SAE AMS 7907A:2001 pdf download Beryllium Bars, Rods, Tubing, and Shapes Instrument Grade
1. SCOPE:
1.1 Form: This specification covers beryllium in the form of bars, rods, tubing, and machined shapes fabricated from vacuum hot pressed powder.
1.2 Application: These products have been used typically for parts requiring a combination of high strength-to-weight ratio, high modulus of elasticity, excellent dimensional stability, and minimum guaranteed micro-yield strength, but usage is not limited to such applications.
1.3 Safety – Hazardous Materials: While the materials, methods, applications and processes described or referenced in this specification may involve the use of hazardous materials, this specification does not address the hazards which may be involved in such use. It is the sole responsibility of the user to ensure familiarity with the safe and proper use of any hazardous materials and to take necessary precautionary measures to ensure the health and safety of all personnel involved.
1.3.1 WARNING: Beryllium Product: Inhalation of dust or fumes may cause serious chronic lung disease. Potential cancer hazard is based principally on animal tests.
2. APPLICABLE DOCUMENTS: The issue of the following documents in effect on the date of the purchase order forms a part of this specification to the extent specified herein. The supplier may work to a subsequent revision of a document unless a specific document issue is specified. When the referenced document has been canceled and no superseding document has been specified, the last published issue of that document shall apply.
2.1 SAE Publications:
Available from SAE, 400 Commonwealth Drive, Warrendale, PA 15096-0001 or http://www/sae.org.
AMS 2806 Identification, Bars, Wire, Mechanical Tubing, and Extrusions, Carbon and Alloy Steel and Corrosion and Heat Resistant Steels and Alloys
2.2 ASTM Publications:
Available from ASTM, 100 Barr Harbor Drive, West Conshohocken, PA 19428-2959 or http://
www.astm.org.
ASTM E 8 Tension Testing of Metallic Materials
ASTM E 8M Tension Testing of Metallic Materials (Metric)
ASTM E 112 Determining Average Grain Size
ASTM E 1417 Liquid Penetrant Examination
ASTM E 1742 Radiographic Examination
2.3 ANSI Publications:
Available from ANSI, 25 West 43rd Street, New York, NY 10036-8002.
ANSI B46.1 Surface Texture
ANSI Y14.5M Dimensioning and Tolerancing
3. TECHNICAL REQUIREMENTS:
3.1 Composition:
Shall conform to the percentages by weight shown in Table 1.
3.1.1 Beryllium oxide shall be determined by gas fusion; aluminum, iron, magnesium and silicon determined by DC plasma emission spectrometry; carbon determined by combustion; and beryllium determined as the difference.
3.1.2 Beryllium content includes 36% of actual beryllium oxide content.
3.2 Condition: Hot pressed with secondary options of heat treatment, stress relief, and/or hot isostatic pressing (HIP) after hot pressing.
3.2.1 Surface Finish: The product shall be furnished with a machined surface. Surface finish shall be no greater than 110 Ra [125 microinches (3.2 µm) rms], determined in accordance with ANSI B46.1.
3.3 Properties: The product shall conform to the following requirements.
3.3.1 Tensile Properties: Shall be as shown in Table 2, determined at room temperature in accordance with ASTM E 8 or ASTM E 8M:
SAE AMS 7907A:2001 pdf download
