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AMS 4919 – Titanium UNS R54620: High‑Strength, Heat‑Treatable Alloy

Titanium UNS R54620 is a two-phase, Alpha Beta Alloy. It is usually used in the annealed or solution treated and aged conditions. It’s a heat treatable, high strength alloy with lower toughness and ductility than Titanium Grade 5 (6Al-4V) and it’s difficult to weld. Cold forming of UNS R54620 is difficult because of its high strength. This grade can be welded by the inert gas shielded, fusion welding process but the heat effected area will have less ductility and toughness than the parent material. This grade is primarily used for airframe and jet engine parts, rocket engine cases and ordinance components.

Properties

General

PropertyValueRelated StandardsShape

Density

4.54 g/cm³

AMS 4919, AMS 4975, AMS 4976, AMS 4979, AMS T 9047, MIL-T 9046, MIL-T 9047, MIL-F-81556 MIL-F-82142, MIL-F-81556, MIL-F-82142

Bar, Billet

4.54 g/cm³

AMS 4975, AMS 4976, AMS 4919, MIL-T 9046, MIL-T 9047

Dimension

PropertyTemperatureValueRelated StandardsShapeComment

Diameter

7 mm

AMS 4919, AMS 4975, AMS 4976, AMS 4979, AMS T 9047, MIL-T 9046, MIL-T 9047, MIL-F-81556 MIL-F-82142

Bar

115 mm

AMS 4919, AMS 4975, AMS 4976, AMS 4979, AMS T 9047, MIL-T 9046, MIL-T 9047, MIL-F-81556 MIL-F-82142

Bar

130 mm

AMS 4919, AMS 4975, AMS 4976, AMS 4979, AMS T 9047, MIL-T 9046, MIL-T 9047, MIL-F-81556, MIL-F-82142

Billet

350 mm

AMS 4919, AMS 4975, AMS 4976, AMS 4979, AMS T 9047, MIL-T 9046, MIL-T 9047, MIL-F-81556, MIL-F-82142

Billet

Dimensions

15-65 mm diameter up to 6000 mm length °C

7-14.5 mm diameter up to 3000 mm length

AMS 4919, AMS 4975, AMS 4976, AMS 4979, AMS T 9047, MIL-T 9046, MIL-T 9047, MIL-F-81556 MIL-F-82142

Bar

Length

3000 mm

AMS 4919, AMS 4975, AMS 4976, AMS 4979, AMS T 9047, MIL-T 9046, MIL-T 9047, MIL-F-81556, MIL-F-82142

Billet

4500 mm

AMS 4919, AMS 4975, AMS 4976, AMS 4979, AMS T 9047, MIL-T 9046, MIL-T 9047, MIL-F-81556, MIL-F-82142

Billet

6000 mm

AMS 4919, AMS 4975, AMS 4976, AMS 4979, AMS T 9047, MIL-T 9046, MIL-T 9047, MIL-F-81556 MIL-F-82142

Bar

max

Mechanical

PropertyValueRelated StandardsShape

Elastic modulus

114 GPa

AMS 4975, AMS 4976, AMS 4919, MIL-T 9046, MIL-T 9047

118.0 GPa

AMS 4919, AMS 4975, AMS 4976, AMS 4979, AMS T 9047, MIL-T 9046, MIL-T 9047, MIL-F-81556 MIL-F-82142, MIL-F-81556, MIL-F-82142

Bar, Billet

Elongation

13.0 %

AMS 4919, AMS 4975, AMS 4976, AMS 4979, AMS T 9047, MIL-T 9046, MIL-T 9047, MIL-F-81556 MIL-F-82142, MIL-F-81556, MIL-F-82142

Bar, Billet

Hardness, Brinell

318.0

AMS 4919, AMS 4975, AMS 4976, AMS 4979, AMS T 9047, MIL-T 9046, MIL-T 9047, MIL-F-81556 MIL-F-82142, MIL-F-81556, MIL-F-82142

Bar, Billet

Hardness, Rockwell C

34.0

AMS 4919, AMS 4975, AMS 4976, AMS 4979, AMS T 9047, MIL-T 9046, MIL-T 9047, MIL-F-81556 MIL-F-82142, MIL-F-81556, MIL-F-82142

Bar, Billet

Hardness, Vickers

333.0

AMS 4919, AMS 4975, AMS 4976, AMS 4979, AMS T 9047, MIL-T 9046, MIL-T 9047, MIL-F-81556 MIL-F-82142, MIL-F-81556, MIL-F-82142

Bar, Billet

Poisson's ratio

0.325 [-]

AMS 4919, AMS 4975, AMS 4976, AMS 4979, AMS T 9047, MIL-T 9046, MIL-T 9047, MIL-F-81556 MIL-F-82142, MIL-F-81556, MIL-F-82142

Bar, Billet

Shear modulus

44.5 GPa

AMS 4919, AMS 4975, AMS 4976, AMS 4979, AMS T 9047, MIL-T 9046, MIL-T 9047, MIL-F-81556 MIL-F-82142, MIL-F-81556, MIL-F-82142

Bar, Billet

Tensile strength

996.0 MPa

AMS 4975, AMS 4976, AMS 4919, MIL-T 9046, MIL-T 9047

1110.0 MPa

AMS 4919, AMS 4975, AMS 4976, AMS 4979, AMS T 9047, MIL-T 9046, MIL-T 9047, MIL-F-81556 MIL-F-82142, MIL-F-81556, MIL-F-82142

Bar, Billet

Yield strength

827.0 MPa

AMS 4975, AMS 4976, AMS 4919, MIL-T 9046, MIL-T 9047

1050.0 MPa

AMS 4919, AMS 4975, AMS 4976, AMS 4979, AMS T 9047, MIL-T 9046, MIL-T 9047, MIL-F-81556 MIL-F-82142, MIL-F-81556, MIL-F-82142

Bar, Billet

Thermal

PropertyTemperatureValueRelated StandardsShape

Coefficient of thermal expansion

20 °C

0.0000077 1/K

AMS 4975, AMS 4976, AMS 4919, MIL-T 9046, MIL-T 9047

Melting point

1704.0 °C

AMS 4975, AMS 4976, AMS 4919, MIL-T 9046, MIL-T 9047

1705.0 °C

AMS 4919, AMS 4975, AMS 4976, AMS 4979, AMS T 9047, MIL-T 9046, MIL-T 9047, MIL-F-81556 MIL-F-82142, MIL-F-81556, MIL-F-82142

Bar, Billet

Specific heat capacity

460 J/(kg·K)

AMS 4975, AMS 4976, AMS 4919, MIL-T 9046, MIL-T 9047

Thermal conductivity

7 W/(m·K)

AMS 4919, AMS 4975, AMS 4976, AMS 4979, AMS T 9047, MIL-T 9046, MIL-T 9047, MIL-F-81556 MIL-F-82142, MIL-F-81556, MIL-F-82142

Bar, Billet

7.7 W/(m·K)

AMS 4975, AMS 4976, AMS 4919, MIL-T 9046, MIL-T 9047

Electrical

PropertyValueRelated Standards

Electrical resistivity

1.85e-06 Ω·m

AMS 4975, AMS 4976, AMS 4919, MIL-T 9046, MIL-T 9047

Chemical properties

PropertyValueRelated StandardsShape

Aluminium

5.5 - 6.5 %

AMS 4919, AMS 4975, AMS 4976, AMS 4979, AMS T 9047, MIL-T 9046, MIL-T 9047, MIL-F-81556 MIL-F-82142, MIL-F-81556, MIL-F-82142, AMS 4975, AMS 4919

Bar, Billet

Carbon

0.05

AMS 4919, AMS 4975, AMS 4976, AMS 4979, AMS T 9047, MIL-T 9046, MIL-T 9047, MIL-F-81556 MIL-F-82142, MIL-F-81556, MIL-F-82142

Bar, Billet

0.08

AMS 4975, AMS 4976, AMS 4919, MIL-T 9046, MIL-T 9047

Hydrogen

0.01

AMS 4975, AMS 4976, AMS 4919, MIL-T 9046, MIL-T 9047

0.015

AMS 4919, AMS 4975, AMS 4976, AMS 4979, AMS T 9047, MIL-T 9046, MIL-T 9047, MIL-F-81556 MIL-F-82142, MIL-F-81556, MIL-F-82142

Bar, Billet

Iron

0.25

AMS 4919, AMS 4975, AMS 4976, AMS 4979, AMS T 9047, MIL-T 9046, MIL-T 9047, MIL-F-81556 MIL-F-82142, MIL-F-81556, MIL-F-82142, AMS 4975, AMS 4919

Bar, Billet

Molybdenum

1.75 - 2.25 %

AMS 4975, AMS 4976, AMS 4919, MIL-T 9046, MIL-T 9047

1.8 - 2.2 %

AMS 4919, AMS 4975, AMS 4976, AMS 4979, AMS T 9047, MIL-T 9046, MIL-T 9047, MIL-F-81556 MIL-F-82142, MIL-F-81556, MIL-F-82142

Bar, Billet

Nitrogen

0.05

AMS 4919, AMS 4975, AMS 4976, AMS 4979, AMS T 9047, MIL-T 9046, MIL-T 9047, MIL-F-81556 MIL-F-82142, MIL-F-81556, MIL-F-82142, AMS 4975, AMS 4919

Bar, Billet

Oxygen

0.12

AMS 4919, AMS 4975, AMS 4976, AMS 4979, AMS T 9047, MIL-T 9046, MIL-T 9047, MIL-F-81556 MIL-F-82142, MIL-F-81556, MIL-F-82142, AMS 4975, AMS 4919

Bar, Billet

Silicon

0.06 - 0.1 %

AMS 4919, AMS 4975, AMS 4976, AMS 4979, AMS T 9047, MIL-T 9046, MIL-T 9047, MIL-F-81556 MIL-F-82142, MIL-F-81556, MIL-F-82142

Bar, Billet

0.1 %

AMS 4975, AMS 4976, AMS 4919, MIL-T 9046, MIL-T 9047

Tin

1.75 - 2.25 %

AMS 4975, AMS 4976, AMS 4919, MIL-T 9046, MIL-T 9047

1.8 - 2.2 %

AMS 4919, AMS 4975, AMS 4976, AMS 4979, AMS T 9047, MIL-T 9046, MIL-T 9047, MIL-F-81556 MIL-F-82142, MIL-F-81556, MIL-F-82142

Bar, Billet

Zirconium

3.5 - 4.5 %

AMS 4975, AMS 4976, AMS 4919, MIL-T 9046, MIL-T 9047

3.6 - 4.4 %

AMS 4919, AMS 4975, AMS 4976, AMS 4979, AMS T 9047, MIL-T 9046, MIL-T 9047, MIL-F-81556 MIL-F-82142, MIL-F-81556, MIL-F-82142

Bar, Billet


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