Number And Size of Bolts For Flanged Joints - ASME B16.5

DESIGN STRESS VALUES (ksi) vs TEMPERATURE
SPEC GRADE TEMPERATURE deg F (deg C)
    650 700 750 800 850 900 950 1000 1050 1100
    (343) (371) (399) (427) (454) (482) (510) (538) (566) (593)
ASTM A193 B6 21.2 21.2 21.2 19.5 15.6 12.0        
ASTM A193 B7 (*) 25.0 25.0 23.6 21.0 17.0 12.5 8.5 4.5    
ASTM A193 B7M (*) 20.0 20.0 20.0 18.5 16.2 12.5 8.5 4.5    
ASTM A193 B8-CL1 11.2 11.0 10.8 10.5 10.3 10.1 9.9      
ASTM A193 B8-CL2(**) 25.0                  
ASTM A193 B16 25.0 25.0 25.0 25.0 23.5 20.5 16.0 11.0 6.3 2.8
ASTM A320 L7 25.0 25.0                
ASTM A453 660 20.2 20.1 20.0 19.9 19.9 19.9 19.8 19.8    

(*) FOR BOLT DIAMETERS ≤ 2.1/2"    Please note that the above values are for reference purposes only. Values should be extracted from ASME or BS 5500.

(**) FOR BOLT DIAMETERS < 3/4"


YIELD STRENGTH (ksi) vs TEMPERATURE
SPEC GRADE TEMPERATURE deg F (deg C)
    70 400 600 800 1000 1200 1400
    (20) (204) (316) (427) (538) (649) (760)
ASTM A193 B6 85 76 72        
ASTM A193 B7 75-105 65-92 60-85 53-74      
ASTM A193 B8-CL1 30 21 18 17      
ASTM A193 B8-CL2 65-100            
ASTM A193 B16 85-105            
ASTM A320 L7,L7A 105            
ASTM A453 660 85            
BS 4882 NIMONIC
B80A
90           73
  Inconel 718 260           138

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