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GB/T 4236-2025 Active
GB/T 4236-2025 Steel-examination by sulphur print
Abstract
This document specifies the principles and purposes of the sulfur imprint test method for steel, sampling and preparation, materials and reagents, fixative solution, test procedures, test safety, test results, and test reports.
This document is applicable to steel with a sulfur content (mass fraction) of less than 0.40%, and cast iron can also be used for reference.
General Product Information
| Document Type | National standards |
|---|---|
| Standard Status | Active |
| Standard Code | GB/T 4236-2025 |
| CCS | Metallographic examination methods |
| ICS | Other testing methods for metal materials |
| Implement Date | 2026-03-01 |
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