ASTM E581-10 Chemical Analysis of Manganese-Copper Alloys

Scope:

ASTM E581-10 test method covers the testing of iron by the 1,10-Phenanthroline Photometric method, Manganese by the Tetraacetic Acid, and Phosphorous by the Molybdivanadophosphoric Acid Extraction Photometric Method. The stiffness of the material, recovery of the deformed portion, strain calculation, functioning, product assessment, transformation temperatures, quality control, specification acceptance, and research are dealt with in this method. This creates ease for the customer and supplier to reach an agreement. Moreover, safety and performance evaluation can be done.

Procedure:

For the determination of Iron by photometric method, the sample is mixed with HCl and OH. Methyl isobutyl ketone-benzene mixture is used to extract iron, and measurements are taken at 510 nm. In the case of Manganese determination, the sample is mixed with nitric acid, and the pH is adjusted to 10. The back titration with the standard manganese solution helps determine manganese. To determine phosphorous, the sample is mixed with nitric acid and HCl. The measurements are taken at 400 nm. 

Specimen Size:

5.0 g of hydroxylamine hydrochloride solution, 0.125g of Iron for Solution A, 50 mL of Iron for solution B, 200mL of Methyl isobutyl ketone, and 1.0 g of 1,10-phenanthroline monohydrate solution are taken for the preparation of solutions in this test method.  

Data:

The iron, manganese, and phosphorous are determined by applying different formulas in the specific conditions of temperature, pH, and concentration.