GB/T 5686.4-2008
GB/T 5686.4-2008 Ferromanganese,ferromanganese-silicon,itrogen-bearing ferromanganese and manganese metal—Determination of phosphorus content—Molybdenum blue photometric method and alkali content titrimetric method
Abstract
This section specifies the determination of phosphorus content in manganese-iron, silicon-manganese alloys, nitrided manganese-iron, metallic manganese, and electrolytic manganese using the molybdenum blue spectrophotometry and the alkali titration method. This section is applicable to the determination of phosphorus content in manganese-iron, silicon-manganese alloys, nitrided manganese-iron, and metallic manganese. The determination range (mass fraction) is 0.0030% to 0.650%. Method I: Molybdenum blue spectrophotometry, applicable to the determination of silicon content in manganese-iron, silicon-manganese alloys, nitrided manganese-iron, and metallic manganese. The determination range (mass fraction) is 0.0030% to 0.450%. Method II: Alkali titration method, applicable to the determination of manganese-iron alloys. The determination range (mass fraction) is 0.080% to 0.650%.
General Product Information
| Document Type | National standards |
|---|---|
| Standard Status | Replaced |
| Standard Code | GB/T 5686.4-2008 |
| CCS | Analysis methods for steel and iron alloys |
| ICS | Iron alloy |
| Implement Date | 2008-11-01 |