आयातित प्रीमियम नाइट्राइल रबर

Item

Parameter

Grade

FR-G40

FR-G50

FR-G60

FR-G70

FR-G80

       Appearance

Standard

Translucence or off-white and no impurities

Hardness/shore A

ASTM D2240

40±5

50±5

60±5

70±5

80±5

Tensile strength /MPa

ASTM D412-C

≥9.0

≥9.0

≥9.0

≥8.0

≥7.0

Elongation at break/%

ASTM D412-C

≥350

≥300

≥250

≥200

≥150

Tear strength/KN/m

ASTM D624-B

≥20

≥20

≥20

≥15

≥15

Compression set 177℃*22h

ASTM D395-B

≤20

≤20

≤20

≤20

≤20

Immersion in fuel C

23℃×70h change/%

Volume

ASTM D471

≤20

≤20

≤20

≤20

≤20

Tensile strength

<-60

<-60

<-60

<-60

<-60

Elongation

<-50

<-50

<-50

<-50

<-50

Heat Resistance Change/%(225℃*70h)

Tensile strength

ASTM D573

<-45

<-45

<-45

<-45

<-45

Elongation

ASTM D573

<-45

<-45

<-45

<-45

<-45