What are the Pressure Ratings for different SAE Flanges?

Sae flange, Code 61 flange, Code_62_flange Younglee manufacturer

SAE Flanges are usually forged flanges designed to standard SAE J518C and ISO 6162. They are mostly used in hydraulic systems and high pressure applications. So what are the working pressures for different sizes of SAE hydraulic flanges?

There are two different series divided by the pressure ratings, which are:

  • Pressure 3000 psi series

SAE Flanges of 3000 psi series usually are known as code 61 flanges, and sometimes they are called SAE 3000 flanges or SAE flange class 3000.

3000 psi SAE flanges are designed according to standard ISO 6162-1.

Here below is the chart shows the specific working pressure of the different sizes of SAE 3000 flanges:

Working Pressure of SAE Flanges CODE 61 SAE J518-1 / ISO 6162-1
Inch SizeMax Working PressureGrade 8 and Equivalent Fastener Torque Value
PSIMPaSocket Head UNC (lb-ft)Hex Head UNC (lb-ft)
1/2”5000352418
3/4”5000354433
1”4600324433
1 1/4”4000286852
1 1/2”30002111180
2”30002111180
2 1/2”250017.511180
3”230016218160
3 1/2”5003.5218160
4”5003.5218160
5”5003.5218160

  • Pressure 6000 psi series

Hydraulic SAE Flanges of 6000 psi series usually are known as code 62 flanges, and sometimes they are called SAE 6000 flanges or SAE flange class 6000.

6000 psi SAE flanges are designed according to standard ISO 6162-2.

Here below is the chart shows the specific working pressure of the different sizes of hydraulic flanges SAE class 6000:

Working Pressure of Hydraulic flanges CODE 62 SAE J518-2 / ISO 6162-2
Inch SizeMax Working PressureGrade 8 and Equivalent Fastener Torque Value
PSIMPaSocket Head UNC (lb-ft)Hex Head UNC (lb-ft)
1/2”6000402418
3/4”6000404433
1”6000406852
1 1/4”60004011180
1 1/2”600040218160
2”600040332281