Product Code:SAE J1868
Title:Restricted Hardenability Bands for Selected Alloy Steels
Issuing Committee:Carbon And Alloy Steels Committee
Scope:Restricted hardenability steels have been in use for some time but the specific restrictions for a particular grade depend upon customer needs and vary from mill to mill. Such steels are desirable to provide more controlled heat treatment response and dimensional control for critical parts. Because of increasing interest in steels with restricted hardenability, the SAE Iron and Steel Technical Committee directed Division 8 to prepare a set of standard steels with restricted hardenability.In 1993, the American Society for Testing and Materials (ASTM) adopted the twelve SAE restricted hardenability steels and added ten more. SAE decided to include in SAE J1868 the additional 10 steels.In general, steels with restricted hardenability (RH steels) will exhibit a hardness range not greater than 5 HRC at the initial position on the end-quench hardenability bar and not greater than 65% of the hardness range for standard H-band steels (see SAE J1268) in the "inflection" region. Generally the restricted hardenability band follows the middle of the corresponding standard H-band. An example of the RH band compared with the standard H-band is given for SAE 4140 in Figure 1.【英文标准名称】:Cateringcontainers.Dimensionsofaccessoriesandsupports
【原文标准名称】:食物容器.第2部分:附件和支承件的尺寸
【标准号】:BSEN631-2-1995
【标准状态】:作废
【国别】:英国
【发布日期】:1995-11-15
【实施或试行日期】:
【发布单位】:英国标准学会(BSI)
【起草单位】:
【标准类型】:()
【标准水平】:()
【中文主题词】:作标记;作标记;给养设备;尺寸;厨房用容器;容器;支撑物;储藏设备;支架
【英文主题词】:dimensions;storageequipment;kitchenstoragevessels;supports;marking;cateringequipment;racks;containers
【摘要】:
【中国标准分类号】:X08
【国际标准分类号】:67_250;97_040_99
【页数】:12P;A4
【正文语种】:英语