Jis g 3538 1994 hard drawn steel wire for prestressed concrete

UDC JAPANESE X INDUSTRIAL 669.14.018.25-426:669.14-124:; 666.982.4 STANDARD | TCSP âĐ Hard drawn steel wire for prestressed concrete JIS G 3538 » Translated and Nó-01% Published by Japanese Standards Printed in Japan Association 48 UDC JAPANESE Hard drawn steel 669.14.018.25-426:669.14-124 : 666.982.4 INDUSTRIAL wire for ` STANDARD prestressed concrete JIs G 3538-1994 Scope This Japanese Industrial Standard specifies the hard drawn steel wires for prestressed concrete (hereafter referred to as "“wires") which are applied to the prestressed concrete tanks and pipes being fabricated with steel wires being cold worked Remarks: Types, The following JIS G 3506 High JIS Z Method symbols 2.1 Types and symbols are as 2241 and standards are carbon of symbols Wires shall given in Table 1 wire rods tensile test for be Types Round Wires shall Table classified and wire in metallic materials be into two types and their mm mm symbols SWCR wire | SWCD designated as shown in Table mm mm Designations Type Designation wire deformed Standard Symbol Deformed Round this steel ‘Type Designations in designations Table 2.2 cited and 3mm wire Mechanical accordance 3.5 properties with 8.2 and mm mm Mechanical 8.3, and the 4.5 mm mm properties values of wires conform to shall Table be 3, tested G 3538-1994 fable ` sta 12.3 | 2.5 min, 12.7 16.2 | 2.5 mm 16.7 21.1 | 2.5 min, 4.5 mm 20.1 25.0 | 3.0 mm 24.0 29.9 (3.0 mm 33.3 min, 41.7 {3.0 mm 43.6 54.9 | 3.5 mm 54.4 69.1 |} 3.5 9_ mm 68.6 87.3 | 3.5 SWCR mm SWCD 3.5 mm 4 9.71 and sizes Shapes, + 4.2 Sizes and tolerances measured in accordance with with the smooth uniform surface projections Sizes and the tolerances on 8.4 and the measured values To the nominal diameters vf the deformed wire, the apply, and the tolerances on them are not specified 4.3 unit Nominal mass ` of Table sectional wires wax 4.5 ¬ tolerances 4.1 Shapes Wires shall be shaped wire shall be the one which has the or certain intervals Table % eS nis oo Relaxation value Elongation % | Tension load Proof stress giving 0.2 permanent elongation pee properties Mechanical area shall Sizes, be and as unit given tolerances, mass Nominal in Table nominal sectional and dents sizes sectional area sectional sequence to in and and unit mass Unit mass mm 3.00 £0.04 7,009 55.5 3.5 mm 3.50 +0,05 9,621 75,5 mm 4,00 +0,05 12.57 4.5 mm 4.50 +0,05 15.90 125 mm 5,00 +0,05 19.64 154 mm 6.00 20.06 28.27 222 mm 7,00 +0,06 38.48 302 mm 8.00 +0,0b0 30.27 395 mm 9.00 +0,06 63.62 499 mm deformed area area in given Size | mụn the them shall be shall conform Designation mm Tolerance | Nominal or kg/km 98.7 Table the i | { G | Ị Appearance Wires shall be free from injurious defects, extraneous matters on the surface, however, it may have rust create pitting Materials rods specified oil and other which will not Materials used for manufacturing the wires shall be the wire in JIS G 3506 or those at least equivalent to them in quality Manufacturing process Wires shall cold working (1) Wires shall be made by (2) Wires shall be free from 3538-1994 be manufactured after as follows heat-treating wire rods joints Tests 8.1 Sampling follows (1) The end coils (2) - (3) The of test of test pieces pieces one or test for coil pieces and for the the products test which of from have and from proof test a pieces taken consisting cut to be be consisting giving be shall shall lot stress shall a lot been test of short 0.2 from 30 out test The (1) Tensile test shall gripping gripping shall be piece The proof distance point and tensile considered tensile stress load be of carried 100 mm fails to invalid shall giving test % be * or shall out and the retest shall be with the to a JIS test specified shall load taken from of one five * ` % permanent end coils of as or of one a the wires same raw one coil as follows curve and % offset Z 2241 piece be with breaks requirements, required during elongation intersection of the load-elongation straight part of the curve with 0.2 The elongation of wire ends of the test piece If maximum permanent as according more meet the be be one continuously manufactured by the same machine, using the wires, one coil before cutting shall be considered to be specified in (1) and (2) Tensile (3) of elongation selected relaxation coil arbitrarily selected fraction thereof For sampling load thereof the 8.2 (2) tensile arbitrarily a fraction elongation The shall the the be line determined by fitting original guage length on the off a the tensile defined parallel at new test test, as the tests an to and the the fractured of 100 mm 8,3 Relaxation test Gripping the test piece at a proper distance at ordinary temperature, the load equivalent to 80 % of minimum proof stress of % permanent elongation specified in Table shall be applied to the test piece 10 h, shall load in about one minute, then holding the gripping distance as it is for decrease of the load shall be measured The relaxation value then be determined as a percentage of the decreased load to the initial : ; foie 4, G 3538-1994 obtain portion, dimension of Measurement 8.4 diameter maximum the In the and of measurement the diameter minimum of a arbitrary at wire wire, of dimension the Inspection 9, Mechanical properties 9,1 requirements specified in Shapes, sizes and appearance 9,2 on appearance shall be carried out to and Reinspection 9,3 test fail to to conform results the shall parties the between the to conform on the shape, size and and the results shall conform Inspection every coil, the that case In upon agreed as omitted be Relaxation test may concerned with delivery properties Mechanical of the requirements test tensile in retest 3., and may the be of which the taken from the same coil out carried out on new test piece one end each of from tional test pieces addi and n take was e piec first test sts made on If all the results of the rete lot considered two other coils of the same be l shal lot the , relaxation those as test acceptable 10, each Marking coil in (1), Symbol pieces The wires proper the of conform to which way the xơ requirements passed with the with which the inspections following shall peculiarities be marked on type (2) Designation (3) Mass (4) Identification can be checked number up (5) Manufacturer's name 11 Report or Manufacturer describing symbol number with which properties manufacturing identifying shall submit process of the product brand to of the type, designation, the manufacturing process purchaser the specifications on amount, mass, identificati l ica han mec and can be checked = ỳ