{"id":970,"date":"2026-10-09T09:21:24","date_gmt":"2026-10-09T09:21:24","guid":{"rendered":"https:\/\/daix488.sg-host.com\/?post_type=product&p=970"},"modified":"2026-10-20T07:54:38","modified_gmt":"2026-10-20T07:54:38","slug":"astm-b348-grade-12-titanium-rod-bar","status":"publish","type":"product","link":"https:\/\/www.htn-ti.com\/ar\/product\/astm-b348-grade-12-titanium-rod-bar\/","title":{"rendered":"ASTM B348 Grade 12 Titanium Rod \/ Bar"},"content":{"rendered":"\t\t
\n\t\t\t\t
\n\t\t\t\t\t
\n\t\t\t\t
\n\t\t\t\t\t

Product Overview<\/h2>\t\t\t\t<\/div>\n\t\t
\n\t\t\t\t
\n\t\t\t\t\t\t\t\t\t

ASTM B348 Grade 12 titanium rod\/bar is a Ti-0.3Mo-0.8Ni near-alpha titanium alloy bar produced and tested to ASTM B348\/B348M. The alloy is UNS R53400, with 0.20% to 0.40% molybdenum and 0.60% to 0.90% nickel. Its room-temperature microstructure is predominantly alpha with a limited beta phase fraction.<\/p>

Compared with commercially pure Grade 2, Grade 12 offers higher strength and improved corrosion performance in selected oxidizing-to-mildly-reducing, chloride-brine and crevice conditions. It is commonly supplied annealed and is selected for long-term corrosion reliability, weldability and pressure-equipment applications. Formal acceptance shall follow the contract edition, condition, dimensions and supplementary requirements.<\/p>

Grade 12 bar is suitable for chemical-process reactors and internals, heat-exchanger components, pumps, valves, flanges, fasteners, seawater and brine-system hardware, hydrometallurgical equipment, flue-gas-desulfurization equipment and corrosion-critical machined components in energy, marine and oil-and-gas service.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t

\n\t\t\t\t\t\t\t\t\t
Specification<\/strong><\/td>Details<\/strong><\/td><\/tr>
Industrial Standard<\/strong><\/td>ASTM B348<\/td><\/tr>
Industrial Grades<\/strong><\/td>Gr12<\/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
\n\t\t\t\t
\n\t\t\t\t\t

Main Characteristics<\/h3>\t\t\t\t<\/div>\n\t\t\t\t
\n\t\t\t\t\t\t\t\t\t
  • Enhanced crevice-corrosion resistance:<\/strong> Molybdenum and nickel improve corrosion stability in selected oxidizing-to-mildly-reducing, chloride-brine and hot-brine duties. Actual suitability must be verified for the service environment.<\/li>
  • Higher strength than Grade 2:<\/strong> Annealed ASTM minimum tensile strength is 483 MPa, minimum 0.2% offset yield strength is 345 MPa and minimum elongation is 18%.<\/li>
  • Good weldability:<\/strong> TIG, MIG, plasma, laser and electron-beam welding may be used with complete high-purity inert-gas shielding of the weld pool, face, root and hot heat-affected zone.<\/li>
  • Good cold and hot workability:<\/strong> The alloy can be forged, hot rolled, drawn, turned, milled, drilled, ground, bent and stamped. Complex cold forming must be qualified for bend radius, surface condition and intermediate annealing.<\/li>
  • Low density and essentially non-magnetic behavior:<\/strong> Density is about 4.51 g\/cm\u00b3, supporting corrosion-resistant lightweight equipment and some magnetic-response-sensitive uses.<\/li>
  • Not principally heat-treat strengthened:<\/strong> Grade 12 is a near-alpha titanium alloy. Annealing stabilizes microstructure, relieves stress and supports fabrication; special thermal conditions must be stated in the order and validated by an approved process.<\/li><\/ul>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t
    \n\t\t\t\t
    \n\t\t\t\t\t

    Chemical Composition<\/h3>\t\t\t\t<\/div>\n\t\t\t\t
    \n\t\t\t\t\t\t\t\t\t

    ASTM B348 Grade 12 chemistry is controlled to the following mass-percent limits:<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t

    \n\t\t\t\t\t\t\t\t\t
    Element<\/strong><\/td>ASTM B348 Grade 12 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>
    Iron, Fe<\/strong><\/td>\u22640.300%<\/td><\/tr>
    Oxygen, O<\/strong><\/td>\u22640.250%<\/td><\/tr>
    Molybdenum, Mo<\/strong><\/td>0.20%\u20130.40%<\/td><\/tr>
    Nickel, Ni<\/strong><\/td>0.60%\u20130.90%<\/td><\/tr>
    Residual elements, each<\/strong><\/td>\u22640.100%<\/td><\/tr>
    Residual elements, total<\/strong><\/td>\u22640.400%<\/td><\/tr><\/tbody><\/table><\/div>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t
    \n\t\t\t\t\t\t\t\t\t
    • Molybdenum and nickel are the defining alloying elements. Their controlled addition supports corrosion performance in designated chloride, hot-brine and mildly reducing environments.<\/li>
    • Oxygen, nitrogen, carbon, hydrogen and iron must be controlled. Oxygen, nitrogen and carbon can increase strength while reducing ductility; excessive hydrogen can form brittle hydrides and raise embrittlement risk.<\/li>
    • Final chemistry shall be confirmed by the original mill test report for the applicable heat. Any more-stringent drawing, NACE, ASME, ASTM B265\/B338\/B861 or customer requirement must be stated in the order.<\/li><\/ul>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t
      \n\t\t\t\t
      \n\t\t\t\t\t

      Mechanical Requirements<\/h3>\t\t\t\t<\/div>\n\t\t\t\t
      \n\t\t\t\t\t\t\t\t\t

      The following room-temperature tensile requirements apply to annealed ASTM B348 Grade 12 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

      \n\t\t\t\t\t\t\t\t\t
      Property<\/strong><\/td>Requirement<\/strong><\/td>Status<\/strong><\/td><\/tr>
      Ultimate tensile strength, Rm<\/strong><\/td>\u2265483 MPa<\/td>ASTM minimum<\/td><\/tr>
      0.2% offset yield strength, Rp0.2<\/strong><\/td>\u2265345 MPa<\/td>ASTM minimum<\/td><\/tr>
      Elongation in the specified gauge length<\/strong><\/td>\u226518%<\/td>ASTM minimum<\/td><\/tr>
      Reduction of area, Z<\/strong><\/td>\u226525%<\/td>ASTM minimum<\/td><\/tr><\/tbody><\/table><\/div>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t
      \n\t\t\t\t\t\t\t\t\t

      Typical room-temperature properties (not guaranteed)<\/strong><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t

      \n\t\t\t\t\t\t\t\t\t
      Property<\/strong><\/td>Reference Value<\/strong><\/td><\/tr>
      Ultimate tensile strength<\/strong><\/td>Approx. 483\u2013620 MPa<\/td><\/tr>
      0.2% offset yield strength<\/strong><\/td>Approx. 345\u2013483 MPa<\/td><\/tr>
      Elongation<\/strong><\/td>Approx. 18\u201330%<\/td><\/tr>
      Reduction of area<\/strong><\/td>Generally not less than 25%<\/td><\/tr>
      Elastic modulus<\/strong><\/td>Approx. 103\u2013105 GPa<\/td><\/tr><\/tbody><\/table><\/div>

      Important:<\/strong> Typical values are not ASTM acceptance values and are not automatically guaranteed for every lot. Hardness, UT, PMI, microstructure, corrosion testing, NACE or other tests must be ordered when required.<\/p><\/div>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t

      \n\t\t\t\t
      \n\t\t\t\t\t

      HTN Supply and Quality Services<\/h3>\t\t\t\t<\/div>\n\t\t\t\t
      \n\t\t\t\t\t\t\t\t\t

      ASTM B348 Grade 12 titanium bar is produced by evaluated, qualified mill resources. HTN confirms technical requirements from customer drawings and purchase specifications, selects a mill with appropriate capability, reviews the original MTR and heat\/lot records, and verifies the relationship among 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.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t

      \n\t\t\t\t
      \n\t\t\t\t\t

      Typical Applications<\/h3>\t\t\t\t<\/div>\n\t\t\t\t
      \n\t\t\t\t\t\t\t\t\t
      • Chemical-process reactors, vessels, agitators, tower internals and corrosion-resistant machined components;<\/li>
      • Heat exchangers, condensers, evaporators, seawater and brine heat-transfer-system components;<\/li>
      • Pump shafts, valve stems, valves, flanges, fasteners and pressure-equipment parts;<\/li>
      • Desalination, marine engineering, shipboard, hydrometallurgical, energy and oil-and-gas equipment;<\/li>
      • Flue-gas desulfurization, pollution control and other chloride-bearing or mildly reducing wet-process systems;<\/li>
      • Custom engineering parts requiring weldability, low weight and an improved margin against crevice corrosion.<\/li><\/ul>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t
        \n\t\t\t\t
        \n\t\t\t\t\t
        Request a Quote<\/div>\t\t\t\t<\/div>\n\t\t\t\t
        \n\t\t\t\t\t\t\t\t\t

        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

        \n\t\t\t\t\t\t\t
        \t\t
        \n\t\t\t\t\t
        \n\t\t\t\t\t\t
        \n\t\t\t\t\t
        \n\t\t\t
        \n\t\t\t\t\t\t
        \n\t\t\t\t\t\t\t
        \n\t\t\t\n\t\t\t\n\t\t\t\n\n\t\t\t\t\t\t\t\n\t\t\t\n\t\t\t
        \n\t\t\t\t\t\t\t\t
        \n\t\t\t\t\t\t\t\t\t\t\t\t