ASTM A449-2007b 通用最低拉伸强度为120/105/90ksi的热处理钢制六角头螺钉、螺栓和螺柱用标准规范

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Product Code:SAE AMS6497
Title:Steel Bars, Forgings, and Tubing, Nitriding 1.4Cr - 1.2Mo - 0.3V (0.29 - 0.36C) Premium Aircraft-Quality for Bearing Applications, Electroslag Remelted or Consumable Electrode Vacuum Remelted
Issuing Committee:Ams E Carbon And Low Alloy Steels Committee
Scope:This specification covers a nitriding grade of premium aircraft-quality, low-alloy steel in the form of bars, forgings, mechanical tubing, and forging stock.These products have been used typically for nitrided parts such as bearings, operating under heavy loads and high speeds at moderate temperatures, and subject to very rigid inspection standards, and requiring highest surface hardness, high core toughness, and less distortion than parts made from steel requiring quenching to case harden, but usage is not limited to such applications.【英文标准名称】:Printedwiringboardsforelectronicequipment(singlefacedanddoliblefaced)
【原文标准名称】:电子设备用印制电路板(单面及双面)
【标准号】:JISC6491-1980
【标准状态】:作废
【国别】:日本
【发布日期】:1980-12-01
【实施或试行日期】:1980-12-01
【发布单位】:日本工业标准调查会(JISC)
【起草单位】:Electronics
【标准类型】:()
【标准水平】:()
【中文主题词】:印制导线;印制电路;印制电路基板;印制电路板;电子设备及元件
【英文主题词】:
【摘要】:
【中国标准分类号】:L30
【国际标准分类号】:
【页数】:28P;A4
【正文语种】:日语