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GB/T 13320-2025 Active
GB/T 13320-2025 Metellographic grading atlas and assessing method for steel die forgings
Abstract
This document describes the metallographic structure rating chart (hereinafter referred to as "rating chart") and evaluation method for steel forging parts.
This document is applicable to structural steel forging parts that have undergone quenching and tempering, normalizing treatment, isothermal normalizing treatment, and post-forging cooling treatment.
This document is not applicable to the evaluation of forging parts with decarburization, overheating, or overburning structures.
General Product Information
| Document Type | National standards |
|---|---|
| Standard Status | Active |
| Standard Code | GB/T 13320-2025 |
| CCS | Forging and pressing |
| ICS | \nSteel forgings |
| Implement Date | 2026-07-01 |
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