31412130iron alloyPT2026-03-30 20:50:49UF31412131alloy, ferrousNDUF31412132alloy, ironNDUF31412133ferrous alloyNDBT31375248iron and iron alloyPTNT31438464cast ironPTNT31438466wrought ironPTNT31438469steelPTNT31438471Invar (TM)PT