Comparison

High Acrylonitrile Nitrile Butadiene Rubber (NBR) vs ABS

A side-by-side comparison of Nitrile Butadiene Rubber (NBR) - High Acrylonitrile Content and Acrylonitrile Butadiene Styrene.

Property

High Acrylonitrile Nitrile Butadiene Rubber (NBR)

ABS

Physical

Density

1.00 - 1.05 g/cm³

1.04 – 1.07 g/cm³

Water Absorption (24h)

0.1 - 0.3 %

0.20 – 0.45 %

Transparency

Opaque

Shrinkage

1.0 - 2.0 %

0.4 – 0.9 %

Specific Gravity

—

1.05

Surface Finish

—

Matte to glossy

Mechanical

Young's Modulus

0.03 - 0.07 GPa

1.8 – 2.5 GPa

Tensile Strength

15 - 25 MPa

40 – 50 MPa

Elongation at Break

200 - 400 %

10 – 50 %

Impact Strength (Izod)

N/A

200 – 400 J/m

Flexural Strength

—

60 – 80 MPa

Hardness (Rockwell R)

—

100 – 115

Thermal

Glass Transition Temperature

-15 to -5 °C

105 °C

Melting Point

N/A

Amorphous (no true Tm)

Continuous Service Temperature

-10 to 120 °C

70 – 90 °C

Heat Deflection Temperature

N/A

85 – 100 °C

Thermal Conductivity

—

0.17 W/m·K

CTE

—

80 – 100 × 10⁻⁶ /K

Electrical

Dielectric Constant

3.8 - 4.5

2.7 – 3.2

Volume Resistivity

10^9 - 10^11 Ohm-cm

10¹⁶ Ω·cm

Dielectric Strength

8 - 12 kV/mm

15 – 20 kV/mm

Surface Resistivity

—

10¹⁵ Ω

Chemical resistance

Acids

Good

—

Bases

Good

Solvents

Excellent resistance to aliphatic hydrocarbons, fuels, oils, and many solvents

—

UV Resistance

Fair

Poor (unless stabilized)

Acids (dilute)

—

Good

Alcohols

—

Good

Oils & Greases

—

Fair

Gasoline

—

Poor

Acetone

—

Attacks / dissolves

Weathering

—

Poor without stabilizers

Sustainability

Recyclability

Limited

Recyclable (mechanical)

Recycling Code

N/A

7 (Other)

Carbon Footprint

Moderate

~3.1 kg CO₂e / kg

Bio-based Content

—

0 %