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ABS-Like vs General Purpose

Polyurethane · grade comparison

ABS-Like and General Purpose are both polyurethane grades, both rigid pu. ABS-Like is the stronger of the two: tensile strength 52 MPa (7.54 ksi) against 40 MPa (5.8 ksi) for General Purpose, about 30% more. In exchange, General Purpose is the more ductile: elongation 520% versus 12% for ABS-Like, and ABS-Like is harder (82 Shore D vs 30 Shore D). ABS-Like is lighter (1.12 g/cm³ vs 1.2 g/cm³ for General Purpose) and ABS-Like is stiffer (2.2 GPa vs 0.03 GPa). On the shop floor, ABS-Like machines more easily (good vs fair) and General Purpose welds better (poor vs not recommended).

ABS-LikeChoose it when strength drives the design, or when weight is the constraint.

General PurposeChoose it when the part is bent, formed or impact-loaded, or when the part sees heat.

ABS-Like vs General Purpose: properties

ABS-LikeGeneral Purpose

Mechanical

Strength, stiffness, ductility and hardness at room temperature.

Elastic (Young's) Modulus

2.2 GPa0.32 Msi
0.03 GPa0 Msi

Shear Modulus

0.8 GPa0.12 Msi
—

Bulk Modulus

3 GPa0.48 Msi
—

Poisson's Ratio

0.39
0.48

Tensile Strength (Ultimate)

52 MPa7.5 ksi
40 MPa5.8 ksi

Yield Strength (0.2% offset)

45 MPa6.5 ksi
—

Elongation at Break

12%
520%

Compressive Strength

78 MPa11.3 ksi
25 MPa3.6 ksi

Compressive Modulus

2.1 GPa0.3 Msi
—

Flexural Strength

76 MPa11 ksi
—

Flexural Modulus

2.2 GPa0.32 Msi
—

Shear Strength

38 MPa5.5 ksi
15 MPa2.2 ksi

Fracture Toughness (K_IC)

1.3 MPa·√m1.2 ksi·√in
—

Izod Impact, Notched

35 J/m0.66 ft·lbf/in
—

Hardness, Shore D

82 Shore D
30 Shore D

Hardness, Rockwell M

78 HRM
—

Hardness, Shore A

—
80 Shore A

Tear Strength

—
80 kN/m457 lbf/in

Compression Set (22 h, 70 °C)

—
25%

Physical

Density and transition temperatures.

Density

1.12 g/cm³0.04 lb/in³
1.2 g/cm³0.04 lb/in³

Glass Transition (Tg)

62°C144 °F
-35°C-31 °F

Water Absorption (Saturation)

1.6%
1.8%

Refractive Index

1.51
—

Same in both: Water Absorption (24 h) 0.6%

Thermal

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

Thermal Conductivity

0.2 W/m·K0.12 BTU/hr·ft·°F
0.22 W/m·K0.13 BTU/hr·ft·°F

Specific Heat Capacity

1,500 J/kg·K0.36 BTU/lb·°F
1,750 J/kg·K0.42 BTU/lb·°F

Thermal Expansion (CTE, 20–100 °C)

90 µm/m·K50 µin/in·°F
180 µm/m·K100 µin/in·°F

Max Service Temperature (continuous)

55°C131 °F
85°C185 °F

Min Service Temperature

-20°C-4 °F
-40°C-40 °F

Heat Deflection Temp. @ 0.45 MPa

60°C140 °F
—

Heat Deflection Temp. @ 1.8 MPa

50°C122 °F
—

Limiting Oxygen Index

19%
20%

Max Service Temperature (short-term)

75°C167 °F
120°C248 °F

Electrical

Conductivity and insulation.

Electrical Resistivity

1×10¹² Ω·m3.94×10¹⁹ µΩ·in
1×10¹⁰ Ω·m3.94×10¹⁷ µΩ·in

Dielectric Strength

18 kV/mm457 V/mil
22 kV/mm559 V/mil

Dielectric Constant (1 MHz)

3.4
5

Dissipation Factor (1 MHz)

0.03
0.05

Volume Resistivity

1×10¹⁴ Ω·cm
1×10¹² Ω·cm

Surface Resistivity

1×10¹⁴ Ω
1×10¹³ Ω

Comparative Tracking Index (CTI)

—
600 V

Chemical & Environmental

Corrosion and environmental resistance (0–100 scores).

Corrosion Resistance

68 / 100
80 / 100

UV / Weathering Resistance

25 / 100
35 / 100

Manufacturability

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

Machinability

55 / 100
45 / 100

Weldability

5 / 100
15 / 100

Formability (cold)

5 / 100
72 / 100

Polishability

72 / 100
30 / 100

Mold Shrinkage

0.6%
1.2%

Processing Melt Temperature (typ.)

30°C86 °F
—

Mold Temperature (typ.)

—
100°C212 °F

Sustainability

Primary-production footprint per kilogram.

Embodied Energy (primary production)

120 MJ/kg51,591 BTU/lb
105 MJ/kg45,142 BTU/lb

Embodied Carbon (primary production)

6.5 kg CO₂/kg
5 kg CO₂/kg

Embodied Water

200 L/kg24 gal/lb
300 L/kg35.9 gal/lb

Typical Recycled Content

0%
3%

Common Calculations

Ratios derived from the values above.

Specific Strength (UTS / density)

46 kN·m/kg
33 kN·m/kg

Specific Stiffness (E / density)

2 MN·m/kg
0 MN·m/kg

Thermal Shock Resistance Index

0
2

Same in both: Thermal Diffusivity 0.1 mm²/s

Strength versus weight

Yield strength against density for every polyurethane grade in the FabDigit library; the compared grades are highlighted. Up and left is stronger for its weight.

71015203050701.11.21.31.4Density (g/cm³)Yield strength (MPa) — log scaleGeneral PurposeABS-Like

Manufacturing and finishing

CapabilityABS-LikeGeneral Purpose
Default condition——
Relative cost$ Budget$ Budget
Min. machined wall——
Best machined surface——

Both are offered for Urethane casting.

ABS-Like vs General Purpose — frequently asked

Is ABS-Like stronger than General Purpose?

Yes. ABS-Like has a typical tensile strength of 52 MPa (7.54 ksi) against 40 MPa (5.8 ksi) for General Purpose — about 30% more.

Which is cheaper, ABS-Like or General Purpose?

Both sit in the same relative cost tier ($, budget); the part price will be decided by machining time, tolerance and quantity rather than by the material.

Which is easier to machine, ABS-Like or General Purpose?

ABS-Like. Its machinability rates good (55/100) against fair (45/100) for General Purpose; for welding the order is General Purpose first (poor, 15/100) then ABS-Like (not recommended, 5/100).

Ready to make it?

Upload a CAD file and FabDigit prices the part in ABS-Like and General Purpose 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.