The standard test methods for the chemical analysis of stainless, heat resisting, maraging, and other similar chromium-nickel-iron alloys are covered under the ASTM E353-93 standard test. These test methods for the chemical analysis of metals and alloys are primarily intended as referee methods to test such materials for compliance with compositional specifications.
Scope:
ASTM E353-93 standard method covers the test methods for chemical analysis of stainless heat resisting, maraging, and other similar chromium-nickel-iron alloys with chemical compositions within defined limits. The test methods in this standard are contained under the sections as follows:
| Test Methods | Sections |
| Manganese by the Periodate Spectrophotometric Method (0.01% to 5.00%) | 8 |
| Phosphorus by the Molybdenum Blue Spectrophotometric Method (0.002% to 0.35%) | 18 |
| Silicon by the Gravimetric Method (0.05% to 4.00%) | 46 |
| Cobalt by the Ion-Exchange–Potentiometric Titration Method (2% to 15%) | 53 |
| Cobalt by the Nitroso-R-Salt Spectrophotometric Method (0.01% to 5.0%) | 61 |
| Aluminium, Total, by the 8-Quinolinol Spectrophotometric Method(0.003% to 0.20%) | 71 |
| Copper by the Sulfide Precipitation-Electrodeposition Gravimetric Method(0.01% to 5.00%) | 82 |
| Tin by the Sulfide-Iodometric Titration Method (0.01% to 0.05%) | 90 |
| Copper by the Neocuproine Spectrophotometric Method (0.01% to 5.00%) | 109 |
| Aluminium, Total, by the 8-Quinolinol Gravimetric Method (0.20% to 7.00%) | 119 |
| Lead by the Ion-Exchange-Atomic Absorption Method (0.001% to 0.50%) | 127 |
| Phosphorus by the Alkalimetric Method (0.02% to 0.35%) | 164 |
| Nickel by the Dimethylglyoxime Gravimetric Method (0.1% to 48.0%) | 172 |
| Tin by the Solvent Extraction–Atomic Absorption Method (0.002% to 0.10%) | 180 |
| Molybdenum by the Spectrophotometric Method (0.01% to 1.50%) | 190 |
| Chromium by the Atomic Absorption Method (0.006% to 1.00%) | 202 |
| Chromium by the Peroxydisulfate Oxidation–Titration Method (0.10% to 35.00%) | 212 |
| Vanadium by the Atomic Absorption Method (0.006% to 0.15%) | 221 |
| Titanium, Total, by the Diantipyrylmethane Spectrophotometric Method(0.01% to 0.35%) | 231 |
| Molybdenum by the Ion Exchange–8-Hydroxyquinoline Gravimetric Method | 242 |
Results:
Nickel by the dimethylglyoxime gravimetric method- Nickel dimethylglyoximate is precipitated by adding an alcoholic solution of dimethylglyoxime to a solution of the sample containing ammonium citrate. A second precipitation is performed to purify the precipitate prior to drying and weighing. The results obtained are as follows:
| Test Material | Percent Nickel |
| High chromium steel 13 Cr | 0.241 |
| Stainless steel 18 Cr-9 Ni-25 Se | 9.44 |
| Stainless steel 19 Cr-14 Ni-3 Mo | 14.16 |
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