At present, N6 is the most common nickel bar in the market, while N4 and N8 are used less. The difference between the three is the purity. The first is the N4 nickel bar, which has the highest purity of 99.90 per cent or more and is especially popular in military products. In our sales data, it is easy to find that the utilization rate of N6 is much higher than that of the other two materials. Its characteristics are high purity and cost compression, so it is most used in the daily industrial production process with purity up to 99.60% or more. Finally, there is N8, which is rarely used because of its low purity of 99.00% or more.

Here, we also attached said, in the process of the use of nickel rod, often someone says "to use the above 3 N nickel rod", so the 3 N also is a kind of material of nickel material, but it is not, it is one of the purity of nickel rod saying words, where N can be understood as the meaning of "nine", so the words above is "to use the purity reaches more than 99.90% of the nickel rod"