This document describes a method for evaluating wax hardness by measuring the depth of penetration of a standard needle into a wax specimen. This document is applicable to petroleum wax with a needle penetration value not greater than 250 1/10 mm. It can also be used to determine Fischer-Tropsch wax, synthetic wax and bio-wax, etc. However, this document does not give the precision of determining synthetic wax and bio-wax, etc.
Basic Data
Standard ID
GB/T 4985-2021 (GB/T4985-2021)
Description (Translated English)
Standard test method for needle penetration of petroleum waxes
Sector / Industry
National Standard (Recommended)
Classification of Chinese Standard
E42
Word Count Estimation
9,934
Issuing agency(ies)
State Administration for Market Regulation, China National Standardization Administration
