MSDS

Data

Chemical Requirements for Niobium and Niobium Alloy

ASTM B391, B392, B393, B394: (Maximum Weight %)
Element	Type 1 Reactor Grade Unalloyed Niobium R04200	Type 2 Commercial Grade Unalloyed Niobium R04210	Type 3 Reactor Grade Nb 1% Zirconium R04251	Type 4 Commercial Grade Nb 1% Zirconium R04261
Each Ingot
Carbon	0.01	0.01	0.01	0.01
Nitrogen	0.01	0.01	0.01	0.01
Oxygen	0.015	0.025	0.015	0.025
Hydrogen	0.0015	0.0015	0.0015	0.0015
Zirconium	0.02	0.02	0.8 to 1.2	0.8 to 1.2
Tantalum	0.01	0.2	0.1	0.5
Iron	0.005	0.01	0.005	0.01
Silicon	0.005	0.005	0.005	0.005
Tungsten	0.03	0.05	0.03	0.05
Nickel	0.005	0.005	0.005	0.005
Molybdenum	0.010	0.10	0.10	0.050
Hafnium	0.02	0.02	0.02	0.02
When Specified
Boron	0.0002	-	0.0002	-
Aluminum	0.002	0.005	0.002	0.005
Beryllium	0.005	-	0.005	-
Chromium	0.002	-	0.002	-
Cobalt	0.002	-	0.002	-

Additional Chemical Requirements for Finshed Nb and Nb Alloy Nb1Zr Products (When Specified by Purchaser) Maximum, ppm
Element	Type 1 Reactor Grade Unalloyed Niobium R04200	Type 2 Commercial Grade Unalloyed Niobium R04210	Type 3 Reactor Grade Niobium 1% Zirconium R04251	Type 4 Commercial Grade Niobium 1% Zirconium R04261
Oxygen	250	400	250	400
Carbon	100	150	100	150
Nitrogen	100	100	100	100
Hydrogen	15	15	15	15

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