ASTM D2170/D2170M is the ASTM standard for the Standard Test Method for Kinematic Viscosity of Asphalts, providing a consistent way to evaluate how asphalt flows under specified test conditions. It is used to support reliable testing and comparison of asphalt materials in laboratory and quality-control settings. By defining a common method, the standard helps users obtain results that are more repeatable and easier to interpret for technical review and compliance work.

Purpose of ASTM D2170/D2170M

The purpose of ASTM D2170/D2170M is to establish a standardized procedure for measuring the kinematic viscosity of asphalts. This helps laboratories and material specifiers compare results using the same technical basis, which is important when evaluating consistency, handling characteristics, or acceptance criteria. As a published ASTM standard, it supports more uniform testing practices and reduces ambiguity in reporting asphalt viscosity results across different organizations, projects, or facilities.

Common use cases of ASTM D2170/D2170M

This standard is commonly used in asphalt testing laboratories, engineering quality programs, and procurement workflows where viscosity data is needed to assess material behavior. It may be referenced when reviewing asphalt samples, verifying product performance, or documenting test results for specification compliance. ASTM D2170/D2170M is also useful for organizations that need a recognized test method to support consistent evaluation of asphalt materials across routine testing and technical comparisons.

Why ASTM D2170/D2170M matters

ASTM D2170/D2170M matters because a standardized viscosity test helps improve consistency, reduce testing variability, and support informed material decisions. For buyers, labs, and engineers, it provides a common reference point for product evaluation and documentation. That can be especially important when comparing supplies, tracking quality, or meeting contractual requirements. Using a recognized ASTM method also helps reduce risk by making test results easier to defend and reproduce.

• Kinematic viscosity of asphalts
• Standardized laboratory test method
• Quality control and comparison use
• Support for specification-based evaluation
• ASTM designated technical document