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FIELD : metallurgy.
SUBSTANCE : cast-iron contains the following, wt % : carbon 3.2-3.8; silicium 0.8-1.0; manganese 0.8-1.0; rare-earth elements 0.26-0.32; zirconium 2.2-2.6; vanadium 0.03-0.05; boron 0.06-0.1; iron is the rest.
EFFECT : increasing cast-iron thermal resistance.
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