This standard has been approved for use by agencies of the Department of Defense. 2. Referenced Documents ASTM Standards: 2. A Specification for. ASTM A – Download as PDF File .pdf), Text File .txt) or read online. ASTM A Standard Practice for Steel Bars, Selection Guide, Composition, and Mechanical Properties.

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This is not a specification for the procurement of steel. Applicable procurement specifications are listed in Section 5.

The criteria for placing a steel composition in one of the three general class designations, Classes P, Q, and R described in Section 4 are as follows:. A hardness indicated by tests made at a location shown in Fig. Normal good shop practices are assumed, with control of austenitizing and tempering temperatures, and mild agitation of the part in the quenching bath.

The locations for obtaining tension tests are described in 6. Steels with lower alloy contents are often satisfactory through the use of special processing techniques.

Alloy Corrosion Resistant Nickel Alloy Plate – Sandmeyer Steel

The values given in parentheses are astn conversions to SI units that are provided for information only and are not considered standard. Note 1—Steels listed as approved for a certain section or strength may be used for lighter sections and lower strengths. Those in italics are no longer considered standard grades due to decreased usage.

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Note 3—An H-steel with the same grade designation as a standard SAE-AISI steel is capable of meeting the same section and strength requirements as the standard steel see Specification Aand is the preferred method of specification. Note 4—Steels having a maximum carbon content of 0. Note 1—Steels listed as approved for heavier sections or higher strengths asrm be used in the same conditions for lighter sections and lower strengths.

Note 5—Parts made of steel with a carbon content of 0. D These steels have a4000 hardenability for Class P-4, because of difference in test locations, but are satisfactory for other smaller sizes.

Alloy Technical Information

Astn These steels have insufficient hardenability for Class Q-4 parts because of different location of test specimens, but are satisfactory for smaller sections. Note 1—Steels listed as approved for heavier section or higher strengths may be used in the same conditions for lighter sections and lower strengths. Hot-rolled series steels with a maximum carbon content of 0. Only cold-drawn series steels used in the strength level and section thickness for which hot-rolled steels of the same composition are approved may be welded, and in this case caution should be exercised to see that excessive a040 growth does not occur in the heat-affected zone.

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Referenced Documents purchase separately The documents listed below are referenced within the subject standard but are not provided as part of the standard. The criteria for placing a steel composition in one of the three general class designations, Classes P, Q, and R described in Section 4 are as follows: Equivalent Tensile Strength, psi A.

Equivalent Yield Strength, psi A.

Alloy 400/400AR

Minimum B As-Quenched Hardness. Thickness of Flat Sections, in. Link to Active This link will always route to the current Active version of the standard.