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Low Relaxation Pre-Stressed Concrete Steel Wire Strand
Low Relaxation Pre-Stressed Concrete Steel Wire Strand   Low Relaxation Pre-Stressed Concrete Steel Wire Strand
 
SPEC Type Grade
Diameter Tolerance
(mm)
Breaking Load
(KN)↑
Yield Strength
(KN)↑
Elongation
(%)↑
Relaxation Ratio
(%)↓
Round Area
(mm2)
Unit Weight
(kg/km)
(inch) (mm)

ASTM
A416

250

3/8

9.53

+ 0.4
- 0.4

89.0

80.1

3.5

2.5

51.61

405

7/16

11.11

120.1

108.1

69.68

548

1/2

12.7

160.1

144.1

92.90

730

3/5

15.24

240.2

216.2

139.35

1094

270

3/8

9.53

+ 0.65
- 0.15

102.3

92.1

54.84

432

7/16

11.11

137.9

124.1

74.19

582

1/2

12.7

183.7

165.3

98.71

775

3/5

15.24

260.7

234.6

140.00

1102

JIS
G3536

&

CNS
3332

SWPR
7AL

 

9.3

+ 0.4
- 0.2

88.8

75.5

3.5

2.5

51.61

405

 

10.8

120

102

69.68

546

 

12.4

160

136

92.90

729

 

15.2

240

204

138.70

1101

SWPR
7BL

 

9.5

102

86.8

54.84

432

 

11.1

138

118

74.19

580

 

12.7

183

156

98.71

774

 

15.2

261

222

138.70

1101

BS
5896

7WIRE

STAND
-ARD

 

9.3

+ 0.3
- 0.15

92

81

3.5

2.5

52

408

 

11.0

125

110

71

557

 

12.5

+ 0.4
- 0.2

164

144

93

730

 

15.2

232

204

139

1090

SUPER

 

9.6

+ 0.3
- 0.15

102

90

55

432

 

11.3

139

122

75

590

 

12.9

+ 0.4
- 0.2

186

163

100

785

 

15.7

265

233

150

1180