AMS 4981B Grade R56260

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Description

Titanium UNS R56260 is an Alpha-Beta Alloy and it’s generally regarded as the workhorse alloy of the titanium industry. The alloy is fully heat-treatable in section sizes up to one inch and is used up to approximately 400°C (750°F). Since it is one of the most commonly used alloys (over 70% of all alloy grades melted are a sub-grade of Ti-6-4,) its uses span many aerospace engine and airframe components. Titanium UNS R56260 is also used in lots of non-aerospace applications such as marine, offshore and power generation industries. This Alpha-Beta Alloy combines good corrosion resistance and strength with weldability and fabricability. The alloy is generally available in bar form and it’s typically used in deep sour well applications. This alloy can be hot or cold formed.

Related Standards

This material data has been provided by VSMPO,Matmatch,RMI Titanium Co.

All metrics apply to room temperature unless otherwise stated. SI units used unless otherwise stated.
Equivalent standards are similar to one or more standards provided by the supplier. Some equivalent standards may be stricter whereas others may be outside the bounds of the original standard.

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Properties

General

PropertyValueShapeRelated Standards

Density

4.65 g/cm³

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Bar, Billet

4.65 g/cm³

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AMS 4981B, MIL-T 9047G

Dimension

PropertyTemperatureValueShapeComment

Diameter

7 mm

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Bar

115 mm

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Bar

130 mm

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Billet

350 mm

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Billet

Dimensions

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

7-14.5 mm diameter up to 3000 mm length

Bar

Length

3000 mm

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Billet

4500 mm

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Billet

6000 mm

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Bar

max

Mechanical

PropertyValueShapeRelated Standards

Elastic modulus

114.0 GPa

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Bar, Billet

114 GPa

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AMS 4981B, MIL-T 9047G

Elongation

13.0 %

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Bar, Billet

Hardness, Brinell

360.0

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Bar, Billet

Hardness, Rockwell C

39.0 [-]

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Bar, Billet

Hardness, Vickers

376.0

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Bar, Billet

Poisson's ratio

0.33 [-]

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Bar, Billet

Shear modulus

42.9 GPa

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Bar, Billet

Tensile strength

1172.0 MPa

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AMS 4981B, MIL-T 9047G

1210.0 MPa

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Bar, Billet

Yield strength

1103.0 MPa

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AMS 4981B, MIL-T 9047G

1120.0 MPa

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Bar, Billet

Thermal

PropertyTemperatureValueRelated StandardsShape

Coefficient of thermal expansion

20 °C

0.0000094 1/K

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AMS 4981B, MIL-T 9047G

20 °C

0.0000103 1/K

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AMS 4981B, MIL-T 9047G

20 °C

0.0000104 1/K

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AMS 4981B, MIL-T 9047G

100 °C

0.0000094 1/K

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AMS 4981B, MIL-T 9047G

315 °C

0.0000103 1/K

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AMS 4981B, MIL-T 9047G

538 °C

0.0000104 1/K

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AMS 4981B, MIL-T 9047G

Melting point

1593.0 °C

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AMS 4981B, MIL-T 9047G

1595.0 - 1675.0 °C

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Bar, Billet

Specific heat capacity

500 J/(kg·K)

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AMS 4981B, MIL-T 9047G

Thermal conductivity

7.7 W/(m·K)

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AMS 4981B, MIL-T 9047G

Bar, Billet

Electrical

PropertyValueRelated Standards

Electrical resistivity

2e-06 Ω·m

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AMS 4981B, MIL-T 9047G

Chemical properties

PropertyValueRelated StandardsShape

Aluminium

5.5 - 6.5 %

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AMS 4981B, MIL-T 9047G

6.0 %

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Bar, Billet

Carbon

0.04

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AMS 4981B, MIL-T 9047G

Hydrogen

0.0125

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AMS 4981B, MIL-T 9047G

Iron

0.15

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AMS 4981B, MIL-T 9047G

Molybdenum

5.5 - 6.5 %

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AMS 4981B, MIL-T 9047G

6.0 %

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Bar, Billet

Nitrogen

0.04

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AMS 4981B, MIL-T 9047G

Oxygen

0.5

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AMS 4981B, MIL-T 9047G

Tin

1.75 - 2.25 %

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AMS 4981B, MIL-T 9047G

2.0 %

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Bar, Billet

Zirconium

3.5 - 4.5 %

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AMS 4981B, MIL-T 9047G

4.0 %

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Bar, Billet