Comparision of Characteristics between Hot Rolled Plate and Wire made of Titanium

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  • チタン展伸材と鋳造材の特性比較

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Mechanical properties, including tensile strength, proof stress, elongation and hardness of wrought titanium material standard and casting titanium materials (JIS class 1〜JIS class 4) were measured under the same conditions, and findings were compared. The result showed that from JIS class 1 to JIS class 4, the data deviation from wrought material, in respect of tensile strength, decreased 50%, proof stress 10〜40%, elongation 20〜50%. Compared with JIS class 1 titanium material, JIS class 4 titanium materials were better in both tensile strength and proof stress. This may result from the influence of trace elements. Especially the oxygen content, as shown in EPMA surface analysis, prominently influenced the mechanical properties.

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