This table provides a comparison between AEM and HNBR rubber material:
| Properties | AEM (AB7002) | HNBR (ZS7011) |
| Shore A Hardness (°) | 72 | 69 |
| Tensile Strength (MPa) | 17 | 22.6 |
| Elongation at Break (%) | 290 | 346 |
| Tear Strength (kN·m-1) | 40 | 48 |
| Compression Set (%) (150℃ × 70h) | 18 | 23 |
| Compression Set (%) (150℃ × 168h) | 19 | 30 |
| Elongation Change after Heat Aging (%) (150℃ × 70h) | -17 | -8 |
| Elongation Change after Heat Aging (%) (150℃ × 168h) | -21 | -20 |
| Volume change ATF (Dexron III) after Soaking (%) (150℃ × 168h) | +24 | +3 |
| Volume change IRM 903 Oil Swell after Soaking (%) (150℃ × 168h) | +23 | +12 |
| TR10 (°C) | -29 | -23 |
We can see that：
Tensile Strength and Elongation: HNBR outperforms AEM in both tensile strength and elongation, making it more suitable for applications requiring greater mechanical strength.
Oil and ATF Resistance: HNBR demonstrates superior resistance to both ATF. But Considering the cost advantage of AEM compared to HNBR, we still recommend using AEM or ACM materials in ATF environments.The performance of AEM in ATF oil enviroment is acceptable for most of the application.
Low Temperature Performance: AEM has a bit better low temperature performance compare to normal HNBR (there is low temperature HNBR).
Please conact with us, OBT Rubber Seal, to select the right material based on specific application needs.
Reference Reading:
How to measure the hardness: shore A,B,C,D?
How to measure the density of rubber material?
How to Evaluate the Resistance of Rubber to Oils and Other Solvents？
How to Evaluate the Low-Temperature Performance of Rubber?
How to Evaluate the Resistance of Rubber to Oils and Other Solvents？
How to choose between HNBR and AEM?
How to choose between HNBR and FKM(Viton) for O-Ring/gasket?
How choose Between FKM vs FVMQ?
When to use HNBR and Low Temperature HNBR(LT HNBR)?
Low Temperature FKM Rubber: Ideal for Automotive, Aerospace, and Chemical Processing
