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SAE J844 Nonmetallic Air Brake System Tubing

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Product Code:SAE J844
Title:Nonmetallic Air Brake System Tubing
Issuing Committee:Air Brake Tubing And Tube Ftg Committee
Scope:This SAE Standard covers the minimum requirements for nonmetallic tubing as manufactured for use in air brake systems. Nonreinforced products are designated type A and reinforced products type B. It is not intended to cover tubing for any portion of the system which operates below -40 degree C (-40 degrees F), above +93 degrees C (+200 degrees F), above a maximum working gage pressure of 1030 kPa (150 psi), or in an area subject to attack by battery acid. This tubing is intended for use in the brake system for connections which maintain a basically fixed relationship between components during vehicle operation. Coiled tube assemblies required for those installations where flexing occurs are covered by this document and SAE J1131 to the extent of setting minimum requirements on the essentially straight tube and tube fitting connections which are used in the construction of such assemblies.
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【英文标准名称】:StandardSpecificationforElectrodepositedCoatingsofPalladium-NickelforEngineeringUse
【原文标准名称】:工程用钯-镍电镀层的标准规范
【标准号】:ASTMB867-1995(2008)
【标准状态】:现行
【国别】:美国
【发布日期】:1995
【实施或试行日期】:
【发布单位】:美国材料与试验协会(US-ASTM)
【起草单位】:B08.08.01
【标准类型】:(Specification)
【标准水平】:()
【中文主题词】:
【英文主题词】:Compositecoatings--specifications;Electrodepositedcoatings--specifications;Engineeredelectrodepositedcoatings--specifications;Palladium-nickelelectrodepositedcoatings
【摘要】:1.1Composition8212;Thisspecificationcoversrequirementsforelectrodepositedpalladium-nickelcoatingscontainingbetween70and95mass%ofpalladiummetal.Compositecoatingsconsistingofpalladium-nickelandathingoldoverplateforapplicationsinvolvingelectricalcontactsarealsocovered.1.2Properties8212;Palladiumisthelightestandleastnobleoftheplatinumgroupmetals.Palladium-nickelisasolidsolutionalloyofpalladiumandnickel.Electroplatedpalladium-nickelalloyshaveadensitybetween10and11.5,whichissubstantiallylessthanelectroplatedgold(17.0to19.3)andcomparabletoelectroplatedpurepalladium(10.5to11.8).Thisyieldsagreatervolumeorthicknessofcoatingperunitmassand,consequently,somesavingofmetalweight.Thehardnessrangeofelectrodepositedpalladium-nickelcomparesfavorablywithelectroplatednoblemetalsandtheiralloys(1,2).Note18212;Electroplateddepositsgenerallyhavealowerdensitythantheirwroughtmetalcounterparts.ApproximateHardness(HK25)
Gold
50x2013;250
Palladium
75x2013;600
Platinum
150x2013;550
Palladium-Nickel
300x2013;650
Rhodium
750x2013;1100
Ruthenium
600x2013;1300
Product Code:SAE AMS7459
Title:Bolts and Screws Steel, Low Alloy Heat Resistant 195,000 Psi Hardened & Tempered, Roll Threaded (Cancelled Jan 1991)
Issuing Committee:
Scope: