SAE J514 JIC fittings pressure rating is the same to standard of ISO 8434-2 pressure rating, because SAE J514 and ISO 8434-2 has the same dimensions and specifications for tube fittings.
Working pressures for JIC 37° flared connections
Tube outside diameter (OD) a Wall thickness of tube for flaring b Working pressure c
Metric Inch Metric tube Inch tube Carbon steel and stainless steel Copper alloy d
mm in mm mm MPa (bar) e MPa (bar) e
6 1/4 1,5 1,65 35 (350) 20 (200)
8 5/16 1,5 1,65 35 (350) 20 (200)
10 3/8 1,5 1,65 35 (350) 16 (160)
12 1/2 2 2,1 31 (310) 16 (160)
16 5/8 2,5 2,41 24 (240) 12,5 (125)
20 3/4 3 2,76 24 (240) 12,5 (125)
25 1 3 3,05 21 (210) 10 (100)
30 and 32 1 1/4 3 3,05 17 (170) 8 (80)
38 1 1/2 3 3,05 14 (140) 6,3 (63)
50 2 3,5 3,4 10,5 (105) 5 (50)
a Metric tubing shall be preferred.
b Maximum wall thickness that can be flared, due to connector design.
c For working pressure applications higher than those given in this table, the manufacturer shall be consulted.
d The pressure values for copper alloy connectors and tubes were produced using brass connectors with phosphorescent soft annealed copper tubing.
e 1 bar = 10 5 N/m 2 = 10 5 Pa = 0,1 MPa.