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GB/T 223.91-2021 Active
GB/T 223.91-2021 Iron,steel and alloy—Determination of copper—2,2′-Biquinoline spectrophotometric method
Abstract
This document specifies the use of the 2,2′-bipyridine spectrophotometry method to determine the copper content in steel and cast iron.
This document is applicable to the determination of copper content with a mass fraction of 0.02% to 5%.
General Product Information
| Document Type | National standards |
|---|---|
| Standard Status | Active |
| Standard Code | GB/T 223.91-2021 |
| CCS | Analysis methods for steel and iron alloys |
| ICS | Black metal comprehensive |
| Implement Date | 2022-03-01 |
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