{"id":2850,"date":"2023-01-04T23:36:34","date_gmt":"2023-01-04T18:06:34","guid":{"rendered":"https:\/\/rhlprofiles.com\/blog\/?p=2850"},"modified":"2023-01-04T23:36:34","modified_gmt":"2023-01-04T18:06:34","slug":"importance-of-branded-steel-manufacturer","status":"publish","type":"post","link":"https:\/\/rhlprofiles.com\/blog\/importance-of-branded-steel-manufacturer\/","title":{"rendered":"Importance of branded steel manufacturer"},"content":{"rendered":"
    \n
  1. Steel Billet of appropriate chemical composition \u2013 Right raw material procurement and selection<\/u><\/strong>.<\/li>\n
  2. Accurate rolling within close tolerances \u2013 Robust and Accurate manufacturing equipment<\/u><\/strong>.<\/li>\n
  3. Quenching under appropriate water pressure, water temperature and water volume depending on finishing mill speed, chemical parameters, size and grade of finished steel \u2013 Trained manpower<\/u><\/strong>.<\/li>\n
  4. Uniform atmospheric cooling on Automatic rake-type cooling bed \u2013 Right technology<\/u><\/strong>.<\/li>\n
  5. Testing for Mechanical, Physical properties in the laboratory \u2013 Quality Assurance<\/u><\/strong>.<\/li>\n
  6. Bundling, tagging, and dispatch as per grade and size of finished TMT Steel _ Complete customer service and satisfaction<\/u>.<\/strong><\/li>\n<\/ol>\n

     <\/p>\n

    Properties of different grades of TMT Bars<\/u><\/strong><\/p>\n

    Chemical Properties<\/u><\/strong><\/p>\n

    The analysis for various grades of steel is done as per the relevant part of IS: 228 quality standards and maximum permissible %age of constituents are as below:-<\/p>\n

     <\/p>\n\n\n\n\n\n\n\n\n
    Constituent<\/u><\/td>\nUnit<\/u><\/td>\nFe 500<\/u><\/td>\nFe 500 D<\/u><\/td>\nFe 500 S<\/u><\/td>\n<\/tr>\n
    Carbon (C)<\/td>\n% Max<\/td>\n0.30<\/td>\n0.25<\/td>\n0.25<\/td>\n<\/tr>\n
    Carbon equivalent (CE)<\/td>\n% Max<\/td>\n0.42<\/td>\n0.42<\/td>\n0.42<\/td>\n<\/tr>\n
    Sulphur (S)<\/td>\n% Max<\/td>\n0.055<\/td>\n0.040<\/td>\n0.040<\/td>\n<\/tr>\n
    Phosphorus (P)<\/td>\n% Max<\/td>\n0.055<\/td>\n0.040<\/td>\n0.040<\/td>\n<\/tr>\n
    S + P<\/td>\n% Max<\/td>\n0.105<\/td>\n0.075<\/td>\n0.075<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n
      \n
    • Where CE = C + (Mn\/6)<\/li>\n
    • Where Mn stands for Manganese<\/li>\n<\/ul>\n

       <\/p>\n

      Influence of different chemical ingredients in steel on properties of rebars<\/u><\/strong><\/p>\n\n\n\n\n\n\n\n\n
      S.N.<\/u><\/strong><\/td>\nCHEMICAL CONSTITUENT<\/u><\/strong><\/td>\nCONTROLLING PROPERTY<\/u><\/strong><\/td>\nACTUAL EFFECT<\/u><\/strong><\/td>\n<\/tr>\n
      1<\/td>\nCarbon (C)<\/td>\nHardness<\/p>\n

      Tensile Strength<\/p>\n

      Yield Strength<\/p>\n

      Weldability<\/p>\n

      Brittleness<\/p>\n

       <\/td>\n

      		Higher Carbon content upto 0.30% leads to higher tensile strength, Yield Strength, Elongation etc.. However, Carbon content greater than 0.30% makes the bar brittle and unweldable.<\/td>\n<\/tr>\n
      2<\/td>\nManganese (Mn)<\/td>\nTensile Strength<\/p>\n

      Yield Strength<\/p>\n

      Elongation<\/p>\n

      Total Elongation<\/td>\n

      		Higher Manganese content increases Tensile strength, Yield Strength, Elongation and total elongation.<\/td>\n<\/tr>\n
      3<\/td>\nSulphur<\/td>\nPresent as impurity in steel which\u00a0 increases brittleness<\/td>\nHigher Sulphur content makes the bar brittle during cold twisting and brings hot shot problem during rolling<\/td>\n<\/tr>\n
      4<\/td>\nPhosphorus (P)<\/td>\nPresent as an impurity which increases strength and brittleness<\/td>\nHigher Phosphorus content contributes to increase in strength and corrosion resistant properties but also brings brittleness to the TMT bars thereby resulting in lower life of steel.<\/td>\n<\/tr>\n
      5<\/td>\nCarbon Equivalent (CE)<\/td>\nHardness, Tensile Strength and Weldability<\/td>\nThis property is required to set the cooling para meters in TMT process and slight variation in Carbon equivalent may alter the physical property.\u00a0 Higher Carbon Equivalent > 0.42 leads \u00a0to poor weldability of the TMT bars and corresponding reduction in life of teel.<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

       <\/p>\n

       <\/p>\n

      Mechanical Properties<\/u><\/strong><\/p>\n

      All the test pieces are tested for it\u2019s mechanical properties in accordance with the IS : 1608 standard read in conjunction with IS : 2062 standards.<\/p>\n\n\n\n\n\n\n\n\n
      Properties<\/u><\/td>\nUnit<\/u><\/td>\nFe 500<\/u><\/td>\nFe 500 D<\/u><\/td>\nFe 500 S<\/u><\/td>\n<\/tr>\n
      Yield Stress (YS)<\/td>\nN\/mm\u00b2 min.<\/td>\n500<\/td>\n500<\/td>\nMin-500<\/p>\n

      Max-625<\/td>\n<\/tr>\n

      Tensile Stress (TS)<\/td>\nN\/mm\u00b2 min.<\/td>\n545<\/td>\n565<\/td>\n <\/td>\n<\/tr>\n
      Stress Ratio (TS\/YS)<\/td>\n <\/td>\n\u22651.08<\/td>\n\u22651.10<\/td>\n\u22651.25<\/td>\n<\/tr>\n
      Elongation<\/td>\n% Max<\/td>\n12<\/td>\n16<\/td>\n18<\/td>\n<\/tr>\n
      Total Elongation<\/td>\n% Max<\/td>\n–<\/td>\n5<\/td>\n8<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

       <\/p>\n

      Bend & Re-bend Test<\/u><\/strong><\/p>\n

      Bend and Re-bend Tests are performed in accordance to IS : 1599 standards.<\/p>\n

      In case of Rebend Test, the test piece is bend to an angular 135\u00b0 using mandrel of appropriate diameter as mentioned below.\u00a0 This bend piece shall be aged in boiling water (100\u00b0C for 30 minutes) and then allowed to cool.\u00a0 The steel piece is thereafter bended back to an included angle of 157.5\u00b0.<\/p>\n\n\n\n\n\n\n
      Nominal Size<\/strong><\/td>\nMandrel Diameter for Different Grades<\/u><\/strong><\/td>\n<\/tr>\n
      Fe 500<\/u><\/strong><\/td>\nFe 500 D<\/u><\/strong><\/td>\nFe 500 S<\/u><\/strong><\/td>\n<\/tr>\n
      d \u2264 10<\/td>\n5d<\/td>\n4d<\/td>\n4d<\/td>\n<\/tr>\n
      d > 10<\/td>\n7d<\/td>\n6d<\/td>\n6d<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n
        \n
      • Where d is the nominal size of the test piece in mm.<\/li>\n<\/ul>\n

        Mandrel diameter of different grades of TMT bars and sizes for bend and re-bend tests are as follows :<\/p>\n\n\n\n\n\n\n
        Nominal Size<\/strong><\/td>\nMandrel Diameter for Different Grades<\/u><\/strong><\/td>\n<\/tr>\n
        Fe 500<\/u><\/strong><\/td>\nFe 500 D<\/u><\/strong><\/td>\nFe 500 S<\/u><\/strong><\/td>\n<\/tr>\n
        d \u2264 20<\/td>\n4d<\/td>\n3d<\/td>\n3d<\/td>\n<\/tr>\n
        d > 20<\/td>\n5d<\/td>\n4d<\/td>\n4d<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n
          \n
        • Where d is the nominal size of the test piece in mm.<\/li>\n<\/ul>\n

          SAVINGS IN USE OF Fe 500 GRADE STEEL IN PLACE OF Fe 415 GRADE<\/u><\/strong><\/p>\n

          Substantial savings not only in steel consumption, steel cost but also column area can be made by replacing Fe 415 grade steel with Fe 500 grade steel.\u00a0 Heavily reinforced structures like High rise buildings, Malls, Infrastructure projects like tunnels, bridges, dams, ports, air ports etc. can be ideal locations for substantial and significant steel cost\/monetary savings for the steel user.<\/p>\n\n\n\n\n\n\n\n\n\n
          Indicative cost of Fe 415 grade steel<\/td>\nRs.47,000\/-<\/td>\n<\/tr>\n
          Indicative cost of Fe 500 grade steel<\/td>\nRs.51,000\/-<\/td>\n<\/tr>\n
          Higher Yield Strength in %<\/td>\n20%<\/td>\n<\/tr>\n
          Effective Steel cost in use of 415 grade<\/td>\nRs.47,000\/-<\/td>\n<\/tr>\n
          Effective Steel cost in use of 500 grade<\/td>\nRs.40,800\/-<\/td>\n<\/tr>\n
          Savings in steel cost<\/td>\nRs. 6,200\/-<\/td>\n<\/tr>\n
          Savings in steel consumption<\/td>\n13.19%<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n","protected":false},"excerpt":{"rendered":"

          Steel Billet of appropriate chemical composition \u2013 Right raw material procurement and selection. Accurate rolling within close tolerances \u2013 Robust and Accurate manufacturing equipment. Quenching under appropriate water pressure, water temperature and water volume depending on finishing mill speed, chemical parameters, size and grade of finished steel \u2013 Trained manpower. Uniform atmospheric cooling on Automatic […]<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_monsterinsights_skip_tracking":false,"_monsterinsights_sitenote_active":false,"_monsterinsights_sitenote_note":"","_monsterinsights_sitenote_category":0,"footnotes":""},"categories":[1],"tags":[],"table_tags":[],"class_list":["post-2850","post","type-post","status-publish","format-standard","hentry","category-uncategorized"],"aioseo_notices":[],"_links":{"self":[{"href":"https:\/\/rhlprofiles.com\/blog\/wp-json\/wp\/v2\/posts\/2850","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/rhlprofiles.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/rhlprofiles.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/rhlprofiles.com\/blog\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/rhlprofiles.com\/blog\/wp-json\/wp\/v2\/comments?post=2850"}],"version-history":[{"count":1,"href":"https:\/\/rhlprofiles.com\/blog\/wp-json\/wp\/v2\/posts\/2850\/revisions"}],"predecessor-version":[{"id":2851,"href":"https:\/\/rhlprofiles.com\/blog\/wp-json\/wp\/v2\/posts\/2850\/revisions\/2851"}],"wp:attachment":[{"href":"https:\/\/rhlprofiles.com\/blog\/wp-json\/wp\/v2\/media?parent=2850"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/rhlprofiles.com\/blog\/wp-json\/wp\/v2\/categories?post=2850"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/rhlprofiles.com\/blog\/wp-json\/wp\/v2\/tags?post=2850"},{"taxonomy":"table_tags","embeddable":true,"href":"https:\/\/rhlprofiles.com\/blog\/wp-json\/wp\/v2\/table_tags?post=2850"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}