Bolt materials

The SE values in Table 10-49 are equal to the basic allowable stresses in tension S multiplied by a quality factor E (see subsection Pressure Design of Metallic Components Wall Tliick-ness"). The design stress values for bolting materials are equal to die basic allowable stresses S. The stress values in shear shall be 0.80 times the allowable stresses in tension derived from tabulated values in Table 10-49 adjusted when applicable in accordance widi Note 13. 8tress values in bearing shall be twice those in shear. 

Among the topics of the TEMA Standards are nomenclature, fabrication tolerances, inspeclion, guarantees, tubes, shells, baffles and support plates, floating heads, gaskets, tube sheets, channels, nozzles, end flanges and bolting, materi specifications, and fouhng resistances. 

Type of Treatment Items Treated Splashers or Spray Nozzles Stairway and Handrail Structural Connectors Ring Joint Connectors Bolts, Nuts, Washers Anchor Connectors Nails Mechanical Equipment Support Anchor Bolts—Material Furnished by Cold Water Basin—Material Furnished by Basin Accessories, by Mfg. ... 

Bolting materials must be considered. While not strictly a material problem, bolting also includes the requirement for studs, the tapping requirements, bolt head style and many aspects, as well as plating type if... 

Allowable Stresses and Quality Factors for Metallic Piping, Pipeline, and Bolting Materials... 

Minimum Energy Requirements. Except for bolting materials, the applicable minimum energy requirements for carbon and low alloy steels with specified minimum tensile strengths less than 656 MPa (95 ksi) shall be those shown in Table GR-2.1.3(e). 

Lateral Expansion Requirements. Other carbon and low alloy steels having specified minimum tensile strengths equal to or greater than 656 MPa (95 ksi), all bolting materials, and all high alloy steels (P-Nos. 6, 7, and 8) shall have a lateral expansion opposite the notch of not less than 0.38 mm (0.015 in.) for all specimen sizes. The lateral expansion is the increase in width of the broken impact specimen over that of the unbroken specimen measured on the compression side, parallel to the line constituting the bottom of the V-notch (see ASTM A 370). 

The bases for establishing design stress values for bolting materials and allowable stress values for other metallic materials in this Code are as follows ... 

Alloy-steel bolting material conforming to ASTM A193 or ASTM A 354 shall be used for insulating flanges if such bolting is made 3 mm (Vs in.) undersized. 

ALLOWABLE STRESSES AND QUALITY FACTORS FOR METALLIC PIPING, PIPELINE, AND BOLTING MATERIALS... 

Table IX-4 Design Stress Values for Bolting Materials (Cont d)...

JSA G 4107, Alloy steel bolting materials for high temperature service. 

Recommended bolting material ASME SA 193 Grade B8 Class 2/ASME SA 194 Grade 8 - strain hardened. 

BS 1506 1990 Specification for carbon, low alloy and stainless steel bars and billets for bolting material to be used in pressure retaining applications. 

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