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ASTM D874-13a

Standard Test Method for Sulfated Ash from Lubricating Oils and Additives (Includes all amendments And changes 5/31/2018).

Automaticky přeložený název:

Standardní zkušební metoda pro Síranový popel z mazací oleje a přísady

NORMA vydána dne 1.9.2013

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Dostupnost	SKLADEM
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Informace o normě:

Označení normy: ASTM D874-13a
Poznámka: NEPLATNÁ
Datum vydání normy: 1.9.2013
Kód zboží: NS-39564
Počet stran: 5
Přibližná hmotnost: 15 g (0.03 liber)
Země: Americká technická norma
Kategorie: Technické normy ASTM

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Kategorie - podobné normy:

Maziva, průmyslové oleje a odpovídající výrobky

Anotace textu normy ASTM D874-13a :

Keywords:

additives, ash, lubricating oils, ICS Number Code 75.100 (Lubricants, industrial oils and related products)

Doplňující informace

Significance and Use

5.1 The sulfated ash can be used to indicate the concentration of known metal-containing additives in new oils. When phosphorus is absent, barium, calcium, magnesium, sodium and potassium are converted to their sulfates and tin (stannic) and zinc to their oxides (Note 4). Sulfur and chlorine do not interfere, but when phosphorus is present with metals, it remains partially or wholly in the sulfated ash as metal phosphates.

5.2 Because of above inter-element interferences, experimentally obtained sulfated ash values may differ from sulfated ash values calculated from elemental analysis. The formation of such non-sulfated species is dependent on the temperature of ashing, time ashed, and the composition of metal compounds present in oils. Hence, sulfated ash requirement generally should not be used in product specifications without a clear understanding between a buyer and a seller of the unreliability of an ash value as an indicator of the total metallic compound content.1.1 This test method covers the determination of the sulfated ash from unused lubricating oils containing additives and from additive concentrates used in compounding. These additives usually contain one or more of the following metals: barium, calcium, magnesium, zinc, potassium, sodium, and tin. The elements sulfur, phosphorus, and chlorine can also be present in combined form.

1.2 Application of this test method to sulfated ash levels below 0.02 mass % is restricted to oils containing ashless additives. The lower limit of the test method is 0.005 mass % sulfated ash.

1.3 Fatty acid methyl ester (FAME) conforming to EN 14213 and EN 14214, when tested using this test method, were shown to meet its precision.

1.4 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.

1.5 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.

2. Referenced Documents

EN 14213	Heating Fuels--Fatty Acid Methyl Esters (FAME)--Requirements and Test Methods
D6299-23a	Standard Practice for Applying Statistical Quality Assurance and Control Charting Techniques to Evaluate Analytical Measurement System Performance (Includes all amendments and changes 12/12/2023).
EN 14214	Automotive Fuels--Fatty Acid Methyl Esters (FAME) for Diesel Engines--Requirements and Test Methods
D482-19	Standard Test Method for Ash from Petroleum Products
D4057-22	Standard Practice for Manual Sampling of Petroleum and Petroleum Products
D4177-22e1	Standard Practice for Automatic Sampling of Petroleum and Petroleum Products (Includes all amendments and changes 3/24/2023).
D1193-06(2018)	Standard Specification for Reagent Water