. "a very hard heat-resistant steel containing tungsten"@en-us . "0"^^ . . . "114227447"@en-us . "tungsten steel"@en-us . . . . "wolfram steel"@en-us . "0"^^ . "tungsten steel"^^ . . "110819918"@en-us . "15081828-n"^^ . . . . "115081828"^^ .