볼프람 VRN

ВРН
BPH
VRN
ВHgNi

ГОСТ В74 ГОСТ 19671-91
ТУ В55 ТУ 11-77

Si Fe Al Mo Ca W
ТУ 11-77 - - - - - ≥99.9
ГОСТ 19671-91 0.001-0.01 ≤0.01 0.001-0.01 ≤0.04 ≤0.02 ≥99.9

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