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Table 50.183* z. J' z# e5 n5 I' `
Physical properties of 105°C (221°F), 90°C (194°F), 75°C (167°F), and 60°C (140°F) semirigid PVCa
* m# u7 F' T! v0 B6 a% Hinsulations and 75°C (167°F) and 60°C (140°F) jackets from CATV cables, from power-limited
* f! v/ T7 }7 U9 Kcircuit cable, from cable for power-limited fire-alarm circuits, and from other cables( r' L+ O4 y' p1 [% ~
, j! ]; s+ E+ i' N h7 nCondition of specimens at time of
! c* A- r! R1 r# @/ ameasurement3 B b0 |) R4 S4 V) ]$ Q8 q
Minimum ultimate elongation (1-inch or 25-mm" X5 a+ W6 v3 c% F) ]% A4 H! G
bench marks)b" @( D' T; P! R6 a4 p
Minimum tensile) r X( P' F. n7 a2 _
strengthb
# @, F4 P, O9 q/ Y" iUnaged 100 percent 3000 lbf/in2 or1 h1 [8 \( \* R2 A* F* ^
(1 inch or 25 mm) 20.7 MPa (MN/m2) or8 b- O p. m% c3 c4 a; p
2068 N/cm2 or; [# W- P/ n K5 h: B
2.11 kgf/mm28 d2 `) l$ R4 Q. y
Aged in a full-draft circulating-air oven for the g c- \' y$ ]0 G) v2 D) y
specified timec at the specified temperaturec, \0 C+ K$ f$ e" a3 ?4 B& I) @0 b
70 percent of the result with unaged specimensd 70 percent of the result- m% q4 v% }, R. q6 x) ]
with unaged specimensd
0 Z3 ]0 U0 L: L) E% }& |a Semirigid PVC (SRPVC) designates a partially plasticized thermoplastic compound whose characteristic constituent is
2 g6 d. u T u* B$ Dpolyvinyl chloride or a copolymer of vinyl chloride and vinyl acetate.' `/ V, e8 W2 n5 S6 @1 C, @) {* ^
b Semirigid PVC is to be tested at a speed of 2.0 ±0.2 in/min or 50 ±5 mm/min.
u% g; e, l* O, z) G$ M* c. ?( S' ?c The oven time and temperature are to be as follows:2 {+ p {& }! q0 F) b
Temperature rating of: w1 v+ N- m- G3 x: F6 l& B6 p
insulation or jacket
8 T& |' F% f) o R1 W* {Specified oven time and temperature2 T2 d% `8 f) F. o, c, v& {
h °C (°F)" _9 @+ B! q c
105°C (221°F) 168 136.0 ±1.0°C8 }0 ^* A U% c% ]; p7 y2 y
(276.8±1.8°F)
$ I3 d2 @/ Q y f q4 H# `2 R90°C (194°F) 168 121.0 ±1.0°C
+ U7 S8 N* I; |: t; c# N(249.8 ±1.8°F)9 i! s: E" s4 J9 Y- P* p
75°C (167°F) 168 113.0 ±1.0°C' e, y ]5 Y8 u/ Y2 Y
(235.4 ±1.8°F)) G! u- B! n/ i3 X- F+ a. S- X4 l. U0 F
60°C (140°F) 168 100.0 ±1.0°C
9 [9 m+ n4 x8 |0 N4 F( |(212.0 ±1.8°F)+ D8 W1 C% I' \, F) D
d As an alternative to testing for retention of tensile strength and elongation, it is appropriate to wind aged specimens of the
- S3 s1 u8 [0 |$ I( i60°C (140°F) insulation in place on the conductor onto a mandrel as described under ²Flexibility² in the applicable wire
6 C1 a$ i2 d7 ~Standard. Unaged specimens are to be tested for tensile strength and elongation. Where aged specimens that are tested for( Z1 E# O" W% j0 W. |, y
retention of tensile strength and elongation show results that do not comply, it is appropriate to use the flexibility procedure
, w8 ]0 m7 j$ {7 H% vdescribed under ²Flexibility² as a referee test. |
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