Hot Finished Steel Bars

* Specifications - Carbon Steel for Machine Structural Use AISI 1010, 1015, 1018, 1020 1022 1025 1045 1050 JIS G 4051 S10C, S15C, S20C,S22C, S25C, S45C,S50C BS 970 Part 1/3, 040A10, 070M20/C22, C25, C45, C50 Australia/N.Z. AS3679 250/300 - Chromium Molybdenum Steels AISI 4131, 4135, 4140,ASTM A 193 B7(*) JIS G 4105 SCM 415, SCM435, SCM440 BS 708M20, 34CrMo4, 708M40 - Spring Steels AISI 9260/5155/6150/9254 JIS G 4801 SUP7/9/10/12, BS 735A51, 685A57, DIN 55Cr3, 50CrV4, 54SiCr6 , * Characteristics Hot Rolled ( Forged ) Steel Round Bar Smooth Turned Round Bar * Dimensions Dia.(mm) Length(M) Dia Tolerance Straightness Shape 12-530 3.0-8.0 1.5% of dia. 3/1,000 Round, Hexagon, Square & Flat * Tolerances of Hot Rolled Round Bar and Square Bar Item Dimensional Tolerance Tolerances on diameter or width across flats ±1.5% with the minimum value of 0.4mm Deviation of diameteror deviation Not exceeding 70% of range of tolerance on diameter or width across flats Tolerances on length For length notexceeding 7m +40mm-0mm For length exceeding7m Add 5mm to plus side tolerance for every increase of 1m or its fraction Radius on corners(R) 10 to 20% of width across flats, as a rule Twist To be practically straight Bend Not exceeding 3mm for every 1m and not exceeding 3mm X length(m)/1m for total length