Significance and Use
4.1 Certain rubber articles, for example, seals, gaskets, hoses, diaphragms, and sleeves, may be exposed to oils, greases, fuels, and other fluids during service. The exposure may be continuous or intermittent and may occur over wide temperature ranges.
4.2 Properties of rubber articles deteriorate during exposure to these liquids, affecting the performance of the rubber part, which can result in partial failure.
Scope
1.1 This test method covers the required procedures to evaluate the comparative ability of rubber and rubber-like compositions to withstand the effect of liquids. It is designed for testing: (1) specimens of vulcanized rubber cut from standard sheets (see Practice D3182), (2) specimens cut from fabric coated with vulcanized rubber (see Test Methods D751), or (3) finished articles of commerce (see Practice D3183). This test method is not applicable to the testing of cellular rubbers, porous compositions, and compressed sheet packing, except as described in 11.2.2.
1.2 ASTM Oils No. 2 and No. 3, formerly used in this test method as standard test liquids, are no longer commercially available and in 1993 were replaced with IRM 902 and IRM 903, respectively (see Appendix X1 for details).
1.3 ASTM No. 1 Oil, previously used in this test method as a standard test liquid, is no longer commercially available and in 2005 was replaced with IRM 901; refer to Table 1 and Appendix X3 for details.
| Property | IRM 901A | IRM 902 | IRM 903 | IRM 905 | ASTM Method |
| Specified Properties: | |||||
| Aniline Point, °C (°F) | 124 ± 1 (255 ± 2) | 93 ± 3 (199 ± 5) | 70± 1 (158 ± 2) | 115 ± 1 (239± 2) | |
| Kinematic Viscosity |
|
|
|
|
|
| (mm2/s [cSt]) |
|
|
|
|
|
| 38°C (100°F) |
| ... | 31.9–34.1 | ... | |
| 99°C (210°F) | 18.12–20.34 | 19.2–21.5 | ... | 10.8–11.9 | |
| Gravity, API, 16°C (60°F) | 28.8 ± 1 | 19.0–21.0 | 21.0–23.0 | ... | |
| Viscosity-Gravity Constant | 0.790–0.805 | 0.860–0.870 | 0.875–0.885 | ... | |
| Flash Point COC, °C (°F) | 243(469) min | 232 (450) min | 163 (325) min | 243 (469) min | |
| Naphthenics, CN (%) | 27 (avg) | 35 min | 40 min | ... | |
| Paraffinics, CP (%) | 65 min | 50 max | 45 max | ... | |
|
| |||||
| Typical Properties: | |||||
| Pour Point, °C (°F) | −12 (10) | −12 (10) | −31 (−24) | −15 (5) | |
| ASTM Color | L 3.5 | L 2.5 | L 0.5 | L 1.0 | |
| Refractive Index | 1.4848 | 1.5105 | 1.5026 | 1.4808 | |
| UV Absorbance, 260 nm | 0.8 | 4.0 | 2.2 | ... | |
| Aromatics, CA (%) | 3 | 12 | 14 | 4 | |
| Property | Method | 2005 Batch COA | 2005 Batch Current | 2012 Sample Data | 2012 Batch Average | |||
| Viscosity, cSt @99°C | 19.58 | 19.5 | 18.8 | 18.7 | 18.8 | 18.7 | 18.8 | |
| 18.8 | 18.8 | 18.9 | 18.7 | |||||
|
|
|
|
|
|
|
|
|
|
| Gravity, API @16°C | 28.6 | 28.9 | 28.9 | 28.9 | 28.8 | 28.9 | 28.9 | |
| 28.9 | 28.9 | 28.9 | 28.9 | |||||
|
|
|
|
|
|
|
|
|
|
| Flash Point COC, °C | 287 | 313 | 306 | 289 | 292 | 288 | 296 | |
| 299 | 303 | 294 | 294 | |||||
|
|
|
|
|
|
|
|
|
|
| Aniline Point, °C | 123.8 | 124.7 | 124.8 | 124.8 | 124.7 | 124.3 | 124.5 | |
| 124.8 | 124.8 | 124.9 | 124.6 | |||||
|
|
|
|
|
|
|
|
|
|
| Viscosity- Gravity Constant | 0.796 | 0.798 | 0.799 | 0.799 | 0.800 | 0.799 | 0.799 | |
| 0.799 | 0.799 | 0.799 | 0.799 | |||||
|
|
|
|
|
|
|
|
|
|
| Naphthenics, Cn% | — | 24 | 26 | 26 | 27 | 28 | 27 | |
| 26 | 26 | 27 | 29 | |||||
|
|
|
|
|
|
|
|
|
|
| Paraffinics, Cp% | 70 | 72 | 71 | 71 | 69 | 70 | 71 | |
| 71 | 71 | 71 | 70 | |||||
1.4 ASTM No. 5 Oil was accepted into Specification D5900 as an industry reference material in 2010 and designated as IRM 905. The composition, and properties of this immersion oil were not changed and the data in Table 1 remains current. Refer to Appendix X4 for other details.
1.5 The specifications and properties listed in Table 1 for IRM 901, IRM 902, IRM 903, and IRM 905 are also maintained in Specification D5900.
1.5.1 The subcommittee responsible for maintaining Test Method D471, presently D11.15, shall review the data in Specification D5900 to ensure that it is identical to that which appears in Test Method D471. This shall be accomplished at the time of the 5 year review or more frequently when necessary.
1.6 Historical, technical, and background information regarding the conversion from ASTM No. 1, ASTM No. 2, and ASTM No. 3 Oils to IRM 901, IRM 902, and IRM 903 immersion oils is maintained in Practice D5964.
1.6.1 The subcommittee responsible for maintaining Test Method D471, presently D11.15, shall review the data in Practice D5964 to ensure that it is identical to that which appears in Test Method D471. This shall be accomplished at the time of the 5 year review or more frequently when necessary.
| Change in Mass (after immersion) | Section 10 |
| Change in Volume (after immersion) | Section 11 |
| Dimensional-Change Method for Water-Insoluble Liq- | |
| Change in Mass with Liquid on One Surface Only | Section 13 |
| Determining Mass of Soluble Matter Extracted by the | |
| Change in Tensile Strength, Elongation and Hardness | |
| Change in Breaking Resistance, Burst Strength, Tear | |
| Calculation (of test results) | Section 17 |
