ISO - 11400
Nickel, ferronickels and nickel alloys — Determination of phosphorus content — Phosphovanadomolybdate spectrophotometric method
| Organization: | ISO |
| Publication Date: | 1 December 2021 |
| Status: | active |
| Page Count: | 14 |
| ICS Code (Nickel, chromium and their alloys): | 77.120.40 |
| ICS Code (Ferroalloys): | 77.100 |
scope:
This document specifies a spectrophotometric method for the determination of the phosphorus content in nickel, ferronickels and nickel alloys between 0,000 5 % (by mass) and 0,05 % (by mass).
Arsenic, chromium, hafnium, niobium, silicon, tantalum, titanium and tungsten interfere, but the interferences can be avoided by complexation or volatilization (for chromium). The lowest phosphorus content [0,000 5 % (by mass)] can only be reached in samples with low contents of these interfering elements.
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