Пластмассы. Определение твердости. Часть 2. Твердость по Роквеллу
Название (англ.):
Plastics; Determination of hardness; Part 2 : Rockwell hardness
Описание (англ.):
Specifications of a method for the determination of the indentation hardness of plastics by means of the Rockwell hardness tester using the Rockwell M, L and R hardness scales. The Rockwell hardness number is derived from the net increase in depth of impression as the load on an indentor is increased from a fixedminor load to a major load and then returned to the same minor load. For materials having high creep and recovery, the time-factors involved in application of the major and minor loads have a considerable effect on the results of the measurements.
Заменяет стандарты:
ISO 2039 Part 2(1981.10)
Дата регистрации:
29.09.87
Дата введения:
01.07.87
Код КГС:
Л29
Код ОКСТУ:
2209
Код ОКС(МКС):
83.080.01
Код ОКП:
2209
Нормативные ссылки:
NEN-ISO 2039-2(1990/NNI), EQV*UNI 4278(1989/UNI), EQV*BS 2782 PART 3 METHOD 365C(1992/BSI), EQV*prEN ISO 2039-2-1998, EQV