ASTM D1177-22 PDF
Name in English:
St ASTM D1177-22
Name in Russian:
Ст ASTM D1177-22
Original standard ASTM D1177-22 in PDF full version. Additional info + preview on request
Full title and description
ASTM D1177-22 — Standard Test Method for Freezing Point of Aqueous Engine Coolants. This method describes a laboratory procedure to determine the freezing point of aqueous engine coolant solutions (typically glycol- or glycerin-based) for use in product specification, quality control and performance verification.
Abstract
This test method establishes the apparatus, sample preparation and measurement procedure to produce a time–temperature cooling curve for an engine coolant sample; the freezing point is determined from the deflection or plateau on that curve. The result indicates freeze protection and can be used to estimate glycol/glycerin concentration when the glycol type is known.
General information
- Status: Active / Current
- Publication date: 2022 (current edition D1177-22; edition approved in 2022).
- Publisher: ASTM International
- ICS / categories: 71.100.45 (Refrigerants and antifreezes)
- Edition / version: D1177-22
- Number of pages: 4
Key bibliographic facts and identifiers are recorded in the official D1177-22 designation and DOI for the 2022 edition.
Scope
The standard covers the determination of the freezing point of an aqueous engine coolant solution in the laboratory. It applies to coolant concentrates and prediluted (ready-to-use) coolants prepared or sampled in accordance with Practice D1176 where applicable. The method specifies apparatus (cooling bath, freezing tube, thermometer or temperature sensor, stirring device), test procedure, and reporting conventions (SI units as standard).
Key topics and requirements
- Apparatus: cooling bath or Dewar arrangement, freezing tube, spiral stirring rod and calibrated temperature measurement (liquid-in-glass or equivalent sensor).
- Sample preparation: follow Practice D1176 for representative sampling and dilution where required.
- Procedure: generate a time–temperature cooling curve, identify the freezing plateau or the maximum temperature after supercooling, and report the freezing point accordingly.
- Reporting: freezing point in °C (SI units preferred), test conditions, sample identification and any dilution or concentration used.
- Significance: indicates freeze protection performance and provides an approximate indication of glycol/glycerin content when glycol type is known.
These requirements and test steps are specified in the D1177-22 text and its referenced documents.
Typical use and users
Used by engine coolant manufacturers, quality-control and materials testing laboratories, automotive and heavy-equipment OEMs, and regulatory or procurement bodies to verify freeze protection specifications, validate formulations, and perform acceptance testing of coolant products. Independent testing laboratories and service providers commonly perform D1177 testing as part of coolant characterization and QC test panels.
Related standards
Commonly referenced standards and practices in conjunction with D1177 include Practice D1176 (Sampling and Preparing Aqueous Solutions of Engine Coolants), Test Method D1122 (Density/Relative Density), and ASTM E1 (thermometer specification). D1177 is published under ASTM Committee D15 (Engine Coolants and Related Fluids).
Keywords
freezing point; aqueous engine coolants; antifreeze; glycol; glycerin; freeze protection; coolant testing; ASTM D1177; engine coolants; laboratory test method.
FAQ
Q: What is this standard?
A: ASTM D1177-22 is the Standard Test Method for Freezing Point of Aqueous Engine Coolants, defining how to measure the freezing point of engine coolant solutions in the laboratory.
Q: What does it cover?
A: It covers apparatus, sample preparation (with reference to Practice D1176), test procedure to obtain a cooling curve, criteria for selecting the freezing point (including handling of supercooling), and reporting requirements.
Q: Who typically uses it?
A: Engine coolant formulators, OEM engineering and QC teams, independent test laboratories, and procurement/regulatory testers use this method for product specification and acceptance testing.
Q: Is it current or superseded?
A: The designation D1177-22 is the 2022 edition of the standard; it supersedes earlier editions (for example D1177-17). Users should confirm they are using the current edition in force for their contract or regulatory requirement.
Q: Is it part of a series?
A: D1177 is part of ASTM Committee D15's suite of standards for engine coolants and related fluids (Book of Standards volume covering engine coolants); it is typically used alongside related practices and test methods such as D1176 and D1122.
Q: What are the key keywords?
A: Freezing point, aqueous engine coolants, antifreeze, glycol, glycerin, freeze protection, D1177.