1.1 This test method covers the determination of the corrosiveness to silver by automotive spark-ignition engine fuel, as defined by Specification D4814, or similar specifications in other jurisdictions, having a vapor pressure no greater than 124 kPa (18 psi) at 37.8°C (100°F), by one of two procedures. Procedure A involves the use of a pressure vessel, whereas Procedure B involves the use of a vented test tube.
1.2 The result of the test is based on a visual rating that is classified as an integer in the range from 0 to 4 as defined in Table 1.
1.3 The values stated in SI units are to be regarded as the standard. The values in parentheses are for information only.
1.4 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use. For specific warning statements, see 6.1 and Section 7.
TABLE 1 Silver Strip Classifications
Note 1 – Classifications provided by IP 227 Determination of Corrosiveness to Silver of Aviation Turbine Fuels–Silver Strip Method.
Note 2 – Distinctions between Classifications 1 and 2 are made using The Color Standard for Tube Deposit Rating (referenced in Test Method D3241) in accordance with 11.1.1.
| Classification | Designation | Description |
|---|---|---|
| 0 | No tarnish | Identical to a freshly polished strip, but may have some very light loss of luster |
| 1 | Slight tarnish | Faint brown or white discoloration of strip (see 12.1) |
| 2 | Moderate tarnish | Peacock colors such as blue or mauve or medium/dark straw or brown coloration (see 12.1) |
| 3 | Slight blackening | Spots and patches of black or gray on surface or uniform thin film of black deposit |
| 4 | Blackening | Uniform heavy blackening with or without scaling |
Product Details
- Published:
- 10/01/2010
- Number of Pages:
- 8
- File Size:
- 1 file , 310 KB
