JIS H4630 Class 1 Welded

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JIS Class 1 titanium is the first of four commercially pure titanium grades. JIS Class 1 is considered the softest titanium with the highest ductility. This grade is known for its good cold forming characteristics and high impact toughness. It also provides excellent corrosion resistance and welding properties.

Related Standards

Equivalent Materials

This material data has been provided by Japanese Industrial Standards.

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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4.506 g/cm³

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Typical for Pure Titanium


PropertyValueConditionRelated StandardsShapeComment

Elastic modulus

120.0 GPa

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Typical for Pure Titanium


27.0 %

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JIS H4630

Tube, Pipe

Poisson's ratio

0.361 [-]

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Typical for Pure Titanium

Shear modulus

46.0 GPa

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Typical for Pure Titanium

Tensile strength

275.0 MPa

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JIS H4630

Tube, Pipe



Coefficient of thermal expansion

8.400000000000001e-06 - 8.599999999999999e-06 1/K

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Typical for Pure Titanium

Melting point

1670.0 °C

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Typical for Pure Titanium

Specific heat capacity

513.0 - 599.0 J/(kg·K)

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Typical for Pure Titanium

Thermal conductivity

15.0 - 22.0 W/(m·K)

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Typical for Pure Titanium

Technological properties

Processing history