GB/T 5686.2-2022 Ferromanganese,ferromanganese-silicon,nitrogen-bearing ferromanganese and manganese metal—Determination of silicon content—Molybdenum blue spectrophotometric method,silicon potassium fluoride titrimetric method and perchloric acid dehydration gravimetric method

Scope

This document specifies the determination of silicon content in manganese iron, manganese silicon alloys, ultra-low carbon manganese silicon alloys, manganese silicon nitride, and metallic manganese using the molybdenum blue spectrophotometry, potassium fluosilicate titration, and perchloric acid gravimetry methods.
This document is applicable to the determination of silicon content in manganese iron, manganese silicon alloys, ultra-low carbon manganese silicon alloys, manganese silicon nitride, and metallic manganese. The determination range (mass fraction) is 0.10% to 40.00%. Method I: Molybdenum blue spectrophotometry, suitable for the determination of silicon content in metallic manganese, with a determination range (mass fraction) of 0.10% to 2.00%; Method II: Potassium fluosilicate titration, suitable for the determination of silicon content in manganese silicon alloys and ultra-low carbon manganese silicon alloys, with a determination range (mass fraction) of 12.00% to 40.00%; Method III: Perchloric acid gravimetry, suitable for the determination of silicon content in manganese iron, manganese silicon alloys, ultra-low carbon manganese silicon alloys, manganese silicon nitride, and metallic manganese, with a determination range (mass fraction) of 0.50% to 40.00%.

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