{"id":3609,"date":"2026-09-16T11:06:36","date_gmt":"2026-09-16T08:06:36","guid":{"rendered":"https:\/\/www.defencemetal.com\/index.php\/en\/ti-grade-2\/"},"modified":"2026-09-25T16:24:43","modified_gmt":"2026-09-25T13:24:43","slug":"ti-grade-2","status":"publish","type":"page","link":"https:\/\/www.defencemetal.com\/index.php\/en\/ti-grade-2\/","title":{"rendered":"Ti Grade 2"},"content":{"rendered":"

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Ti Grade 2 \/ UNS R50400 \/ AMS 4902 \/ AMS 4941<\/h1>\n
DEFENCE METAL<\/span><\/p>\n
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Ti Grade 2<\/div>\n
UNS R50400 \u00b7 W.Nr. 3.7035 \u00b7 DIN 17850 Ti 2 \u00b7 ASTM Grade 2 \u00b7 COMMERCIALLY PURE (unalloyed) titanium, alpha phase. Ceilings: O 0.25% max \u00b7 Fe 0.30% max \u00b7 N 0.03% max \u00b7 C 0.08% max \u00b7 H 0.015% max \u00b7 each other element 0.10% max \u00b7 other elements total 0.40% max \u00b7 balance Ti. It is the most widely used grade of commercially pure titanium. IT DOES NOT PRECIPITATION HARDEN AND IT DOES NOT QUENCH HARDEN: it is single-phase alpha and strength cannot be added by heat treatment.<\/div>\n
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Not to be confused with<\/div>\n

AISI 316L<\/a>Ti Grade 5<\/a>Ti Grade 1<\/a><\/div>\n<\/div>\n

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For what<\/div>\n
It is bought for welded and formed equipment where corrosion resistance and moderate strength are both required: sea-water and brackish-water heat exchangers and condensers, chlorine and chlorine dioxide lines, hypochlorite and nitric acid service, chemical process tanks and piping, desalination\u2026<\/div>\n<\/div>\n
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Forms<\/div>\n
Round bar \u00b7 flat bar \u00b7 plate \u00b7 sheet \u00b7 tube \u00b7 forgings. All forms are supplied to order.<\/div>\n<\/div>\n
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Standards<\/div>\n
AMS (verified): 4902 – sheet, strip and plate up through 25.4 mm; commercially pure, annealed, 40.0 ksi (276 MPa) yield strength \u00b7 4942 – seamless tubing, annealed, 40 ksi yield \u00b7 4941 – WELDED tubing, annealed, 40 ksi yield \u00b7 4951 – welding wire, commercially pure. No verified AMS number was found for Grade 2 BAR or FORGINGS. ASTM: B265 \/ SB-265 (strip, sheet, plate) \u00b7 B348 \/ SB-348 (bars and billets) \u00b7 B338 \/ SB-338 (condenser and heat exchanger tubes) \u00b7 B861 (seamless pipe) \u00b7 B862 (welded pipe) \u00b7 B363 (welding fittings) \u00b7 B381 Grade F-2 (forgings) \u00b7 B863 (wire) \u00b7 B367 (castings) \u00b7 F67 Grade 2 (surgical implants) \u00b7 F467 (nuts) \u00b7 F468 (bolts). EN \/ DIN: DIN 17850 Ti 2 (composition, W.Nr. 3.7035) \u00b7 DIN 17860 (sheet\/plate) \u00b7 DIN 17862 (bar) \u00b7 DIN 17864 (forgings). MIL: MIL-T-9046 \/ AMS-T-9046 CP-3 – the CP number runs OPPOSITE to the grade number. Welding: AWS A5.16 \/ SFA-5.16 ERTi-2. ASME Section IX P-No 51.
THE MIL-T-9046 \/ AMS-T-9046 CP NUMBERS RUN OPPOSITE TO THE ASTM GRADE NUMBERS: CP-1 = Grade 4 \u00b7 CP-2 = Grade 3 \u00b7 CP-3 = Grade 2 \u00b7 CP-4 = Grade 1. If an old drawing says ‘CP-1’, that is Grade 4, not Grade 1.<\/span><\/div>\n<\/div>\n
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Advantage<\/div>\n
Breadth of product forms. Grade 2 is the only one of the three grades that appears in EVERY main ASTM product form: plate (B265), bar (B348), heat exchanger tube (B338), seamless pipe (B861), welded pipe (B862), fittings (B363), forgings (B381 F-2), wire (B863) and castings (B367).<\/div>\n<\/div>\n
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Welding<\/div>\n
Filler metal: matching commercially pure rod to AWS A5.16 \/ ASME SFA-5.16 – ERTi-1 for Grade 1, ERTi-2 for Grade 2, ERTi-4 for Grade 4. Preheat is NOT required and post-weld heat treatment is not mandatory (Corrosion Materials).<\/div>\n<\/div>\n
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Limits<\/div>\n
IT DOES NOT HARDEN BY HEAT TREATMENT. There is no quenching, no solution treatment and no ageing; when a drawing calls for a hardness value, this grade is the wrong choice. FORBIDDEN BAND – ABOVE 590-620 \u00b0C IN AIR: annealing or hot forming in air above this temperature produces oxide scale and a diffused-in oxygen layer (alpha case);<\/div>\n<\/div>\n
REQUEST A QUOTE<\/a>All titanium alloys →<\/a>TECHNICAL DETAILS ↓<\/span><\/div>\n
Compiled from manufacturer data sheets \u00b7 confirm against the current specification before ordering<\/div>\n<\/div>\n<\/div>\n

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