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GB 46040-2025: Limits of leachable harmful metal elements in wall materials
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GB 46040-2025: Limits of leachable harmful metal elements in wall materials

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ICS 91.100.01 CCSQ04 National Standard of the People's Republic of China Limits of leaching harmful metal elements from wall materials Released on August 1, 2025 Implementation on August 1, 2026 State Administration for Market Regulation The National Standardization Administration issued

Preface

This document is in accordance with the provisions of GB/T 1.1-2020 "Guidelines for standardization work Part 1.Structure and drafting rules for standardization documents" Drafting. Please note that some of the contents of this document may involve patents. The issuing organization of this document does not assume the responsibility for identifying patents. This document is proposed and coordinated by the Ministry of Industry and Information Technology of the People's Republic of China. Limits of leaching harmful metal elements from wall materials

1 Scope

This document specifies the limits for leachable hazardous metal elements from wall materials and describes the corresponding test methods. This document is applicable to industrial and civil building wall materials produced by mixing general solid waste.

2 Normative references

The contents of the following documents constitute the essential clauses of this document through normative references in this document. For referenced documents without a date, only the version corresponding to that date applies to this document; for referenced documents without a date, the latest version (including all amendments) applies to This document. GB/T 18968 Terminology of Wall Materials GB/T 39198 Classification and coding of general solid waste GB/T 39804 Determination of leachable harmful substances in wall materials

3 Terms and Definitions

The terms and definitions defined in GB/T 18968, GB/T 39198 and the following apply to this document. 3.1 Metals that can be dissolved in the leachate and are harmful to the human body and pollute the environment.

4 Requirements

The limits of leachable harmful metal elements from wall materials shall comply with the requirements of Table 1. Table 1 Requirements for limits of leachable harmful metal elements from wall materials The unit is milligrams per liter No. Harmful metal element limit 1 Mercury (Hg)a ≤0.002 2 Arsenic (As) ≤0.10 3 Lead (Pb) ≤0.30 4 Cadmium (Cd) ≤0.01 5.Chromium (Cr) ≤1.00 6 Manganese (Mn) ≤1.50 a. No requirements are imposed on sintered wall material products. ...