cold)

—
3 / 100

Sustainability

Primary-production footprint per kilogram.

Embodied Carbon (primary production)

5.5 kg CO₂/kg
6 kg CO₂/kg

Embodied Water

—
200 L/kg24 gal/lb

Same in both: Embodied Energy (primary production) 115 MJ/kg49,441 BTU/lb · Typical Recycled Content 0%

Common Calculations

Ratios derived from the values above.

Specific Strength (UTS / density)

44 kN·m/kg
48 kN·m/kg

Specific Stiffness (E / density)

2.1 MN·m/kg
3.5 MN·m/kg

Thermal Diffusivity

0.1 mm²/s
0.2 mm²/s

Same in both: 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.

0.1110100123Density (g/cm³)Yield strength (MPa) — log scaleFormlabs Rigid 10K

Manufacturing and finishing

CapabilityESD-Safe ResinRigid 10K
Injection molding—Yes
3D printing—Yes
Default condition—Glass Filled
Relative cost$$$$ High$$$ Premium
Min. machined wall——
Best machined surface——
Chrome Plating (Plastic)—Yes
Conductive Coating—Yes
Dyeing (Nylon)—Yes
EMI Shielding Coating—Yes
Painting—Yes
Primer Coating—Yes
Soft Touch Coating—Yes
Spray Painting—Yes
Tinted Coating—Yes
UV Coating—Yes
Vacuum Metallization—Yes
Waterproof Coating—Yes

ESD-Safe Resin vs Rigid 10K — frequently asked

Is Rigid 10K stronger than ESD-Safe Resin?

Yes. Rigid 10K has a typical tensile strength of 75 MPa (10.9 ksi) against 52 MPa (7.54 ksi) for ESD-Safe Resin — about 44% more.

Which is cheaper, ESD-Safe Resin or Rigid 10K?

Rigid 10K is the lower-cost material: it sits in the premium tier ($$$) while ESD-Safe Resin is high ($$$$). 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, ESD-Safe Resin or Rigid 10K?

ESD-Safe Resin. Its machinability rates good (55/100) against fair (40/100) for Rigid 10K.

Ready to make it?

Upload a CAD file and FabDigit prices the part in ESD-Safe Resin and Rigid 10K 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.