Item

Experimental methods

Units

UHMWPE

PA66

PVC

PE

Steel Pipe

Average molecular weight

GB1841

1.5×106

5×105

Density

GB1033

G/Cm3

0.935

1.13-1.15

1.4

0.945

7.8

Water absorption

ASTMD-570

%

0.01

3.8

0.07-0.4

0.01

Melting Point

ISO11357.3

136

255

160

129

Heat distortion temperature0.46MPa

GB1634

85

182-224

54-73

71

Linear expansion coefficient

ASTMD-696

10-4/

1.5

0.8

1.2

Tensile strength

GB/T1040

MPa

39.2

61

40

25

Tensile yield stress

GB/T1040

MPa

22

20

Tensile elongation at break

GB/T1040

%

≥350

60-300

60-120

≥350

The impact on the Gap of simply supported beam

GB/T1043

KJ/m

Continuously

5.9-10.8

10

27

Rockwell hardness

GB/T9342

40

85-120

33

Friction coefficient

Three petrochemical Law

0.05-0.11

0.37

0.4-0.6

0.4

0.58

Wear rate

Three petrochemical Law

%

21

100

210

210

140

Scaling

Non- scaling

Scaling

Corrosion-resistant

Merit

Average

Average

Average

Average