Ti1 | 3.7025 Material Datasheet
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| Material Number | Material Number (single) | Standard | Range of Application | Standard Status | Country | Successor | Remark | Application temperature [°C] |
|---|---|---|---|---|---|---|---|---|
| 3.7025 (DIN 17862 : 1993-02) | 3.7025 | DIN 17862 : 1993-02 | DIN 17862 : 1993-02 replaced by DIN 17862 : 2012-03 | Replaced | Germany | Ti1 | Chemical composition: DIN 17850 Ti1 (soft annealed) with the material number 3.7025 (see also Ti1, 3.7024 according to the Werkstoff- Leistungsblatt der Deutschen Luftfahrt WL 3.7024) is used acc. VdTÜV-Wbl 230-1 : 2001-12 (sheet and strip) and VdTÜV-Wbl 230-2 : 1995-06 (seamless circular tubes) and VdTÜV-Wbl 230-3 : 2001-09 (rods, wire and forgings) for pressure vessels subject to TRB 100 and AD-Merkblatt W 0, part 3.4, from - 10 to 250 °C. Furthermore the material is used for application in the nuclear power technology, as far as nuclear-engineering rules and object-related specifications admit the use from - 10 °C to 250 °C. Welding: Ti1 is weldable under use by argon (min 99.99%) with low humidity content for TIG-welding (with and without addition) and for MIG-welding. With the welding are to be protected the seam upper side as well as the root side with edge zones by suitable weld facilities against the admission of air also during the cooling under about 300 °C. Excessive hardening can occur through admission of pollutions and this can lead to an embrittlement of the weld seam. Hence, is to be paid attention to cleanness of the weld edges and edge zones as well as the addition especially. As addition a proofed blank wire of the same titanium group is to be used. A stress relieving annealing after the welding is only necessary for internal stress after the welding, possible caused by the material thickness or the constructive configuration. Corrosion resistance (acc. DIN 17850): Ti1 shows high resistance to general corrosion, especially to crevice and stress cracking corrosion, it is resistant to pitting to a large extent and has a low specific weight. The material is especially resistant to oxidizing mediums as well as to sea water and sea air. There exists resistance to nitric acid, chromic acid, sulphurous acid, alkali-lyes, ammonia, aqueous chlorides, moist chlorine gas, acetic acid, liquid hydrogen, limited resistance to sulphuric, hydrochloric, phosphoric, oxalic acid and formic acid. The material is not resistant to fluorine, dry chlorine gas and red fuming nitric acid. Processing properties: Formability: good (especially well cold-formable) Weldability: good (TIG, MIG, plasma, electron beam and resistance welding) Application: Fields of application are aircraft construction, chemical industry, petrochemistry, textile, man-made fibre and paper industry, food industry, pump and armature construction, sea water desalination plants and highly stressed components for the automobile sport. Applicable for operating temperatures of up to 300 °C. | ≤ 300 |
Mechanical Properties
| Semi-finished Product | Condition | Condition Number | Designation of the delivered Condition DIN | Strength Abbrevation | Nominal Size [mm] | Temperature [°C] | Specimen Direction | Tensile Strength [MPa] | Yield Strength (0.2% offset) [MPa] | Yield Strength (1.0% offset) [MPa] | Elongation A [%] | Reduction of Area [%] | Hardness HB | HBW | Source |
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Physical Properties
| Temperature [°C] | Density [g/cm³] | Young's Modulus [GPa] | Mean Coefficient of Thermal Expansion [10^-6*K^-1] | Thermal Conductivity [W/(m*K)] | Specific Electrical Resistance [µΩm] | Mean Specific Heat Capacity [kJ/(kg*K)] | Source |
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Young's Modulus [GPa] vs Temperature [°C]
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| Semi-finished Product | Condition | Nominal Size [mm] | Temperature [°C] | Specimen Shape | Specimen Direction | Notch Impact Energy [J] | Source | Remark |
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Cross Reference
| Material Name | Country | Standard |
|---|---|---|
| T-35 | France | AIR 9182 |
| TA1 | Great Britain | BS TA1 |
| Grade 1 | USA | ASTM B 265 |
| Grade 1 | USA | ASTM B 337 |
| Grade 1 | USA | ASTM B 338 |
| Grade 1 | USA | ASTM B 348 |
| Grade 1 | USA | ASTM B 363 |
| Grade 1 | USA | ASTM B 381 |
| Ti1 (3.7025) | Germany | DIN 17850 |
Producer/Supplier/Trade names
| Tradename | Supplier |
|---|---|
| Coralloy CP Ti-1 | Chr. Höver & Sohn GmbH & Co. KG, Lindlar |
| ERGISTAN 7025 TI | Stahlwerk Ergste Westig GmbH, Schwerte |
| Rein-Titan Gr 1 | ATI Flat Rolled Products GmbH, Remscheid |
| RMI 25 | ZAPP AG, Ratingen |
| SINOX TITAN 1 | Schoellerwerk GmbH & Co. KG, Hellenthal/Eifel |
| T2 | OTTO FUCHS KG, Meinerzhagen |
| Ti1 | ZAPP AG, Ratingen |
| TIKRUTAN RT 12 | VDM Metals GmbH, Werdohl |
| Titan 995-Titan-grade1 | VDM Metals GmbH, Werdohl |
| TITAN GR 1 | F.W. Hempel & Co. Gesellschaft für Spezial-Rostfrei-Metalle mbH, Oberhausen |
| Titan Gr.1 | Enpar Sonderwerkstoffe GmbH, Gummersbach |
| Titan Grade 1 | Chr. Höver & Sohn GmbH & Co KG, Lindlar |
Material Compliance
| REACh | RoHS |
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Ti1 (3.7025; DIN 17862 : 1993-02)
Linear-elastic
| Temperature [°C] | Young's modulus [GPa] | Poisson's ratio |
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Yield strength
| Temperature [°C] | 0.2% Proof strength [MPa] |
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Electrical resistivity
| Temperature [°C] | Specific electrical resistance [µΩm] |
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Specific heat
| Temperature [°C] | Specific heat [kJ/(kg*K)] |
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Density
| Temperature [°C] | Density [g/cm³] |
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Tensile strength
| Temperature [°C] | Tensile strength [MPa] |
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Thermal conductivity
| Temperature [°C] | Thermal conductivity [W/(m*K)] |
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Classification
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Designation
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Ti1 (soft annealed (+A); rod; 6.000-100.000mm)
Yield strength
| Temperature [°C] | 0.2% Proof strength [MPa] |
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Tensile strength
| Temperature [°C] | Tensile strength [MPa] |
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Classification
| Treatment | Semi-finished product | Dimension [mm] | Source description |
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Ti1 (soft annealed (+A))
Tensile strength
| Temperature [°C] | Tensile strength [MPa] |
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Classification
| Treatment | Source description |
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