Tántalo
ASTM B521 Grade R05200Tántalo
ASTM B521 Grade R05400Acero inoxidable martensítico
ASTM A336 Grade F91 Type 2 Normalized and Tempered or Liquid Quenched and TemperedTántalo
ASTM B521 Grade R05240Niobio
ASTM B391 Grade R04210Niobio
ASTM B391 Grade R04261Acero inoxidable austenítico
ASTM A487 Grade 8 Class A, Heat-Treated