{"id":4369,"date":"2026-07-28T09:20:24","date_gmt":"2026-07-28T09:20:24","guid":{"rendered":"https:\/\/hontitan.com\/?post_type=product&#038;p=4369"},"modified":"2026-07-28T09:38:28","modified_gmt":"2026-07-28T09:38:28","slug":"grade-9-titanium-round-bar-ti-3al-2-5v","status":"publish","type":"product","link":"https:\/\/hontitan.com\/it\/product\/grade-9-titanium-round-bar-ti-3al-2-5v\/","title":{"rendered":"Barra tonda in titanio di grado 9 (Ti-3Al-2,5V)"},"content":{"rendered":"<p data-v-md-line=\"1\">Grade 9 titanium round bar, designation Ti-3Al-2.5V (UNS R56320), is an alpha-beta titanium alloy that occupies the performance zone between commercially pure titanium and the higher-strength Grade 5 (Ti-6Al-4V). Governed by\u00a0<strong>ASTM B348<\/strong>\u00a0and available in both annealed and cold-worked stress-relieved (CWSR) conditions, it is the primary material choice for aerospace hydraulic tubing preforms, high-performance bicycle frame blanks, and corrosion-critical industrial components.<\/p>\n<p data-v-md-line=\"3\">Mill Test Certificates to\u00a0<strong>EN 10204 3.1<\/strong>\u00a0are issued with every shipment. RFQ inquiries receive dimensional and lead-time confirmation within 24 hours.<\/p>\n<h2 data-v-md-heading=\"quick-specifications\" data-v-md-line=\"6\">Quick Specifications<\/h2>\n<table data-v-md-line=\"8\">\n<thead>\n<tr>\n<th>Parameter<\/th>\n<th>Value<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>Material<\/td>\n<td>Ti-3Al-2.5V (Grade 9), UNS R56320<\/td>\n<\/tr>\n<tr>\n<td>Standard<\/td>\n<td>ASTM B348-19 \/ AMS 4946<\/td>\n<\/tr>\n<tr>\n<td>Diameter Range<\/td>\n<td>6 mm \u2013 200 mm (0.25\u2033 \u2013 8\u2033)<\/td>\n<\/tr>\n<tr>\n<td>Length<\/td>\n<td>Up to 6,000 mm; cut-to-length available<\/td>\n<\/tr>\n<tr>\n<td>Condition<\/td>\n<td>Annealed (ANN) standard; CWSR available on request<\/td>\n<\/tr>\n<tr>\n<td>UTS (Annealed)<\/td>\n<td>\u2265 620 MPa (90 ksi) per ASTM B348<\/td>\n<\/tr>\n<tr>\n<td>Diameter Tolerance<\/td>\n<td>h9 to h11 (ground); as-forged per ASTM B348 Annex<\/td>\n<\/tr>\n<tr>\n<td>Surface Finish<\/td>\n<td>Turned, ground, or black (as-forged\/rolled)<\/td>\n<\/tr>\n<tr>\n<td>Mill Test Certificate<\/td>\n<td>EN 10204 3.1 included as standard<\/td>\n<\/tr>\n<tr>\n<td>MOQ<\/td>\n<td>[To be confirmed]<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h2 data-v-md-heading=\"what-is-grade-9-titanium-ti-3al-2-5v\" data-v-md-line=\"21\">What Is Grade 9 Titanium (Ti-3Al-2.5V)?<\/h2>\n<p data-v-md-line=\"23\">Grade 9 titanium, alloy designation Ti-3Al-2.5V (UNS R56320), is an alpha-beta titanium alloy containing nominally 3% aluminum as an alpha stabilizer and 2.5% vanadium as a beta stabilizer, offering a strength-to-weight ratio and fabricability profile that bridges commercially pure (CP) titanium grades and the high-strength aerospace Grade 5 (Ti-6Al-4V) alloy.<\/p>\n<p data-v-md-line=\"25\">The alloy is sometimes referred to in the industry as \u201chalf-6-4\u201d because its aluminum and vanadium contents are approximately half those of Ti-6Al-4V \u2014 a shorthand that reflects both its intermediate strength and its superior cold-formability relative to Grade 5. The density of 4.48 g\/cm\u00b3 is effectively the same across all titanium grades, so strength-per-unit-weight is directly set by tensile properties.<\/p>\n<p data-v-md-line=\"27\"><strong>Key characteristics:<\/strong><\/p>\n<ul data-v-md-line=\"29\">\n<li><strong>Alloy class:<\/strong>\u00a0Alpha-beta titanium (\u03b1+\u03b2 microstructure at room temperature)<\/li>\n<li><strong>UNS designation:<\/strong>\u00a0R56320<\/li>\n<li><strong>Comparable international designations:<\/strong>\u00a0DIN 3.7195 (Germany)<\/li>\n<li><strong>Standard for bar\/billet:<\/strong>\u00a0ASTM B348 \/ AMS 4946 (rounds, squares, hexagons, rectangles, and forged billet)<\/li>\n<li><strong>Standard for seamless tube:<\/strong>\u00a0ASTM B338, AMS 4943\/4944\/4945<\/li>\n<li><strong>Condition options:<\/strong>\u00a0Annealed (ANN) is standard for bar stock; CWSR is available on request (primarily a tube-stage condition per ASTM B338)<\/li>\n<\/ul>\n<blockquote data-v-md-line=\"36\">\n<p data-v-md-line=\"36\"><strong>Note on standards:<\/strong>\u00a0ASTM B348 governs\u00a0<strong>round bar and billet<\/strong>. ASTM B338 governs\u00a0<strong>seamless and welded tube<\/strong>. Engineers specifying Ti-3Al-2.5V for hydraulic tubing preforms should confirm whether the drawing callout refers to the bar standard (B348) or the finished tube standard (B338), as the required minimum properties differ between conditions.<\/p>\n<\/blockquote>\n<h2 data-v-md-heading=\"chemical-composition-astm-b348-grade-9-requirements\" data-v-md-line=\"39\">Chemical Composition \u2014 ASTM B348 Grade 9 Requirements<\/h2>\n<p data-v-md-line=\"41\">The chemical composition of Grade 9 titanium round bar is specified in\u00a0<strong>ASTM B348-19, Table 1<\/strong>. All elements are verified by the mill laboratory using optical emission spectrometry (per\u00a0<strong>ASTM E2371<\/strong>) or inert gas fusion (<strong>ASTM E1447<\/strong>\u00a0for hydrogen), with results reported on the EN 10204 3.1 Mill Test Certificate.<\/p>\n<table data-v-md-line=\"43\">\n<thead>\n<tr>\n<th>Element<\/th>\n<th>Minimum (wt%)<\/th>\n<th>Maximum (wt%)<\/th>\n<th>Role in Alloy<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>Aluminum (Al)<\/td>\n<td>2.5<\/td>\n<td>3.5<\/td>\n<td>Alpha stabilizer; strengthening<\/td>\n<\/tr>\n<tr>\n<td>Vanadium (V)<\/td>\n<td>2.0<\/td>\n<td>3.0<\/td>\n<td>Beta stabilizer; improves ductility<\/td>\n<\/tr>\n<tr>\n<td>Iron (Fe)<\/td>\n<td>\u2014<\/td>\n<td>0.25<\/td>\n<td>Interstitial impurity (controlled)<\/td>\n<\/tr>\n<tr>\n<td>Oxygen (O)<\/td>\n<td>\u2014<\/td>\n<td>0.15<\/td>\n<td>Interstitial strengthener (controlled)<\/td>\n<\/tr>\n<tr>\n<td>Carbon \u00a9<\/td>\n<td>\u2014<\/td>\n<td>0.08<\/td>\n<td>Interstitial impurity<\/td>\n<\/tr>\n<tr>\n<td>Nitrogen (N)<\/td>\n<td>\u2014<\/td>\n<td>0.03<\/td>\n<td>Interstitial impurity<\/td>\n<\/tr>\n<tr>\n<td>Hydrogen (H)<\/td>\n<td>\u2014<\/td>\n<td>0.015<\/td>\n<td>Interstitial (embrittlement risk; tightly controlled)<\/td>\n<\/tr>\n<tr>\n<td>Titanium (Ti)<\/td>\n<td>Balance<\/td>\n<td>\u2014<\/td>\n<td>Matrix<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p data-v-md-line=\"54\"><strong>Interstitial control note:<\/strong>\u00a0Oxygen, nitrogen, and hydrogen are tightly restricted because even small concentrations significantly affect ductility and fracture toughness. Hydrogen must be held below 0.015 wt% to prevent hydride-induced embrittlement during cold-drawing operations.<\/p>\n<blockquote data-v-md-line=\"56\">\n<p data-v-md-line=\"56\"><strong>Note on AMS vs ASTM limits:<\/strong>\u00a0The values above apply to\u00a0<strong>ASTM B348 bar\/billet<\/strong>. AMS tubing specifications (4943\/4944\/4945) impose stricter limits for aerospace hydraulic tubing: Carbon \u2264 0.050% (vs 0.08% in B348) and Iron \u2264 0.20% (vs 0.25% in B348). When reviewing MTCs for tubing preform stock, confirm the applicable specification with your procurement team.<\/p>\n<\/blockquote>\n<h2 data-v-md-heading=\"mechanical-properties-of-grade-9-titanium-round-bar\" data-v-md-line=\"58\">Mechanical Properties of Grade 9 Titanium Round Bar<\/h2>\n<p data-v-md-line=\"60\">Minimum tensile properties for Grade 9 titanium round bar in the\u00a0<strong>annealed condition<\/strong>\u00a0are defined in\u00a0<strong>ASTM B348-19, Table 3<\/strong>. All tensile tests are performed per\u00a0<strong>ASTM E8\/E8M<\/strong>.<\/p>\n<blockquote data-v-md-line=\"62\">\n<p data-v-md-line=\"62\"><strong>Note on CWSR condition for bar:<\/strong>\u00a0ASTM B348 primarily governs annealed bar. CWSR (cold-worked stress-relieved) mechanical minimums are more commonly cited for tube specifications (ASTM B338 \/ AMS 4944). If CWSR bar is specifically required, confirm the applicable specification and minimum properties with the mill before ordering.<\/p>\n<\/blockquote>\n<table data-v-md-line=\"64\">\n<thead>\n<tr>\n<th>Property<\/th>\n<th>Annealed (ANN) \u2014 ASTM B348<\/th>\n<th>CWSR \u2014 ASTM B338 (tubing ref.)<\/th>\n<th>Test Method<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>Ultimate Tensile Strength (UTS)<\/td>\n<td>\u2265 620 MPa (90 ksi)<\/td>\n<td>\u2265 860 MPa (125 ksi)<\/td>\n<td>ASTM E8\/E8M<\/td>\n<\/tr>\n<tr>\n<td>0.2% Offset Yield Strength (YS)<\/td>\n<td>\u2265 483 MPa (70 ksi)<\/td>\n<td>\u2265 725 MPa (105 ksi)<\/td>\n<td>ASTM E8\/E8M<\/td>\n<\/tr>\n<tr>\n<td>Elongation in 2 in. (50 mm)<\/td>\n<td>\u2265 15%<\/td>\n<td>\u2265 10%<\/td>\n<td>ASTM E8\/E8M<\/td>\n<\/tr>\n<tr>\n<td>Reduction in Area<\/td>\n<td>\u2265 25%<\/td>\n<td>\u2014<\/td>\n<td>ASTM E8\/E8M<\/td>\n<\/tr>\n<tr>\n<td>Hardness<\/td>\n<td>\u2264 30 HRB (approx.)<\/td>\n<td>\u2014<\/td>\n<td>ASTM E18<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p data-v-md-line=\"72\"><strong>Physical and thermal properties (typical):<\/strong><\/p>\n<table data-v-md-line=\"74\">\n<thead>\n<tr>\n<th>Property<\/th>\n<th>Value<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>Density<\/td>\n<td>4.48 g\/cm\u00b3 (0.162 lb\/in\u00b3)<\/td>\n<\/tr>\n<tr>\n<td>Elastic Modulus (E)<\/td>\n<td>~100 GPa (14.5 Msi)<\/td>\n<\/tr>\n<tr>\n<td>Shear Modulus (G)<\/td>\n<td>33\u201344 GPa (typical range)<\/td>\n<\/tr>\n<tr>\n<td>Poisson\u2019s Ratio<\/td>\n<td>0.35\u20130.37<\/td>\n<\/tr>\n<tr>\n<td>Melting Range<\/td>\n<td>~1590\u20131640\u00b0C (~2890\u20132980\u00b0F)<\/td>\n<\/tr>\n<tr>\n<td>Thermal Conductivity<\/td>\n<td>7.5\u20138.3 W\/m\u00b7K at 20\u00b0C<\/td>\n<\/tr>\n<tr>\n<td>Coefficient of Thermal Expansion<\/td>\n<td>~7.9\u20138.1 \u00b5m\/m\u00b7\u00b0C (20\u2013100\u00b0C)<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p data-v-md-line=\"84\"><strong>Condition selection:<\/strong>\u00a0Annealed bar is the standard choice for cold-drawn hydraulic tubing preforms \u2014 the lower yield strength allows greater cold-reduction per draw pass. CWSR is applied at the tube stage after cold drawing, not typically specified as a bar condition for round bar stock.<\/p>\n<h2 data-v-md-heading=\"available-sizes-and-dimensional-tolerances\" data-v-md-line=\"86\">Available Sizes and Dimensional Tolerances<\/h2>\n<table data-v-md-line=\"88\">\n<thead>\n<tr>\n<th>Form<\/th>\n<th>Diameter Range<\/th>\n<th>Standard Length<\/th>\n<th>Cut-to-Length<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>Round bar (turned\/ground)<\/td>\n<td>6 mm \u2013 80 mm (0.25\u2033 \u2013 3.15\u2033)<\/td>\n<td>3,000 mm \/ 6,000 mm<\/td>\n<td>Available<\/td>\n<\/tr>\n<tr>\n<td>Round bar (forged\/rolled)<\/td>\n<td>80 mm \u2013 200 mm (3.15\u2033 \u2013 8.0\u2033)<\/td>\n<td>1,500 mm \u2013 4,500 mm<\/td>\n<td>Available<\/td>\n<\/tr>\n<tr>\n<td>Billet (forged)<\/td>\n<td>200 mm \u2013 350 mm (8.0\u2033 \u2013 13.8\u2033)<\/td>\n<td>By agreement<\/td>\n<td>Available<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p data-v-md-line=\"94\"><strong>Diameter tolerances (ASTM B348-19 Annex \/ ISO 286-1):<\/strong><\/p>\n<table data-v-md-line=\"96\">\n<thead>\n<tr>\n<th>Tolerance Class<\/th>\n<th>Application<\/th>\n<th>Typical Deviation (\u00d825 mm example)<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>h9<\/td>\n<td>Precision ground bar<\/td>\n<td>0 \/ \u22120.052 mm<\/td>\n<\/tr>\n<tr>\n<td>h11<\/td>\n<td>Standard turned bar<\/td>\n<td>0 \/ \u22120.130 mm<\/td>\n<\/tr>\n<tr>\n<td>As-forged<\/td>\n<td>Large forged\/rolled bar<\/td>\n<td>Per ASTM B348 Table<\/td>\n<\/tr>\n<tr>\n<td>h6 \/ h7<\/td>\n<td>Tight tolerance (on request)<\/td>\n<td>Available; specify on RFQ<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p data-v-md-line=\"103\"><strong>Surface finishes:<\/strong>\u00a0Turned and polished (bright) \u00b7 Centerless ground \u00b7 Black\/as-forged \u00b7 Pickled<\/p>\n<p data-v-md-line=\"105\">Straightness: \u2264 3 mm per 1,000 mm unless otherwise specified.<\/p>\n<h2 data-v-md-heading=\"applications-of-ti-3al-2-5v-round-bar\" data-v-md-line=\"108\">Applications of Ti-3Al-2.5V Round Bar<\/h2>\n<p data-v-md-line=\"110\"><strong>Aerospace \u2014 Hydraulic Tubing Preforms<\/strong><br \/>\nThe largest volume application for Ti-3Al-2.5V round bar is as starting stock for cold-drawn seamless hydraulic tubing used in aircraft flight control, landing gear, and engine actuation systems. The alloy\u2019s combination of adequate strength, excellent cold-drawing response, and TIG-weldability makes it the default material for aerospace hydraulic lines per\u00a0<strong>ASTM B338<\/strong>\u00a0and\u00a0<strong>AMS 4943\/4944\/4945<\/strong>.<\/p>\n<p data-v-md-line=\"113\"><strong>Cycling and High-Performance Sports<\/strong><br \/>\nTi-3Al-2.5V round bar is drawn into thin-wall tube for bicycle frame construction. The alloy\u2019s intermediate strength allows tube wall thicknesses that produce ride compliance not achievable with Grade 5, while retaining the corrosion immunity and weight advantage of titanium over steel and aluminum.<\/p>\n<p data-v-md-line=\"116\"><strong>Chemical Processing and Industrial Equipment<\/strong><br \/>\nResistance to chloride-induced pitting and crevice corrosion, combined with strength advantage over CP titanium, makes this alloy suitable for heat exchanger tube sheets, pump shafts, valve spindles, and agitator components in aggressive chemical environments.<\/p>\n<p data-v-md-line=\"119\"><strong>Medical Device Components<\/strong><br \/>\nNon-implantable medical instruments and structural components utilize Ti-3Al-2.5V bar for sterilization compatibility, corrosion resistance in bodily-fluid-adjacent environments, and lower elastic modulus relative to stainless steel.<\/p>\n<p data-v-md-line=\"122\"><strong>Motorsport and Defense<\/strong><br \/>\nSuspension components, fastener blanks, and lightweight structural members in motorsport and tactical defense platforms benefit from the alloy\u2019s fatigue resistance and specific strength. CWSR condition is typically specified for these applications.<\/p>\n<p data-v-md-line=\"125\"><strong>Marine and Offshore<\/strong><br \/>\nSeawater-immersed hardware \u2014 fasteners, valve bodies, connector pins \u2014 where immunity to chloride corrosion and biofouling adhesion resistance justify the material cost premium over duplex stainless steel.<\/p>\n<h2 data-v-md-heading=\"grade-9-vs-grade-5-vs-grade-2-titanium-comparison-guide\" data-v-md-line=\"128\">Grade 9 vs Grade 5 vs Grade 2 Titanium \u2014 Comparison Guide<\/h2>\n<table data-v-md-line=\"130\">\n<thead>\n<tr>\n<th>Property<\/th>\n<th>Grade 2 (CP Titanium)<\/th>\n<th>Grade 9 (Ti-3Al-2.5V)<\/th>\n<th>Grade 5 (Ti-6Al-4V)<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>UTS (Annealed)<\/td>\n<td>345 MPa (50 ksi)<\/td>\n<td>620 MPa (90 ksi)<\/td>\n<td>895 MPa (130 ksi)<\/td>\n<\/tr>\n<tr>\n<td>0.2% YS (Annealed)<\/td>\n<td>275 MPa (40 ksi)<\/td>\n<td>483 MPa (70 ksi)<\/td>\n<td>828 MPa (120 ksi)<\/td>\n<\/tr>\n<tr>\n<td>Elongation<\/td>\n<td>\u2265 20%<\/td>\n<td>\u2265 15%<\/td>\n<td>\u2265 10%<\/td>\n<\/tr>\n<tr>\n<td>Density (g\/cm\u00b3)<\/td>\n<td>4.51<\/td>\n<td>4.48<\/td>\n<td>4.43<\/td>\n<\/tr>\n<tr>\n<td>Cold-drawing response<\/td>\n<td>Excellent<\/td>\n<td>Good<\/td>\n<td>Poor<\/td>\n<\/tr>\n<tr>\n<td>Weldability (TIG\/GTAW)<\/td>\n<td>Excellent<\/td>\n<td>Good<\/td>\n<td>Moderate<\/td>\n<\/tr>\n<tr>\n<td>Corrosion resistance<\/td>\n<td>Excellent<\/td>\n<td>Excellent<\/td>\n<td>Good<\/td>\n<\/tr>\n<tr>\n<td>Relative material cost<\/td>\n<td>Low<\/td>\n<td>Medium<\/td>\n<td>High<\/td>\n<\/tr>\n<tr>\n<td>Bar standard<\/td>\n<td>ASTM B348 Gr.2<\/td>\n<td>ASTM B348 Gr.9<\/td>\n<td>ASTM B348 Gr.5<\/td>\n<\/tr>\n<tr>\n<td>Typical applications<\/td>\n<td>Chemical, marine, architecture<\/td>\n<td>Hydraulic tubing, cycling, industrial<\/td>\n<td>Aerospace structure, medical implants<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p data-v-md-line=\"143\"><strong>Selection guidance:<\/strong><\/p>\n<ul data-v-md-line=\"144\">\n<li><strong>Grade 2<\/strong>\u00a0\u2014 maximum formability and weldability; strength demand \u2264 345 MPa UTS<\/li>\n<li><strong>Grade 9<\/strong>\u00a0\u2014 cold-drawing to tube or thin-wall form at moderate strength; cost-constrained relative to Grade 5<\/li>\n<li><strong>Grade 5<\/strong>\u00a0\u2014 design load requires UTS \u2265 895 MPa; high-cycle fatigue or elevated-temperature service above 260\u00b0C<\/li>\n<\/ul>\n<h2 data-v-md-heading=\"weldability-and-machinability\" data-v-md-line=\"148\">Weldability and Machinability<\/h2>\n<p data-v-md-line=\"150\"><strong>Weldability<\/strong><\/p>\n<p data-v-md-line=\"152\">Grade 9 titanium round bar is readily weldable by Gas Tungsten Arc Welding (GTAW\/TIG) without post-weld heat treatment (PWHT) in most structural applications.<\/p>\n<ul data-v-md-line=\"154\">\n<li><strong>Shielding gas:<\/strong>\u00a0Pure argon (99.999% purity minimum); trailing shield required until weld temperature drops below ~430\u00b0C (800\u00b0F)<\/li>\n<li><strong>Contamination control:<\/strong>\u00a0Solvent-clean and wire-brush with a stainless steel brush reserved exclusively for titanium<\/li>\n<li><strong>Chlorinated solvents:<\/strong>\u00a0Prohibited<\/li>\n<li><strong>Filler metal:<\/strong>\u00a0ERTi-9 per\u00a0<strong>AWS A5.16<\/strong><\/li>\n<\/ul>\n<p data-v-md-line=\"159\">Electron Beam Welding (EBW) and laser welding are used in high-specification aerospace applications where vacuum or controlled environment provides inherent atmospheric protection.<\/p>\n<p data-v-md-line=\"161\"><strong>Machinability<\/strong><\/p>\n<table data-v-md-line=\"163\">\n<thead>\n<tr>\n<th>Factor<\/th>\n<th>Recommendation<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>Cutting speed<\/td>\n<td>30\u201360 m\/min (carbide); 15\u201325 m\/min (HSS)<\/td>\n<\/tr>\n<tr>\n<td>Feed rate<\/td>\n<td>Moderate \u2014 avoid work-hardening by not dwelling<\/td>\n<\/tr>\n<tr>\n<td>Cutting fluid<\/td>\n<td>High-pressure flood coolant; soluble oil or synthetic<\/td>\n<\/tr>\n<tr>\n<td>Tool material<\/td>\n<td>Uncoated or TiAlN-coated fine-grain carbide<\/td>\n<\/tr>\n<tr>\n<td>Depth of cut<\/td>\n<td>Maintain positive engagement; light finishing passes risk rubbing<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p data-v-md-line=\"171\">Titanium\u2019s low thermal conductivity (~7.5 W\/m\u00b7K vs ~50 W\/m\u00b7K for steel) concentrates heat at the tool tip \u2014 adequate coolant flow is essential to prevent tool failure and surface contamination.<\/p>\n<h2 data-v-md-heading=\"quality-assurance-and-mill-test-certificate\" data-v-md-line=\"175\">Quality Assurance and Mill Test Certificate<\/h2>\n<p data-v-md-line=\"177\"><strong>Mill Test Certificate (MTC)<\/strong><br \/>\nEvery shipment is supported by an\u00a0<strong>EN 10204 Type 3.1<\/strong>\u00a0MTC \u2014 signed and certified by the manufacturer\u2019s inspection department, independent of production \u2014 reporting: heat\/lot number, chemical composition (all elements per ASTM B348 Table 1), mechanical test results (UTS, YS, elongation, reduction in area), hardness, heat treatment condition, applicable standards, and dimensional verification.<\/p>\n<p data-v-md-line=\"180\"><strong>Third-Party Inspection (available on request)<\/strong><\/p>\n<ul data-v-md-line=\"181\">\n<li>SGS, Bureau Veritas (BV), T\u00dcV Rheinland, or Intertek witness testing<\/li>\n<li>Supplementary reports: PMI (XRF), ultrasonic testing (UT) per ASTM E2375, dye penetrant inspection (PT), dimensional and surface finish verification<\/li>\n<\/ul>\n<p data-v-md-line=\"184\"><strong>Traceability<\/strong><\/p>\n<ul data-v-md-line=\"185\">\n<li>Heat-to-bar traceability maintained throughout all processing steps<\/li>\n<li>Each bar or bundle marked with heat number, grade, standard, and condition per ASTM B348 marking requirements<\/li>\n<\/ul>\n<h2 data-v-md-heading=\"frequently-asked-questions\" data-v-md-line=\"188\">Frequently Asked Questions<\/h2>\n<p data-v-md-line=\"190\"><strong>What is Grade 9 titanium (Ti-3Al-2.5V)?<\/strong><\/p>\n<p data-v-md-line=\"190\">Grade 9 titanium is an alpha-beta titanium alloy (UNS R56320) containing approximately 3% aluminum and 2.5% vanadium. It offers intermediate strength between commercially pure CP titanium (Grade 2) and the high-strength Grade 5 (Ti-6Al-4V), combined with good cold-drawing response and TIG weldability. The governing standard for round bar and billet is\u00a0<strong>ASTM B348<\/strong>.<\/p>\n<p data-v-md-line=\"193\"><strong>What are the mechanical properties of Grade 9 titanium round bar per ASTM B348?<\/strong><\/p>\n<p data-v-md-line=\"193\">In the annealed condition (ASTM B348): UTS \u2265 620 MPa (90 ksi), 0.2% yield strength \u2265 483 MPa (70 ksi), elongation \u2265 15%. CWSR minimums apply primarily to tube specifications (ASTM B338): UTS \u2265 860 MPa (125 ksi), yield strength \u2265 725 MPa (105 ksi), elongation \u2265 10%.<\/p>\n<p data-v-md-line=\"196\"><strong>How does Grade 9 compare to Grade 5 (Ti-6Al-4V)?<\/strong><\/p>\n<p data-v-md-line=\"196\">Grade 9 has roughly 30% lower tensile strength than Grade 5 (620 MPa vs 895 MPa), but significantly better cold-formability and weldability. Grade 9 is the preferred choice when the part will be further cold-drawn to tube form, or when fabrication requirements (TIG welding without PWHT) favor a more ductile alloy. Grade 5 is specified when the design load requires strength \u2265 895 MPa.<\/p>\n<p data-v-md-line=\"199\"><strong>Is Grade 9 titanium weldable?<\/strong><\/p>\n<p data-v-md-line=\"199\">Yes. Ti-3Al-2.5V is readily weldable by GTAW\/TIG using ERTi-9 filler wire (per AWS A5.16) and pure argon shielding. Post-weld heat treatment is not required for most applications. Atmospheric contamination during welding must be prevented by trailing shielding until the weld cools below approximately 430\u00b0C.<\/p>\n<p data-v-md-line=\"202\"><strong>What standard governs Grade 9 titanium round bar?<\/strong><\/p>\n<p data-v-md-line=\"202\">The primary standard for Ti-3Al-2.5V round bar and billet is\u00a0<strong>ASTM B348<\/strong>. The aerospace bar, wire, and extrusion specification is\u00a0<strong>AMS 4946<\/strong>. Note:\u00a0<strong>ASTM B338<\/strong>\u00a0and\u00a0<strong>AMS 4943\/4944\/4945<\/strong>\u00a0govern seamless tube of the same alloy and should not be specified for bar form.<\/p>\n<p data-v-md-line=\"205\"><strong>What diameter range is available?<\/strong><\/p>\n<p data-v-md-line=\"205\">Standard inventory covers 6 mm to 80 mm (0.25\u2033 to 3.15\u2033) in turned\/ground finish and 80 mm to 200 mm (up to 8.0\u2033) in forged\/rolled form. Billet up to 350 mm diameter is available by arrangement. Custom diameters and tight tolerance (h6\/h7) are available on request.<\/p>\n<p data-v-md-line=\"208\"><strong>Do you provide a Mill Test Certificate?<\/strong><\/p>\n<p data-v-md-line=\"208\">Yes. Every shipment includes an\u00a0<strong>EN 10204 Type 3.1<\/strong>\u00a0MTC covering full chemical composition and mechanical test results traceable to the specific heat\/lot. Third-party inspection reports (SGS, BV, T\u00dcV) can be arranged on request.<\/p>\n","protected":false},"excerpt":{"rendered":"<p data-v-md-line=\"1\">Per ricevere un preventivo formale relativo alla barra tonda in titanio Ti-3Al-2,5V di grado 9, si prega di indicare quanto segue nella richiesta di preventivo:<\/p>\n<ul data-v-md-line=\"3\">\n<li>Diametro (mm o pollici)<\/li>\n<li>Requisiti relativi alla lunghezza o al taglio a misura<\/li>\n<li>Stato (ricotto o CWSR)<\/li>\n<li>Classe di tolleranza (h9, h11 o personalizzata)<\/li>\n<li>Quantit\u00e0 (kg o pezzi)<\/li>\n<li>Documentazione richiesta (EN 10204 3.1 MTC, ispezione da parte di terzi, ecc.)<\/li>\n<li>Condizioni di consegna (Incoterms)<\/li>\n<\/ul>","protected":false},"featured_media":4373,"template":"","meta":[],"product_brand":[],"product_cat":[15,38],"product_tag":[],"class_list":["post-4369","product","type-product","status-publish","has-post-thumbnail","product_cat-titanium-mill-products","product_cat-titanium-bars","first","instock","shipping-taxable","product-type-simple"],"_links":{"self":[{"href":"https:\/\/hontitan.com\/it\/wp-json\/wp\/v2\/product\/4369","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/hontitan.com\/it\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/hontitan.com\/it\/wp-json\/wp\/v2\/types\/product"}],"version-history":[{"count":3,"href":"https:\/\/hontitan.com\/it\/wp-json\/wp\/v2\/product\/4369\/revisions"}],"predecessor-version":[{"id":4372,"href":"https:\/\/hontitan.com\/it\/wp-json\/wp\/v2\/product\/4369\/revisions\/4372"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/hontitan.com\/it\/wp-json\/wp\/v2\/media\/4373"}],"wp:attachment":[{"href":"https:\/\/hontitan.com\/it\/wp-json\/wp\/v2\/media?parent=4369"}],"wp:term":[{"taxonomy":"product_brand","embeddable":true,"href":"https:\/\/hontitan.com\/it\/wp-json\/wp\/v2\/product_brand?post=4369"},{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/hontitan.com\/it\/wp-json\/wp\/v2\/product_cat?post=4369"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/hontitan.com\/it\/wp-json\/wp\/v2\/product_tag?post=4369"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}