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 MethodsSections
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 Method242
 

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 MaterialPercent Nickel
High chromium steel 13 Cr0.241
Stainless steel 18 Cr-9 Ni-25 Se9.44
Stainless steel 19 Cr-14 Ni-3 Mo14.16

 


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