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AS1424H - Hose Assemblies, Metal, Medium Pressure, High Temperature

Details
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Document Number: AS1424H
Project Initiation: 2017-06-01 11:13:47.0
Project Number: G3D15-03
Revision Number: H
Sponsor Name: Ted Goosen
Title
Hose Assemblies, Metal, Medium Pressure, High Temperature
Scope
<p>This SAE Aerospace Standard (AS) covers medium-pressure, high-temperature, flexible, metal-hose assemblies suitable for operation in pneumatic systems up to 800 °F with excursion to 1200 °F for Class “B” and “N” and primarily for use on jet aircraft power plants. Refer to 1.2.1 for recommended usage.</p> 1.1 Types<br/> a. Type 1: Convoluted helical inner tube, seamless or welded and redrawn tube material.<br/> b. Type 2: Convoluted annular inner tube, seamless or welded and redrawn tube material.<br/> c. Type 3: Convoluted helical inner tube, as-welded tube material.<br/> d. Type 4: Convoluted annular inner tube, as-welded tube material.<br/> <p>NOTE: Unless otherwise specified on a design activity controlled drawing, or contract, Type 1, Type 2, Type 3, or Type 4 inner tube construction may be supplied.</p> 1.2 Classes<br/> Hose assemblies furnished under this document may be of the following classes. If no class is defined the class “S” shall be utilized.<br/> a. Class "A": Corrosion resistant Type 321 convoluted inner tube and nickel alloy Type 625 or 718 fitting components.<br/> b. Class "B": Nickel alloy Type 625 convoluted inner tube and nickel alloy Type 625 or 718 fitting components<br/> c. Class "N": Nickel alloy Type 625 convoluted inner liner and corrosion resistant Type 321 or 347 fitting components.<br/> d. Class "S": Corrosion resistant Type 321 convoluted inner liner and corrosion resistant Type 321 or 347 fitting components.<br/> <p>NOTE: Refer to Table 1 for specific fitting material definition. 1.2.1 Recommended Usage<br/> a. Class “A” and “S” hose assemblies are recommended for continuous service use in static applications up to 800 °F maximum.<br/> b. Class “B” and “N” hose assemblies are recommended for continuous service use in both static and dynamic flexure applications at continuous temperature up to 800 °F with excursions to 1200 °F within the pressure limits as defined in Figure 2.<br/>
Rationale
Correcting a material callout discrepancy between section 1.2 and Table 1
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