| 2 | Iron, steel and alloy | 4 | Ni | Steel — Determination of nickel — Dimethylglyoxime spectrophotometric method ISO 4939 :2016 |
| 5 | P | Iron,steel and alloy-Determination of phosphorus content-Bismuth phosphomolybdate biue spectrophotometric method and antimony phosphomolybdate blue spectrophotometric methodl GB/T 223.59-2008 |
| Chemical analysis of ferrous materials. Determination of phosphorus in non-alloyed steels and irons. Molybdenum blue spectrophotometric method BS EN 10184:2006(R2010) |
| Steel and iron — Determination of phosphorus content — Phosphovanadomolybdate spectrophotometric method ISO 10714:1992 |
| 6 | Cr | Iron,steel and alloy-Determination of chromium content-Visual titration or potentiometric titration method GB/T 223.11-2008 |
| Alloyed steels — Determination of chromium content — Inductively coupled plasma optical emission spectrometric method PD CEN/TR 10367:2019 |
| Steel and iron — Determination of chromium content — Potentiometric or visual method(ISO 4937:1986) EN 24937:1990 |
| Steel and iron — Determination of chromium content — Potentiometric or visual titration method ISO 4937:1986 |
| Steel and iron — Determination of chromium content — Potentiometric or visual method (ISO 4937:1986) EN 24937:1990/AC:1991 (Editorial correction) |
| Methodsfor chemical analysis of iron，steel and alloy--The sodium carbonate separation-diphenyl carbazide photometric method for the determination of chromium content GB/T 223.12-1991 |
| Standard Test Methods for Chemical Analysis of High-Temperature, Electrical, Magnetic, and Other Similar Iron, Nickel, and Cobalt Alloys ASTM E354-14 |
| 7 | Cu | Methods for chemical analysis of iron, steel and alloy - The flame atomic absorption spectrophotometric method for the determination of copper content GB/T 223.53-1987 |
| Chemical analysis of ferrous metal — Determination of copper content — Flame atomic absorption spectrometric method (ISO 4943:1985) EN 24943:1990 |
| Steel and cast iron — Determination of copper content — Flame atomic absorption spectrometric method ISO 4943:1985 |
| Methods for chemical analysis of iron，steel and alloy--The neocuproine-chloroform extraction photometric method for the determination of copper content GB/T 223.19-1989 |
| Methods for chemical analysis of iron，steel and alloy--The sodium thiosulfate separation iodimetric method for the determination of copper content GB/T 223.18-1994 |
| 8 | Mg | Methods for chemical analysis of iron, steel and alloy The flame atomic absorption spectrometric method for the determination of magnesium content GB/T 223.46-1989 |
| 9 | Co | Steel,iron and alloy-Determination of cobalt content-Flame atomic absorption spectrometric method GB/T 223.65-2012,ISO11652：1997 |
| 10 | Zn | Steel and alloy - Determination of trace element contents Part 12: Determination of zinc content by flame atomic absorption spectrometric method GB/T 20127.12-2006 |
| 11 | C,S | Steel and iron-Determination of total carbon and sulfur content Infrared absorption method after combustion in an induction furnace (routine method) GB/T 20123-2006, |
