Figure 3.
Reference/uncoated specimens at the end of the PSA and salt–frost scaling exposures (Note: Numbers between brackets are the final visual ratings).
Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.