L P 399B 联邦规范 塑料模塑和挤出材料苯乙烯-丙烯腈共聚物(1970年3月13日)[根据ASTM D4203标准]

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上传者:战必胜
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SCOPE
L-P-399B
Novemkr 17, 1975
SUPERSEDING
Fed. Spec. L-P-399A
March 13, 1970
FEDERAL SPECIFICATION
PLASTIC MOLDING AND EXTRUSION MATERIAL,
STYRENE-ACRYLONITRILECOPOLYMERS
This specification was approved by the Commissioner,
Federal Supply Service,
General Services Administra-
tion, for the use of all Federal agencies.
AND CLASSIFICATION
1.1 Scope.
This specification covers rigid unfilled styrene-acrylonitrile
copolymer materials for injectionmolding and extrusion applications.
1.2 Classification.
1.2.1 Types and grades.
Styrene-acrylonitrilemolding and extrusion
material shall be of ,thefollowing types, grades, and classes as specified
(see 6.2):
Type I - Minimum acrylonitrile content
Type II - Median acrylonitrile content
Type 111 - Maximum acrylonitrile content
..
Grades and classes for each type shall be as follows:
Grade1 -
Flowrate 1 to 5 gramsper 10 minutes
\
Grade2 -
Flowrateabove5 gramsbut not to exceed10 gramsper
10 minutes
Grade3 -
Flow rate above10 gramsper 10 minutes
Class1 -
Generalpurpose
Class 2 -
Electrical quality
#/-
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