ICS77.140.65

CCSH49

中華人民共和國國家標準

GB/T45970—2025

鋼絲及其制品鋅或鋅鋁合金鍍層

Steelwireandwireproducts—Zincorzinc?aluminumalloycoating

（ISO7989?2：2021，Steelwireandwireproducts—Non?ferrousmetallic

coatingsonsteelwire—Part2：Zincorzinc?alloycoating，MOD）

2025?08?01發(fā)布2026?02?01實施

國家市場監(jiān)督管理總局

國家標準化管理委員會發(fā)布

GB/T45970—2025

目次

前言··························································································································Ⅲ

1范圍·······················································································································1

2規(guī)范性引用文件········································································································1

3術(shù)語和定義··············································································································1

4技術(shù)要求·················································································································1

4.1材料·················································································································1

4.2鍍層要求···········································································································2

5試驗方法·················································································································5

5.1鍍層鋁含量的測定·······························································································5

5.2鍍層重量測定·····································································································5

5.3鍍層耐腐蝕性試驗·······························································································5

5.4鍍層均勻性試驗··································································································5

5.5鍍層附著力試驗··································································································5

5.6鍍層表面質(zhì)量·····································································································6

5.7數(shù)值修約和判定··································································································6

6檢驗規(guī)則·················································································································6

6.1組批規(guī)則···········································································································6

6.2檢驗數(shù)量···········································································································6

6.3其他要求···········································································································6

附錄A（資料性）本文件結(jié)構(gòu)編號與ISO7989?2：2021結(jié)構(gòu)編號對照·······································7

附錄B（資料性）本文件與ISO7989?2：2021的技術(shù)差異及原因·············································8

附錄C（規(guī)范性）用于測定鍍層重量的試驗方法——重量法·················································10

C.1原理···············································································································10

C.2試劑···············································································································10

C.3試樣···············································································································10

C.4試驗步驟·········································································································10

C.5結(jié)果計算·········································································································11

附錄D（規(guī)范性）鍍層均勻性試驗方法············································································12

D.1原理···············································································································12

D.2試劑···············································································································12

D.3試樣制備·········································································································12

D.4試驗程序·········································································································12

D.5判定原則·········································································································13

Ⅰ

GB/T45970—2025

前言

本文件按照GB/T1.1—2020《標準化工作導(dǎo)則第1部分：標準化文件的結(jié)構(gòu)和起草規(guī)則》的規(guī)

定起草。

本文件修改采用ISO7989?2：2021《鋼絲和鋼絲制品鋼絲的有色金屬鍍層第2部分：鋅或鋅合

金鍍層》。

本文件與ISO7989?2：2021相比，在結(jié)構(gòu)上有較多調(diào)整，兩個文件之間的結(jié)構(gòu)編號變化對照一覽

表見附錄A。

本文件與ISO7989?2：2021相比，存在較多技術(shù)差異，在所涉及的條款的外側(cè)頁邊空白位置用垂

直單線（|）進行了標示。這些技術(shù)差異及原因一覽表見附錄B。

本文件與ISO7989?2：2021相比，還做了下列編輯性改動：

——標準名稱更改為《鋼絲及其制品鋅或鋅鋁合金鍍層》。

請注意本文件的某些內(nèi)容可能涉及專利。本文件的發(fā)布機構(gòu)不承擔識別專利的責任。

本文件由中國鋼鐵工業(yè)協(xié)會提出。

本文件由全國鋼標準化技術(shù)委員會（SAC/TC183）歸口。

本文件起草單位：天津市新天鋼中興盛達有限公司、中國石油物資有限公司、江蘇能達線材制品有

限公司、天津華源線材制品有限公司、安平縣昊昌絲網(wǎng)制造有限公司、天津市新天鋼鋼線鋼纜有限公

司、錦銳乾源通信設(shè)備科技有限公司、海城正昌工業(yè)有限公司、昆明遠通電線電纜制造有限公司、冶金

工業(yè)信息標準研究院。

本文件主要起草人：張廣友、陳志強、冷明鑒、任翠英、任軍革、俞永高、王鉞涵、尚新強、夏清、曹倍倍、

才維廣、劉朝利、李建富、劉海平、俞英志、于喜彬、尚新艷、朱珊、李建超、張棟、陳延菘、翟桂新、宮明江、

董鑫、蘇頔瑤、劉洪郡、王玲君。

Ⅲ

GB/T45970—2025

鋼絲及其制品鋅或鋅鋁合金鍍層

1范圍

本文件規(guī)定了圓形鋼絲及其制品上的鋅或鋅鋁合金鍍層（鋅?5%鋁合金或鋅?10%鋁合金）的術(shù)語

和定義、技術(shù)要求、試驗方法及檢驗規(guī)則。

本文件適用于各種用途的熱浸鍍鋼絲及其制品的鋅或鋅鋁合金鍍層。

2規(guī)范性引用文件

下列文件中的內(nèi)容通過文中的規(guī)范性引用而構(gòu)成本文件必不可少的條款。其中，注日期的引用文

件，僅該日期對應(yīng)的版本適用于本文件；不注日期的引用文件，其最新版本（包括所有的修改單）適用于

本文件。

GB/T470—2008鋅錠（ISO752：2024，MOD）

GB/T2972—2016鍍鋅鋼絲鋅層硫酸銅試驗方法

GB/T2976金屬材料線材纏繞試驗方法（GB/T2976—2020，ISO7802：2013，MOD）

GB/T10125人造氣氛腐蝕試驗鹽霧試驗（GB/T10125—2021，ISO9227：2017，MOD）

GB/T