Active Member
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[China]
Address: Rm.2009,20th Floor,Unit C,Yuhong Plaza,No. 61 Zijingshan Road，Zhengzhou,China
Contact name:Ailsa
Zhengzhou Sanhui Refractory Metal Co., Ltd. |
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Table 1. Grade of Niobium tube
| Grade | Suplying state | Diameter | Lengtha | Voluntary Standers |
Nb1 Nb2 Nb3 Nb4 | Cold state(Y) Annealedb(M) | 3.0-6.5 >6.5-10.0 >10-18 | >500 | ASTM B392-03 |
Thermal processing state(R) Annealedb(M) | >18-25 >25-40 >40-50 >50-65 | |||
FNb1 FNb2 | Thermal processing state(R) Annealedb(M) | 3.5-5.0 >5.0-12 | >500 >300
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| NbHf10-1 | Thermal processing state(R) Annealedb(M) | 20-80 | 500-2000 | |
Note : the length of Annealing niobium tube being supplied is not greater than 2500mm.
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Table 2. Niobium tube Chemical PPM
| chemistry% | ||||||||||||
| designation | chief component | impurities maximum | ||||||||||
| Nb | Fe | Si | Ni | W | Mo | Ti | Ta | O | C | H | N | |
| Nb1 | Remainder | 0.004 | 0.003 | 0.002 | 0.004 | 0.004 | 0.002 | 0.07 | 0.01 | 0.004 | 0.0012 | 0.002 |
| Nb2 | Remainder | 0.005 | 0.005 | 0.005 | 0.01 | 0.01 | 0.004 | 0.1 | 0.015 | 0.01 | 0.0015 | 0.01 |
Table 3. Mechanical requirements of Niobium tube (annealed condition)
| Grade | Tensile strengthδbpsi (MPa),≥ | Yield strength δ0.2, psi (MPa),≥ | Elongation in 1"/2" gage length,%,≥ |
RO4200-1 RO4210-2 | 18000 (125) | 10500 (73) | 25
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| Special requirements of niobium pipe to be agreed on by the supplier and buyer of negotiations | |||
Specification
Niobium and Niobium tube
1. Material: RO4200-1, RO4210-2
2. The Size of niobium tube: OD1.0-150mm*TK 0.2-5.0mm*L
3. Length:200mm-9000mm
4. Standard: As per ASTM B394-98
5. Purity: >=99.9% or 99.95% with best Niobium price
