紧固件 耐腐蚀不锈钢紧固件的机械性能 第7部分：规定等级和性能等级的平垫圈

[中文适用范围]： 本文件规定了由耐腐蚀奥氏体、铁素体和双相不锈钢制成的平垫圈的机械和物理性能，设计用于与螺栓、螺钉、螺柱和螺母组合的螺栓连接，这些螺栓、螺钉、螺柱和螺母具有符合 ISO 3506-1 和 2001 标准规定的等级和性能等级。这些类型的垫圈也与其他不锈钢紧固件一起使用，例如形成其自身配合螺纹的螺钉（参见例如 ISO 3506-4）。性能（不锈钢等级的详细性能、与点蚀、缝隙和晶间腐蚀有关的腐蚀行为、磁性等）警告 — 符合本文件要求的垫圈在 10 °C 至 35 °C 的环境温度范围内进行测试，并用于从 –20 °C 到 +150 °C 的应用范围内。但是，这些垫圈也在此范围之外使用，低至 –196°C，最高可达 +300°C，用于特定应用。它们有可能无法在较低和/或较高温度下保持规定的机械和物理性能。因此，用户有责任根据组件的使用环境条件做出适当的选择（另见第 6 和 7 条）。本文件适用于以下厚度为 0.2 mm 至 6 mm 的平面非固定和固定垫圈（见 5.1）： — 平垫圈和平垫圈（有或无滚花、肋或倒角）， — 方形垫圈， — 方孔垫圈， — 异形板。以下将术语“垫圈”用于本文件范围内的所有类型的垫圈和板。本文件未规定对可焊性等功能特性的要求。 [外文原描述]： This document specifies the mechanical and physical properties of flat washers made of corrosion resistant austenitic, ferritic and duplex stainless steels, designed to be used in bolted joints in combination with bolts, screws, studs and nuts with specified grades and property classes in accordance with ISO 3506-1 and ISO 3506-2. These types of washers are also used with other stainless steel fasteners such as screws forming their own mating thread (see e.g. ISO 3506-4). ISO 3506-6 provides general rules and additional technical information on suitable stainless steels and their properties (detailed properties of stainless steel grades, corrosion behaviour with regards to pitting, crevice and intergranular corrosion, magnetic properties, etc.) WARNING — Washers conforming to the requirements of this document are tested at the ambient temperature range of 10 °C to 35 °C and are used in applications ranging from –20 °C to +150 °C. However, these washers are also used outside this range down to –196 °C and up to +300 °C for specific applications. It is possible that they do not retain the specified mechanical and physical properties at lower and/or elevated temperatures. Therefore, it is the responsibility of the user to determine the appropriate choices based on the service environment conditions of the assembly (see also Clauses 6 and 7). This document applies to the following flat non-captive and captive washers with thickness 0,2 mm to 6 mm (see 5.1): — plain washers and flat washers (with or without knurls, ribs or chamfers), — square washers, — square hole washers, — shaped plates. The term “washer” is used in the following for all types of washers and plates within the scope of this document. This document does not specify requirements for functional properties such as weldability.