ASTM E372 is the standard test method for the determination of calcium and magnesium in magnesium ferrosilicon by ethylenediaminetetraacetic acid (EDTA) titrimetry.
ASTM E372 Standard Test Method for Determination of Calcium and Magnesium in Magnesium Ferrosilicon by EDTA Titrimetry
What is ASTM E372?
What is the Scope of ASTM E372?
The ASTM E372 test method describes the chemical analysis of magnesium ferrosilicon with the following chemical compositions:
| Elements | Composition Range, % |
| Aluminum | 2.0 max |
| Calcium | 0.25 to 3.00 |
| Carbon | 0.50 max |
| Cerium | 1.0 max |
| Chromium | 0.50 max |
| Magnesium | 2.00 to 12.00 |
| Manganese | 1.0 max |
| Silicon | 40.00 to 55.00 |
| Sulfur | 0.025 max |
| Titanium | 0.2 max |
ASTM E372 Testing Procedure and Requirements
ASTM E372 is a standard test method for determining calcium and magnesium in magnesium ferrosilicon by EDTA titration. The testing procedure includes mainly: Calcium and magnesium by the ethylenediminetetraaceticacid (EDTA) titrimetric method. This test method covers the determination of magnesium in compositions from 2% to 12% and calcium in compositions from 0.25 % to 3.0%. All users of these test methods are presumed to be qualified analysts capable of completing common laboratory operations skillfully and securely.
To separate additional elements from calcium and magnesium, ammonium hydroxide precipitation is performed after dissolving the sample in nitric and hydrofluoric acids. After adding triethanolamine and potassium cyanide to hide residual residues of iron, copper, nickel, manganese, and aluminium that may be present, calcium and magnesium are titrated in separate aliquot parts. At pH 12, disodium EDTA) is used to titrate calcium. At pH 10.0, magnesium and calcium are titrated with EDTA, and the magnesium content is estimated by subtracting the volume of EDTA used to titrate the calcium.
Data:
As per the ASTM E372-13 test procedure:
• The percentage of calcium is calculated as follows:
Calcium, % = [(A×B)/C] × 100
where:
A = EDTA solution required to titrate the calcium
B = calcium equivalent of the EDTA solution
C = sample represented in the final aliquot
• The percentage of magnesium is calculated as follows:
Magnesium, % = [{D-(A/E)} × F}]/G x100
where:
A = EDTA solution required to titrate the calcium
D = EDTA solution required to titrate the magnesium and calcium
E = 50 divided by milliliters of aliquot taken for titration of magnesium and calcium F = magnesium equivalent of the EDTA solution
G = sample represented in the final aliquot, mg.
FAQ
Where can I get the astm e372 tested?
You can share your astm e372 testing requirements with MaTestLab. MaTestLab has a vast network of material testing laboratories, spread across the USA and Canada. We support your all material testing needs ranging from specific astm e372 test to various testing techniques.
How much do I need to pay for the astm e372 test?
Please contact us for a detailed quote for your astm e372 testing needs. Cost incurred to carry out different astm e372 testing methodology depends on the type of raw material; number of samples, coupons, or specimens; test conditions, turn around time etc. Costs of some ASTM testing methods start from $100 and the final value depends upon the factors listed above. Please contact us for the best and latest prices.
How many samples are required for astm e372?
The required number of samples or specimens should comply with the procedure given in the astm e372 standard. However, the MaTestLab operations team can assist you for your special requirements once you share your testing details with us.
How much discount can I get on the astm e372 test?
MaTestLab has a vast testing laboratory network, hence we bring you the best testing facilities in a cost-effective way. We offer considerable discounts (15-20%) to our returning customers based on test volume and frequency.
How many days will it take to complete the astm e372 test?
The turnaround time for astm e372 test methodology depends upon the test procedure mentioned in the standard test document. However, we at MaTestLab understand your research requirements and hence try to get your test completed within the least possible time.
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