AASHTO M105-09 pdf free download

AASHTO M105-09 pdf free download.Gray lron Castings.
1. SCOPE
1.1. This specification covers gray iron castings intended for general engineering use where tensile strength is a major consideration. Castings are classified on the basis of the tensile strength of the iron in cast test bars.
1.1.1. This specification subordinates chemical composition to tensile strength.
1.2. Castings produced to this specification are graded on the basis of minimum tensile strength obtained in special test coupons designed to standardize cooling rate. The tensile strength developed in certain casting sections may vary from test coupon values. (See Appendix X 1.2.)
1.3. The values stated in SI units are to be regarded as the standard.
1 .4. AASHTO M 306 may be specified for drainage structure castings such as frames, grates, rings, and covers for inlets, manholes, and other structures if loading requirements exceed normal highway loading or if more restrictive dimensional tolerances are required.
2. REFERENCED DOCUMENTS
2.1. AASHTO Standard:
• M 306, Drainage, Sewer, Utility, and Related Castings
2.2. ASTM Standards:
• A644, Standard Terminology Relating to Iron Castings
• E8/E8M, Standard Test Methods for Tension Testing of Metallic Materials
2.3. Military Standard:
• MIL-STD-129, Marking for Shipment and Storage’
2.4. Federal Standard:
• Fed. Std. No. 123, Marking for Shipment (Civil Agencies)’
3. TERMINOLOGY
3.1. De/initions of Terms Specific to This Standard:
3.1.1. ,nanu/aclurer—a producing foundry/facility where iron is melted and poured into molds.
3.1.2. supplier—an agent, representative, or organization that provides castings that it did not manufacture.
3.1.3. purchaser—the end user of the casting.
3.2. The preceding terms and definitions are specific to this specification. ASTM A644 contains other terms and definitions relating to gray iron castings.
4. CLASSIFICATION
4.1. Castings ordered and produced in accordance with this specification are classified into a number
of grades based on the properties of cast test bars (Table 1). Each class is designated by a number
followed by a letter. The number indicates the minimum tensile strength of the cast test bar, and
the letter indicates the size of the test bar. Examples of proper designations arc as follows:
• Gray Iron Castings, M 105, Class 30B
• Gray Iron Castings, M 105, Class 40C
5. ORDERING INFORMATION –
5.1. Orders fbr material to (Ii is specification s/ia!! include the following information:
5.1.1. AASHTO designation number and year of issue;
5.1.2. Class of iron required (Section 4.1 and Table 1);
5.1.3. The size of the cast test bar (letter classification—A, B. C, or S) that best represents the thickness of the controlling section of the casting (Table 3);
5.1.4. The tension test specimen (B or C) to be machined from test bar C (Section 11.3, Table 2, and Figure 2);
5.1.5. The tension test specimen to be machined from test bar S (Section 11.4, Table 2, and Figure 2);
5.1.6. Lot size (Section 14);
5.1.7. Special requirements (Section 7);
5.1.8. Saving tested specimens or unbroken test bars (Section 16.4); and
5.1.9. Special preparation for delivery (Section 18).
6. TENSILE REQUIREMENTS
6.1. Test bars representing castings conforming to this specification shall meet the requirements for tensile strength as described in Table 1.
7.SPECIAL REQUIREMENTS
7.1.When agreed upon in writing between the manufacturer and the purchaser, it may be necessary for the castings to meet special requirements regarding hardness, chemical composition, microstructure, pressure tightness, radiographic soundness, dimensions, surface finish, etc.
8.DIMENSIONAL REQUIREMENTS
8.1.The castings shall conform to the dimensions or drawings furnished by the purchaser, or, if there are no drawings, to the dimensions predicted by the pattern equipment supplied by the purchaser.
AASHTO M105-09 pdf download.