ASTM number method

ASTM number method
ASTM standard number form:
Standard code + classification code standard serial number + year + standard English name set.
Sample:
ASTM A 331M-95 ( 1996) Standard Specification for alloy steel bar cold
Explain.
1 standard serial numbers with letters M for metric standard, without the letter M standard for imperial units.
2 years later in making brackets for standard review time.
3 A.B.C ... Says revised edition.
4 letter classification code:
A -- black metal
B -- non-ferrous metal ( copper, aluminum, powder metallurgy materials, wire etc. )
C -- cement, ceramic, concrete and masonry materials
D -- various other materials ( petroleum products, fuel, low strong plastic etc. )
E -- miscellaneous ( metal chemical analysis, fire test, nondestructive test, statistical method etc.)
F -- special purpose material ( electronic materials, cushioning materials, surgical materials etc. )
G -- material corrosion, modification and degradation