RO5200 pure tantalum rod has excellent chemical properties. It has extremely high corrosion resistance. It has no reaction to hydrochloric acid, concentrated nitric acid and "aqua regia" under cold and hot conditions. Tantalum is immersed in 200 degrees Celsius sulfuric acid for one year, and the surface is only damaged by 0.006 mm.

Experiments on tungsten plates, tungsten rods, molybdenum plates, tungsten tubes, molybdenum tubes, and tungsten crucibles have proved that pure tantalum rods have no effect on alkaline solutions, chlorine water, dilute sulfuric acid and many other agents at room temperature. They only react to hydrofluoric acid and hot concentrated sulfuric acid.

The characteristics of pure tantalum rods make it widely used. In equipment for making various inorganic acids, it can be used to replace stainless steel, and its life can be increased by dozens of times compared with stainless steel. In addition, in chemical, electronic, electrical and other industries, tantalum can replace the tasks that were previously undertaken by precious metal platinum, greatly reducing the required costs.

Chemical composition table:

Grade	Chemical composition, Max
	Fe	Si	Ni	W	Mo	Ti	Nb	O	C	H	N	Ta
Ta1	0.005	0.005	0.005	0.005	0.002	0.002	0.005	0.02	0.004	0.002	0.005	余量
Ta2	0.005	0.005	0.005	0.005	0.002	0.002	0.1	0.03	0.1	0.002	0.01	余量

Machinable size tolerance:

Diameter	Dia tolerance			Length	Tolerance
	As gorged	拉棒	车棒
3.0-4.5	-	0.05	-	500-1500	±2
4.5-6.5	±0.15	-	-	500-1500	±2
6.5-10	±0.15	-	-	400-1500	±2
10-16	±0.15	-	-	300-1200	±2
16-18	±0.15	-	-	200-1500	±2
18-25	-	-	±0.5		±2
25-40	-	-	±0.5		±2
40-50	-	-	±0.6		±2
50-65	-	-	±0.7		±2

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