Characteristics of Insulation & Sheath Materials

Designation

Fire Performance

VDE
code  

Abbreviations

Materials

Working Temperature
℃

Flame
Retardance

Oxygen Index

Corrosive
Gased in case of Fire

Thermoplastic compounds

Y        

PVC

Polyvinylchloride compounds

-30
+70

Self-extinguishing

23-42

Hydrogen chloride

YW  

PVC 

Heat-resistant 90℃

-20
+90

Yw  

PVC 

Heat-resistant 105℃

-20
+105

Yk   

PVC

Cold resistant

-40
+70

2Y  

LDPE

Low density polyethylene

-40
+80

Flammable

≤23

No

2Y  

HDPE

High density polyethylene

-60
+90

2X  

XLPE

Cross-linked polyethylene

-35
+90

02Y       

-

Foamed polyethylene

-40
+70

18-30

3Y   

PS  

Polystrole

-50
+80

≤23

No

4Y  

PA   

Polyamide

-20
+105

≤23

No

9Y   

PP  

Polypropylene

-20
+100

11Y 

PUR 

Polyurethane

-40
+80

20-26

Elastomeric compounds

G    

NR 

Natural rubber
SBR Styrol butadiene rubber compounds

-65
+60

Flammable

≤23

No

2G  

SIR  

Silicome rubber

-60
+180

High flash point

25-35

3G  EPR  

Ethylene propylene rubber compounds

-30
+90

Flammable

≤23

4G   

EVA 

Ethylene vinylacetate copolymer compounds

-30
+125

5G    

CR 

Polychloroprene
compounds

-40
+100

Self-extinguishing

30-35

Hydrogen chloride

6G  

CSM 

Chlorosulfonated
Polyethylene compounds

-30
+80

Fluoropolymer

10Y  

PVDF

Polyvinylidene fluoride Kynar /Dyflor

-40
+135

Self-extinguishing

40-45

7Y  

ETFE 

Ethylene Tetrafluorethylene Tefzel

-80
+155

Self-extinguishing

30-35

Yes

6Y    

FEP

Fluorine ethylene propylene Teflon

-80
+205

Self-extinguishing

>95

Yes

5YX 

PFA 

Perfluoralkoxypolymeric Teflon

-80
+240

Self-extinguishing

>95

Yes

5Y  

PTFE

Polytetraflurethylene Teflon

-80
+260

Self-extinguishing

>95

Yes

Halogen-Free compounds

H  

not cross 
linked

Halogen free
polymer compounds

-30
+70

Self-extinguishing

≤40

No

HX 

cross

linked 

Halogen free polymer compounds

-30
+90

Self-extinguishing

≤40

No

Mechanical Performace

Halogen Contenr

Weather

Tensile Strength N/mm2

Abrasion
Resistance

Weather
Resistance

Halogen-
Free

Weather
Resistance

Cold
Resistance

Thermoplastic compounds

10-30

Fair

Good

No

Fair/Good

Fair/Good

Excellent

10-20

Fair

Excellent

Yes

Good

20-30

Good

10-20

Fair

Good

5-15

-

-

Condi-tional

-

50-70

Good

Good

Yes

Fair/Good

Fair/Good

50-60

Excellent

Fair

Good

Good

20-40

Fair

Excellent

Fair

30-50

Excellent

Fair

Yes

Excellent

Excellent

Elastomeric compounds

5-10

Fair

Fair

No

Fair

Excellent

Yes

Good

Excellent

Good

5-15

Good

10-20

Fair

No

Excellent

Fair/Good

Fair

Fair

Fluoropolymer

50-80

Excellent

Excellent

No

Excellent

Excellent

40-50

Excellent

Excellent

Excellent

Excellent

10-30

Excellent

Excellent

Excellent

Excellent

20-30

Excellent

Excellent

Excellent

Excellent

70-80

Excellent

Excellent

Excellent

Excellent

Halogen-Free compounds

8-15

Fair

Conditional

Yes

Fair/Good

Fair

8-15

Fair