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Ti1 | 3.7025 Material Datasheet

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Material Description

Material Number Material Number (single) Standard Range of Application Standard Status Country Predecessor Application temperature [°C]
3.7025 (DIN 17862 : 2012-03) 3.7025 DIN 17862 : 2012-03 Supersedes DIN 17862 : 1993-02 Valid Germany Ti1 ≤ 300 1)
1) Remark: 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.

Chemical Composition

C [%] Fe [%] H [%] N [%] O [%]
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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
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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)]
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Toughness Data (Impact)

Semi-finished Product Condition Nominal Size [mm] Temperature [°C] Specimen Shape Specimen Direction Notch Impact Energy [J]
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Cross Reference

Material Name Country Standard
Ti PO 1 Europe AECMA 1)
T-35 France AIR 9182
TA1 Great Britain BS TA1
B348 Grade 1 USA ASTM B348
R50250 USA UNS
Titanium Grade 1 USA
Ti1 (3.7025) Germany DIN 17850
Ti99,5
Titan
1) Source: OTTO FUCHS KG, Meinerzhagen

Material Compliance

REACh RoHS
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Linear-elastic

Temperature [°C] Young's modulus [GPa] Bulk modulus [GPa] Shear modulus [GPa] Poisson's ratio
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Yield strength

Temperature [°C] 0.1% Proof strength [MPa] 0.2% Proof strength [MPa] Yield 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

WIAM Material Treatment Semi-finished product Dimension [mm] Load type Failure criteria Rolling direction Maximum stress [MPa] Strain at maximum stress [%] Source description
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Designation

Designation Material number Source
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Tensile strength

Temperature [°C] Tensile strength [MPa]
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WIAM Material Treatment Semi-finished product Dimension [mm] Load type Failure criteria Rolling direction Maximum stress [MPa] Strain at maximum stress [%] Source description
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Yield strength

Temperature [°C] 0.1% Proof strength [MPa] 0.2% Proof strength [MPa] Yield strength [MPa]
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Tensile strength

Temperature [°C] Tensile strength [MPa]
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Classification

WIAM Material Treatment Semi-finished product Dimension [mm] Load type Failure criteria Rolling direction Maximum stress [MPa] Strain at maximum stress [%] Source description
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