{"id":951,"date":"2026-10-09T07:18:33","date_gmt":"2026-10-09T07:18:33","guid":{"rendered":"https:\/\/daix488.sg-host.com\/?post_type=product&p=951"},"modified":"2026-10-20T07:50:11","modified_gmt":"2026-10-20T07:50:11","slug":"astm-b348-grade-2-titanium-bar","status":"publish","type":"product","link":"https:\/\/www.htn-ti.com\/ar\/product\/astm-b348-grade-2-titanium-bar\/","title":{"rendered":"ASTM B348 Grade 2 Titanium Bar"},"content":{"rendered":"\t\t
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Product Overview<\/h2>\t\t\t\t<\/div>\n\t\t
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ASTM B348 Grade 2 titanium bar is an unalloyed, commercially pure titanium bar produced and tested to ASTM B348\/B348M. Its UNS designation is R50400. Material performance is developed by controlling oxygen, iron, nitrogen, carbon and hydrogen, together with hot working, annealing and grain condition.<\/p>

Grade 2 is one of the most widely used commercially pure titanium grades. It is stronger than Grade 1 while retaining better ductility and forming capability than Grades 3 and 4. This balance of strength, elongation, weldability and corrosion resistance makes Grade 2 the general-purpose workhorse of commercially pure titanium.<\/p>

Grade 2 bar is used for corrosion-resistant fasteners, shafts, valve stems, flanges, connectors, electrode components and heat-exchanger parts in chemical processing, desalination, marine, chlor-alkali, electroplating, energy and general industrial equipment.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t

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Specification<\/strong><\/td>Details<\/strong><\/td><\/tr>
Industrial Standard<\/strong><\/td>ASTM B348<\/td><\/tr>
Industrial Grades<\/strong><\/td>Gr2<\/td><\/tr>
Diameter Range<\/strong><\/td>\u00d87 \u2013 \u00d8300 mm<\/td><\/tr>
Typical Diameters<\/strong><\/td>\u00d87, 8, 10, 12, 14, 16, 18, 20, 25, 30, 35, 40, 45, 50, 60, 70, 80, 90, 100, 120, 150, 200 mm<\/td><\/tr>
Typical Industrial Bar Length<\/strong><\/td>200\u20133000 mm; cut-to-length available<\/td><\/tr>
Surface \/ Supply Condition<\/strong><\/td>Hot-rolled black surface \/ Turned \/ Ground<\/td><\/tr>
Precision Tolerance<\/strong><\/td>h6 \/ h7 \/ h8 available subject to diameter, finishing process and order confirmation<\/td><\/tr><\/tbody><\/table><\/div>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t
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Main Characteristics<\/h3>\t\t\t\t<\/div>\n\t\t\t\t
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  • Balanced strength and ductility:<\/strong> The room-temperature minimum tensile strength is 345 MPa and minimum specified elongation is 20%, supporting moderate-strength applications with useful plasticity.<\/li>
  • Excellent corrosion resistance:<\/strong> A continuous, adherent titanium-oxide passive film forms naturally and can repassivate when oxygen or moisture is present.<\/li>
  • High strength-to-weight potential:<\/strong> Density is approximately 4.51 g\/cm\u00b3, substantially below that of ordinary steel.<\/li>
  • Good hot and cold workability:<\/strong> Grade 2 may be forged, rolled, extruded, drawn, bent, stamped, spun and machined.<\/li>
  • Good weldability:<\/strong> TIG, MIG, plasma, laser and electron-beam processes may be used with complete inert-gas protection of all hot metal.<\/li>
  • Good low-temperature behavior:<\/strong> CP titanium retains useful ductility and toughness at low temperatures.<\/li>
  • Essentially non-magnetic:<\/strong> This can be useful in equipment sensitive to magnetic response.<\/li>
  • Not significantly strengthened by conventional heat treatment:<\/strong> Annealing is used mainly for stress relief, ductility recovery and microstructural stabilization.<\/li><\/ul>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t
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    Chemical Composition<\/h3>\t\t\t\t<\/div>\n\t\t\t\t
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    ASTM B348 Grade 2 chemistry is controlled to the following mass-percent limits:<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t

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    Element<\/strong><\/td>ASTM B348 Grade 2 requirement<\/strong><\/td><\/tr>
    Nitrogen, N<\/strong><\/td>\u22640.030%<\/td><\/tr>
    Carbon, C<\/strong><\/td>\u22640.080%<\/td><\/tr>
    Hydrogen, H<\/strong><\/td>\u22640.015%<\/td><\/tr>
    Oxygen, O<\/strong><\/td>\u22640.250%<\/td><\/tr>
    Iron, Fe<\/strong><\/td>\u22640.300%<\/td><\/tr>
    Residual elements, each<\/strong><\/td>\u22640.100%<\/td><\/tr>
    Residual elements, total<\/strong><\/td>\u22640.400%<\/td><\/tr>
    Titanium, Ti<\/strong><\/td>Balance<\/td><\/tr><\/tbody><\/table><\/div>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t
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    Technical references: ASTM B348\/B348M and TIMETAL 50A, a material corresponding to ASTM Grade 2.<\/p>

    • Oxygen and iron:<\/strong> Important strength-controlling elements in CP titanium; higher levels generally increase strength and hardness but may reduce ductility and formability.<\/li>
    • Hydrogen:<\/strong> Must be controlled because excessive pickup can form brittle hydrides and increase embrittlement risk.<\/li>
    • Titanium content:<\/strong> ASTM states Titanium: Balance. Grade 2 should not be simplified to a fixed claim such as \u201cTi \u226599.5%.\u201d<\/li>
    • Lot acceptance:<\/strong> Final chemistry shall be confirmed by the original mill test report for the applicable heat.<\/li><\/ul>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t
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      Mechanical Requirements<\/h3>\t\t\t\t<\/div>\n\t\t\t\t
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      The following room-temperature tensile requirements apply to annealed ASTM B348 Grade 2 bar. The specified edition, dimensions, specimen form and test orientation must also be considered for formal acceptance.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t

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      Property<\/strong><\/td>Requirement<\/strong><\/td>Status<\/strong><\/td><\/tr>
      Ultimate tensile strength, Rm<\/strong><\/td>\u2265345 MPa<\/td>ASTM minimum<\/td><\/tr>
      0.2% offset yield strength, Rp0.2<\/strong><\/td>\u2265275 MPa<\/td>ASTM minimum<\/td><\/tr>
      Elongation in the specified gauge length<\/strong><\/td>\u226520%<\/td>ASTM minimum<\/td><\/tr>
      Reduction of area<\/strong><\/td>\u226530%<\/td>ASTM minimum<\/td><\/tr><\/tbody><\/table><\/div>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t
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      Typical Room-Temperature Properties (Not Guaranteed)<\/strong><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t

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      Property<\/strong><\/td>Reference Value<\/strong><\/td><\/tr>
      Ultimate tensile strength<\/strong><\/td>Approx. 485 MPa<\/td><\/tr>
      0.2% offset yield strength<\/strong><\/td>Approx. 345 MPa<\/td><\/tr>
      Elongation<\/strong><\/td>Approx. 28%<\/td><\/tr>
      Reduction of area<\/strong><\/td>Approx. 57%<\/td><\/tr>
      Elastic modulus<\/strong><\/td>Approx. 105\u2013120 GPa<\/td><\/tr>
      Typical bend radius<\/strong><\/td>Approx. 2.5T, dependent on condition and thickness<\/td><\/tr><\/tbody><\/table><\/div>

      Important:<\/strong> Typical data are not ASTM acceptance values and are not automatically guaranteed for every lot. Hardness is not a universal core acceptance criterion for ASTM B348 Grade 2. If hardness, fatigue or bend performance is required, it should be stated separately in the purchase order.<\/p><\/div>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t

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      HTN Supply and Quality Services<\/h3>\t\t\t\t<\/div>\n\t\t\t\t
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      ASTM B348 Grade 2 titanium bar is produced by evaluated, qualified mill resources. HTN confirms technical requirements from customer drawings and purchase specifications, selects a mill with the appropriate capability, reviews the original MTR and heat\/lot records, and verifies the relationship among the material standard, dimensions, quantity, condition and inspection documents.<\/p>

      When agreed in the contract, HTN can coordinate independent retesting, ultrasonic examination, PMI, cut-to-length service, turning or grinding, EN 10204 3.1 documentation and third-party inspection, together with export packing, shipping documents and international delivery.\u00a0<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t

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      Typical Applications<\/h3>\t\t\t\t<\/div>\n\t\t\t\t
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      • Shafts, valve stems, flanges, fasteners and connectors for chemical equipment;<\/li>
      • Components for heat exchangers, condensers, evaporators and reactors;<\/li>
      • Desalination, shipboard and marine-engineering equipment;<\/li>
      • Pump shafts, supports and corrosion-resistant machined parts;<\/li>
      • Chlor-alkali, electroplating and electrochemical equipment;<\/li>
      • Petrochemical, energy and general industrial equipment;<\/li>
      • Non-high-strength aircraft brackets, duct accessories and secondary structures;<\/li>
      • Engineering parts requiring a balance of light weight, corrosion resistance and moderate strength.<\/li><\/ul>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t
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        Request a Quote<\/div>\t\t\t\t<\/div>\n\t\t\t\t
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        Fill in the form below and our team will be happy to assist you<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t

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