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GB/T 4699.2-2025 Active
GB/T 4699.2-2025 Ferrochromium,silicochromium,nitrogen-bearing ferrochromium and high nitrogen ferrochromium—Determination of chromium content—Ammonium persulfate oxidation titrimetric method and potentiometric titration method
Abstract
This document specifies the determination of chromium content in chromium iron, silicon chromium alloy, nitrided chromium iron, and high-nitrogen chromium iron using the ammonium persulfate oxidation titration method and potentiometric titration method.
This document is applicable to the determination of chromium content in chromium iron, silicon chromium alloy, nitrided chromium iron, and high-nitrogen chromium iron, with a measurement range (mass fraction) of 25.00% to 80.00%.
General Product Information
| Document Type | National standards |
|---|---|
| Standard Status | Active |
| Standard Code | GB/T 4699.2-2025 |
| CCS | Analysis methods for steel and iron alloys |
| ICS | Iron alloy |
| Implement Date | 2026-02-01 |
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