|
INTRODUCTION
Niobium is a highly ductile, soft refractory
metal. The machining characteristics of niobium and its common
alloys are similar to those of 316 stainless steel, and in
lathe turning they behave much like soft copper. The chemical
compositions, along with the physical and mechanical properties
of niobium and its two most common alloys are listed in Tables
1 and 2. Additional alloy information may be found at our
website, www.corrosionsolutions.com, under the "Tech Resources"
menu in the "Product Information" section. Guidelines and
recommendations for specific machining and forming operations
are given below. The advice and data should be used as starting
points for working with niobium and its alloys.
TABLE 1: CHEMICAL COMPOSITIONS OF NIOBIUM / NIOBIUM
ALLOYS
| |
Nb
|
Nb
— 1 Zr |
C-103
|
| Niobium
|
99.7
|
98.5
|
86-89
|
| Zirconium
|
---
|
0.8
— 1.2 |
0.7
|
| Hafnium
|
---
|
0.01
|
9.0
— 11.0 |
| Titanium
|
---
|
---
|
0.7
— 1.3 |
| Tantalum
|
---
|
0.2
|
0.5
|
| Tungsten
|
---
|
0.05
|
0.5
|
| Other
Impurities: |
<0.3
total |
<
0.03 oxygen
< 0.03 nitrogen
< 0.002 hydrogen
|
<
0.03 oxygen
< 0.03 nitrogen
< 0.002 hydrogen
|
One of Eleven 1 2
3 4
5 6
7 8
9 10
11
|
