冷锻造紧固件和相似元件钢 第1部分 碳和低合金钢丝规格

钢丝应符合此标准的一般要求和对于钢类型和等级的适当的详细的要求。在询问和定购时提出任何附录A中的选项时，钢丝应与任何选项的要求相一致。
5 Steelmaking process制钢工艺
The steel making and casting process shall be any process except the Bessemer process. See also option A.1.
NOTE. If coatings are required the type of coating to be applied, its mass or thickness and method of measurement should be greed at the time of the enquiry and order.
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冷锻造紧固件和相似元件钢
第1部分 碳和低合金钢丝规格
Contents目录
制钢
和铸造工艺应是除Bessemer工艺外的任何工艺。也见选项A.1。
6 Freedom from defects故障免除
The steel shall be free from pipe and from such segregation and surface defects as might preclude its use for the purpose for which it is intended. See also option A.2.
9 Number of turns in reverse torsion test扭转疲劳测试中旋转的匝数
Specification规格
1 Scope范围
This Part of BS 31 11 specifies requirements for steel wire up to and including 30 mm diameter for use in the manufacture of low, medium and high tensile, cold forged fasteners and similar components in the following eight types of steel.
7.2 Decarburization shall be determined by microscopic examination as described in BS 6617 : Part 1.按照BS 6617 : 第1部分的描述，通过精微检测来决定脱碳。
8 Chemical composition化学成分
9 Mechanical tests机械测试
10 Hardenability可淬性
11 Grain size颗粒尺寸
12 Tolerances on diameter直径公差
13 Marking标注
14 Test certificate测试证书
and 1 and boron-treated steels types 9 and 1 O指定范围内：碳钢类型0和1，硼处理钢9和10，产品分析中允许的背离值
4 Permitted deviations in product analysis from specified range: alloy steels types 2,3,5 and 7指定范围内：合金钢类型2,3,5 和7，产品分析中允许的背离值
D denotes direct drawn. D指直接冷拉
(d) the abbreviation GR and the number denoting the grade of decarburization required (see clause 7). 缩略语GR和数量表明要求的脱碳等级（见条款7）
5 Mechanical properties of wire金属线机械性能
6 Hardenability requirements可淬性要求
7 Steel type 1: Jominy hardenability requirements钢类型1：
8 Tolerances on diameter直径公差
Appendices附录
A Options选项
B Tests for surface defects表面缺陷测试
C Detection of surface carburization表面渗碳探测
D Hardening test on steel wire for wire diameters not exceeding 25 mm
(b) the nominal, maximum or minimum diameter required (see clause 12);要求的名义上的，最大或最小直径（见条款12）；
(c) the coil mass with inside and outside diameters.内直径和外直径的圈数。
4 General概要
The wire shall comply with the general requirements of this standard and the appropriate specific requirements for the steel type and grade. Where any of the options given in appendix A are called up at the time of the enquiry and order, the wire shall, in addition, comply with the requirements of any such options.
NOTE. The titles of the publications referred to in this standard are listed on the inside back cover.注意：此标准引用的参考文献见内封底
2 Designation命名
The designation shall consist of the following items in the order given:命名按照以下顺序给出：
Examples of this designation are as follows:此命名示例如下：
(1)BS3111 :Part 19/2CONDAGR3
(2) BS 31 11 : Part 1 0/1 COND B
3 Information to be supplied by the purchaser采购商提供的信息
此BS 31 11部分指定了在生产低，中，高拉力，冷锻造紧固件和相似元件中使用的≥30mm铜丝的要求，包括以下八种类型的钢：
O low carbon steel低碳钢
1 medium carbon steel中碳钢
2 carbon-molybdenum steel碳－钼钢
3 1 % chromium steel 1 %铬钢
注意：如果要求用指定类型的涂层，应在询问和定购时达成关于圈数和厚度和测量方式的协议。
3.2 Options选项
A number of options are specified in appendix A. In the event that the purchaser does not indicate his wish to implement any of these options and specify his requirements
对直径不超过25mm的钢丝的淬水测试
Tables表格
1 Permitted depths of decarburization脱碳允许深度
2 Chemical composition (ladle analysis)化学成分（铸桶分析）
3 Permitted deviations in product analysis from specified range: carbon steels types O
1 Scope范围
2 Designation命名
3 Information to be supplied by the purchaser采购商提供的信息
4 General概要
5 Steelmaking process制钢工艺
6 Freedom from defects故障免除
7 Decarburization脱碳
B denotes drawn, spheroidize annealed and finally light drawn; B指冷拉，球化退火，最终轻拉；
C denotes spheroidize annealed and finally light drawn; C指球化退火和最终轻拉；
(a) the number of this British Standard, ?.e. BS 31 11 : Part 1 ;此英国标准的数量?.e. BS 31 11 :
部分1；
(b) the type number and grade number of steel required (see table 2);要求低的钢的类型数和等级数（见表2）；
除应用目的外，钢应从金属管中，隔离的和表面故障中自由移动，也见选项A.2。
7 Decarburization脱碳
7.1 The requirements of 7.2 and 7.3 shall not apply to steel type O except type 0/4.