ISO 3506-4-2025 耐腐蚀不锈钢紧固件的机械性能 - 第4部分攻丝螺丝

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Fasteners — Mechanical properties

of corrosion-resistant stainless steel

fasteners —

Part 4:





Fixations—Caractéristiquesmécaniquesdesfixationsenacier

inoxydable résistant à la corrosion —

Partie4:Visàtôledegradesetclassesdeduretéspécifiés

International

Standard

ISO 3506-4

Third edition

2025-01

Reference number

ISO 3506-4:2025(en) © ISO 2025

ISO 3506-4:2025(en)











CP 401 • Ch. de Blandonnet 8



Phone: +41 22 749 01 11



www.iso.org



ISO 3506-4:2025(en)

 ....................................................................................................................................................................................................................................................iv

 ...........................................................................................................................................................................................................................................vi

1 Scope ............................................................................................................................................................................................................................................. 1

2 Normative references ................................................................................................................................................................................................. 1

  ................................................................................................................................................................................................ 1

  ..................................................................... 2

  ........................................................................................................................................................................................................................ 2

  ...............................................................................................................4

  .................................................................................................................... 4

5 Materials ................................................................................................................................................................................................................................... 4

  ...................................................................................................................................................................................4

  ...............................................................................5

  ................................................................................................................................... 5

5.4 Corrosion resistance ......................................................................................................................................................................................6

5.5 Magnetic properties ........................................................................................................................................................................................6

  ......................................................................... 6

  ........................................................................................................................................... ............................................................................. 6

  ..................................................................................................................................... 6

6.3 Core hardness ....................................................................................................................................................................................................... 7

  .................................................................................................................................................................................7

6.5 Torsional strength ............................................................................................................................................................................................7

7 Inspection ...................................................................... .......................................................................................................................................................... 8

  ........................................................................................................................................................................ 8

  ......................................................................................................................................................................................8

  .................................................................................................................................................................................8

  .................................................................................................................................................................................8

  ........................................................................................................................................................................................................................ 8

  ........................................................................................................................................... ............................................................................. 8

8.2 Hardness test ........................................................................................................................................................................................................9

  .....................................................................................................................................................................................................9

  .................................................................................................................................................................. 9

8.2.3 Core hardness test .........................................................................................................................................................................9

  ............................................................................................................................................9

8.3 Drive test ...............................................................................................................................................................................................................10

8.4 Torsional test......................................................................................................................................................................................................10

  ............................................................................................................................................................................................. 11

  ........................................................................................................................................... ..........................................................................11

  ........................................................................................................................................................ 12

  ....................................................................................................................................................................... 12

 .........................................................................................................................................................................................................................................13

iii

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标签： #ISO #腐蚀 #不锈钢

摘要：

本页面详细解读了最新发布的国际标准 ISO 3506-4-2025《耐腐蚀不锈钢紧固件的机械性能 - 第4部分攻丝螺丝》。该标准专门针对用于金属材料攻丝的不锈钢螺钉，规定了其在耐腐蚀环境下的硬度、抗扭强度、安装扭矩及表面缺陷等关键机械性能指标。相较于旧版，2025版更新了对奥氏体、马氏体及铁素体不锈钢材料的分类，并引入了更严格的硬度与抗拉强度匹配要求。无论您是紧固件制造商、质检工程师，还是从事海洋工程、化工设备或食品机械设计的专业人士，本文都将帮助您准确掌握该标准的技术变更，确保攻丝螺丝在强腐

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ISO 3506-4-2025 耐腐蚀不锈钢紧固件的机械性能 - 第4部分攻丝螺丝

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