ISO 898-2:2012 碳钢和合金钢制造的紧固件的机械性能 第2部分：规定性能等级的螺母 粗牙螺纹和细牙螺纹

标准编号：ISO 898-2:2012

中文名称：碳钢和合金钢制造的紧固件的机械性能 第2部分：规定性能等级的螺母 粗牙螺纹和细牙螺纹

英文名称：Mechanical properties of fasteners made of carbon steel and alloy steel — Part 2: Nuts with specified property classes — Coarse thread and fine pitch thread

发布日期：2012-03

标准范围

ISO 898的这一部分规定了粗螺纹和细螺距螺母的机械和物理特性在10°C至35°C的环境温度范围内测试时，由碳钢和合金钢制成的螺纹。符合ISO 898本部分要求的螺母在该环境温度范围内进行评估。它们有可能在升高和/或降低时不保持规定的机械和物理性能温度。注1:符合ISO 898本部分要求的螺母已用于应用范围从？50℃至+150℃。用户有责任咨询有经验的紧固件材料专家对于范围之外的温度？50°C至+150°C，最高温度为+300°C，以确定给定应用的适当选择。注2提供了低温和高温下使用的钢的选择和应用的信息EN 10269、ASTM F2281和ASTM A320/A320M中的实例。ISO 898的这一部分适用于螺母:a)由碳钢或合金钢制成；b)粗螺纹M5≤D≤M39，细螺距螺纹M8 × 1≤D≤M39 × 3；c)具有根据ISO 68-1的三角形ISO公制螺纹；d)具有根据ISO 261和ISO 262的直径/节距组合；e)具有指定的属性类别，包括证明载荷；f)具有不同的螺母样式:薄螺母、规则螺母和高螺母；g)最小高度m≥0.45 d；h)平面的最小外径或宽度s≥1.45 d（见附件A）；i)能够与性能等级符合ISO 898-1的螺栓、螺钉和螺柱配合。对于热浸镀锌螺母，请参见ISO 10684。ISO 898的这一部分没有规定以下特性的要求:-主要扭矩特性(参见ISO 2320)；-扭矩/夹紧力特性(测试方法参见ISO 16047)；-可焊性；-耐腐蚀性。

This part of ISO 898 specifies mechanical and physical properties of nuts with coarse thread and fine pitchthread made of carbon steel and alloy steel when tested at an ambient temperature range of 10 °C to 35 °C.Nuts conforming to the requirements of this part of ISO 898 are evaluated at that ambient temperature range.It is possible that they do not retain the specified mechanical and physical properties at elevated and/or lowertemperatures.NOTE 1 Nuts conforming to the requirements of this part of ISO 898 have been used in applicationsranging from?50 °C to +150 °C. It is the responsibility of users to consult an experienced fastener materials expertfor temperatures outside the range of?50 °C to +150 °C and up to a maximum temperature of +300°C to determineappropriate choices for a given application.NOTE 2 Information for the selection and application of steels for use at lower and elevated temperatures is given forinstance in EN 10269, ASTM F2281 and in ASTM A320/A320M.This part of ISO 898 is applicable to nuts:a) made of carbon steel or alloy steel;b) with coarse thread M5 ≤ D ≤ M39, and fine pitch thread M8×1 ≤ D ≤ M39×3;c) with triangular ISO metric thread according to ISO 68-1;d) with diameter/pitch combinations according to ISO 261 and ISO 262;e) with specified property classes, including proof load;f) with different nut styles: thin nuts, regular nuts and high nuts;g) with minimum height m ≥ 0,45D;h) with a minimum outside diameter or width across flats s ≥ 1,45D (see Annex A);i) able to mate with bolts, screws and studs with property classes according to ISO 898-1.For hot dip galvanized nuts, see ISO 10684.This part of ISO 898 does not specify requirements for properties such as:— prevailing torque properties (see ISO 2320);— torque/clamp force properties (see ISO 16047 for test method);— weldability;— corrosion resistance.

标准预览图