ASME B18.15:2015 pdf download

ASME B18.15:2015 pdf download.Forged Eyebolts
1 SCOPE
This Standard is limited to dimensions and capacities for carbon steel and corrosion-resistant stainless steel, forged threaded eyebolts intended primarily for lifting applications. For carbon steel construction, the sizes are limited to 1 ⁄ 4 in. through 2 1 ⁄ 2 in., and for corrosion- resistantstainless steel construction, the sizes are limited to 1 ⁄ 4 in. through 1 1 ⁄ 2 in. This Standard covers the follow- ing types and styles: (a) Type 1, plain pattern (straight shank) (see Table 1) (1) Style A, long length (2) Style B, short length (b) Type 2, shoulder pattern (see Table 2) (1) Style A, long length (2) Style B, short length Nonmandatory Appendices A and B contain descrip- tive and cautionary information pertinent to forged eye- bolts. Nonmandatory Appendix C contains information on the application of eyebolts. Nonmandatory Appendix D provides information on eyebolts with met- ric threads M6 through M64 and corresponding material and performance information. The inclusion of dimensional data in this Standard is not intended to imply that all products described are stock production items. Consumers should consult with suppliers concerning availability of products.
2 COMPARISON WITH ISO DOCUMENTS
There is no comparable ISOstandard forincheyebolts. ISO3266, Forged steel eyebolts grade 4 for general lifting purposes, includes information for metric dimensioned eyebolts.
5 THREADS
Threads shall be plain finished unified inch coarse Class2Ainaccordance withASME B1.1. Platedorcoated threads shall conform to the maximum limit of Class 3A (GO) and the minimum limit of Class 2A (NOT GO). Unless otherwise specified, the dimensional accept- ability of screw threads shall be determined based on System 21 of ASME B1.3.
7 MATERIAL
7.1 Carbon and Alloy Steel Forged The material and mechanical property requirements for general purpose carbon steel eyebolts shall be in accordance with ASTM A489. Eyebolts requiring improved toughness or intended primarily for tempera- ture applications to −40°F (−40°C) shall be in accordance with ASTM F541. ASTM A489 and ASTM F541 eyebolts shall be capable of meeting the rated capacities of Tables 3 and 4. 7.2 Corrosion-Resistant Steel Forged When corrosion-resistant steel is required, refer to ASTM A473, alloy types 304, 304L or 316, and 316L. Eyebolts of ASTM A473 materials shall be capable of meeting the rated capacities of Tables 3 and 4. The alloy type as listed in ASTM A473 shall be marked on the eyebolt eye. 7.3 Other Materials When other materials are required, the material shall be as agreed upon by the purchaser and supplier.
10 QUALITY ASSURANCE
10.1 Defects Eyebolts shall be free from visible defects that might affect serviceability. Eyebolts should be routinely visually inspected for such defects according to ASME B18.18. 10.2 Dimensional Conformance Unless otherwise specified, all characteristics shall be inspected to the inspection levels shown in ASME B18.18. 10.3 Tensile Properties The tensile properties shall be determined in accor- dance with ASTM F606 using the thread engagements as prescribed in Nonmandatory Appendix C. 10.4 Surface Discontinuities The inspection and evaluation of surface discontinu- ities shall be in accordance with the requirements in ASTM F788/F788M. Threads shall have no laps at the root or on the flank located below the pitch diameter.
The rigger’s capacity refers to the actual load a single eyebolt can lift. The allowable load varies with the angle between the leg of the lifting rig and the shank of the eyebolt. In general, it also assumes that the load to be liftedacts alongtheaxis throughthe shank. (Theprimary exception is where the eyebolts are mounted on the sides of the load.) Rigger’s capacities are most easily used when the eyebolts are mounted on the top ofa uniformly distributed load. In such cases, the total load is divided by the number of eyebolts to be used for the lift in order to determine the required capacity, taking into account the angle of the legs of the rig. Figure A-1 shows such an application. By symmetry in Fig. A-1, it is apparent that each eye- bolt carries one-half of the total load, i.e., 500 lb in a vertical direction. Therefore, two eyebolts must be used, each having a rigger’s capacity of at least 500 lb for a sling angle of 30 deg.