| http://www.w3.org/ns/prov#value | - Moreover, carbon fibers having various characteristics such as a strength of at least 300 kg/mm2 and a modulus of elasticity of at least 20 t/mm2, for example, those of a strength of 400 to 600 kg/mm2 and a modulus of elasticity of 20 to 30 t/mm2 or those of a strength of 300 to 450 kg/mm2 and a modulus of elasticity of 35 to 65 t/mm2 can be steadily produced according to this invention.
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