MIL-PRF-423G
Standards Institute, 25 West 43rd Street, New York, NY 10036 (or website:
ASTM INTERNATIONAL
ASTM A686
-
Specification for Tool Steel, Carbon (DoD Adopted)
ASTM E18
-
Rockwell Hardness and Rockwell Superficial Hardness of
Metallic Materials (DoD Adopted)
(Copies of these documents are available from www.astm.org or ASTM International, 100 Barr
Harbor Drive, P.O. Box C700, West Conshohocken, PA 19428-2959.)
SAE INTERNATIONAL
SAE J437
- Selection and Heat Treatment of Tool and Die Steels
(Copies of these documents are available from www.sae.org or SAE Customer Service, 400
Commonwealth Drive, Warrendale, PA 15096-0001.)
2.4 Order of precedence. Unless otherwise noted herein or in the contract, in the event
of a conflict between the text of this document and the references cited herein, the text of this
document takes precedence. Nothing in this document, however, supersedes applicable laws and
regulations unless a specific exemption has been obtained.
3. REQUIREMENTS
3.1 First article. When specified (see 6.2), a sample shall be subjected to first article
inspection (see 6.3) in accordance with 4.2.
3.2 Materials. Materials used shall be in accordance with the manufacturer s materials
specifications for ripping tools. Steel, when used, shall be forged steel as specified in
ASTM A686. The ripping tools shall be fabricated from compatible materials, inherently
corrosion resistant or treated to provide life protection against the various forms of corrosion and
deterioration that may be encountered in any of the applicable operating and storage
environments to which the ripping tools may be exposed. Asbestos, cadmium, and radioactive
materials shall not be used in this item. Radioactive material is defined by Title 10, Code of
Federal Regulations (CFR) Parts 30 and 40, and other radioactive material in which the specific
activity is greater than 0.002 microcuries per gram or the activity per item equals or exceeds 0.01
microcuries (see 4.4.1)
3.2.1 Dissimilar metals. Dissimilar metals shall not be used in intimate contact with
each other unless protected against galvanic corrosion (see 4.4.2).
3.2.2 Identification of materials and finishes. The contractor shall identify the specific
material, material finish or treatment for use with component and subcomponent, and shall make
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