Field of Application

Prestressed concrete strands are a commonly used high-strength material in engineering. Their core advantages are high strength, low relaxation, corrosion resistance, and convenient construction. They are mainly used in large bridges, long-span buildings, precast components, and heavy-duty structures, and can effectively improve crack resistance, stiffness, and durability.

Y1670S7 1.136 4

DIA.	Tensile strength	steel area	Approx. length mass	FM	FM.max	0.1% proof load
mm	MPa	mm²	kg/1km	kN	kN	kN
15.2	1670	139	1086	232	267	204

Y1770S7G 1.137 0

DIA.	Tensile strength	steel area	Approx. length mass	FM	FM.max	0.1% proof load
mm	MPa	mm²	kg/1km	kN	kN	kN
18.0	1770	223	1742	379	436	334

Y1770S7 1.136 5

DIA.	Tensile strength	steel area	Approx. length mass	FM	FM.max	0.1% proof load
mm	MPa	mm²	kg/1km	kN	kN	kN
9.3	1770	52.0	406.1	92.0	106	81.0
11.0	1770	70.0	546.7	124	143	109
12.5	1770	93.0	726.3	165	190	145
15.7	1770	150	1172	266	306	234

Y1820S7G 1.137 1

DIA.	Tensile strength	steel area	Approx. length mass	FM	FM.max	0.1% proof load
mm	MPa	mm²	kg/1km	kN	kN	kN
15.2	1820	165	1289	300	345	264

Y1860S7 1.136 6

DIA.	Tensile strength	steel area	Approx. length mass	FM	FM.max	0.1% proof load
mm	MPa	mm²	kg/1km	kN	kN	kN
8.0	1860	38.0	296.8	70.7	81.3	62.2
9.3	1860	52.0	406.1	96.7	111	85.1
9.6	1860	55.0	429.6	102	117	89.8
11.3	1860	75.0	585.8	140	161	123
12.5	1860	93.0	726.3	173	199	152
12.9	1860	100	781.0	186	214	164
15.2	1860	139	1086.0	259	298	228
15.7	1860	150	1172.0	279	321	246

Y1860S7 1.136 6

DIA.	Tensile strength	steel area	Approx. length mass	FM	FM.max	0.1% proof load
mm	MPa	mm²	kg/1km	kN	kN	kN
12.7	1860	112	874.7	208	239	183

Max.relaxation after 1,000 hours

Initial force in percent of Min. breaking strength	Relax
%	%
70	2.5
80	3.5