ASTM B265· United States

Titanium Grade 2

The workhorse unalloyed titanium: guaranteed Rp0.2 275 MPa, 4.51 g/cm³, outstanding resistance to seawater and chlorides.

Used for seawater piping, heat exchangers, chemical plant and marine parts. Formable and weldable under inert gas. Weighs 57 % of steel but has about half its stiffness.

0.2 % proof strength Rp0.2: ≥ 275 MPa1guaranteed minimum
Tensile strength Rm: 390–540 MPa—guaranteed range · DIN 17860 (3.7035)
Elongation after fracture A: ≥ 22 %—guaranteed minimum · DIN 17860 (3.7035)
Density ρ: 4 510 kg/m³1nominal
Modulus of elasticity E: 105 000–120 000 MPa1guaranteed range

How we know these values · 16 values from 2 sources

Single source: 14
Trade sources only: 2
Disagreements explained: 2

Click any value under “All values” to see the sources that state it, with dates.
2 disagreements between sources, each explained under its value.
2 of 16 values (composition limits included) rest only on trade sources or none: a lead, not a reference.
How we rate evidence

What to watch

Sources disagree on modulus of elasticity; the reason is given under the value.
Not yet sourced: ASTM B265 minimum tensile strength (345 MPa) and elongation from a readable copy.

All values

Identity and composition 5
Mechanical 7
Physical 1
Thermal 2
Electrical and magnetic 1
Chemical and durability not yet

Mechanical

Elastic

Modulus of elasticity E

Young's modulus for design.

Condition	Value	Evidence
	105 000–120 000MPa	Single source1

Strength

0.2 % proof strength Rp0.2

Minimum 0.2 % proof strength.

Condition	Value	Evidence
	≥ 275MPa	Single source
	≈ 345MPatypical	Single source

Tensile strength Rm

Ultimate tensile strength. Product standards give a range or a minimum.

Condition	Value	Evidence
	≈ 485MPatypical	Single source
	390–540MPa	Trade sources only

Ductility

Elongation after fracture A

Minimum elongation; depends on gauge length and test direction.

Condition	Value	Evidence
	≈ 28%typical	Single source
	≥ 22%	Trade sources only

Physical

Density ρ

Mass per unit volume.

Condition	Value	Evidence
	4 510kg/m³	Single source

Thermal

Coefficient of thermal expansion α

Linear, near room temperature.

Condition	Value	Evidence
	≈ 8.6×10⁻⁶ /Ktypical	Single source

Thermal conductivity λ

Heat flow through 1 m of material per kelvin of temperature difference.

Condition	Value	Evidence
	≈ 21.79W/(m·K)typical	Single source

Electrical and magnetic

Electrical resistivity ρe

Resistance of a 1 m cube between opposite faces.

Condition	Value	Evidence
	≈ 5.3 × 10⁻⁷Ω·mtypical	Single source1

Chemical composition

Show on the periodic table

Maximum, %

Element	Applies to	Max %	Evidence
O	all thicknesses	0.25	Single source
N	all thicknesses	0.030	Single source
C	all thicknesses	0.080	Single source
Fe	all thicknesses	0.30	Single source
H	all thicknesses	0.015	Single source

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With any other grade

Sources here are public pages that reproduce ASTM B265. For design and acceptance, the standard edition named in your specification and the inspection certificate (EN 10204 3.1) of the delivered product take precedence. Design factors are recommended values; your National Annex may set others.