EN vs SAE Hydraulic Hose Standards Explained

In practice yes, for this bore range. Both describe a two-braid oil-resistant body, and our table publishes 41.5 MPa beside 6,019 psi on the 3/16 code against a 4:1 burst of 166.0 MPa. The designations come from different standards bodies, so the certificate should name the one your drawing calls out.

Layer count versus a catalogue number. 4SP states four spiral layers in the designation itself, and 100R12 is the American designation for the equivalent four-spiral body. Neither letter code tells you the bore, so the size still has to be quoted: on the 3/8 code of this range the braided equivalent holds 33.0 MPa.

Two braided wire layers. The European system counts construction in the code, so 1SN is one braid and 2SN is two, which is why the pressure class roughly doubles with the same bore. At 3/8 inch the two-braid body is rated 33.0 MPa with a 21.7 mm outside diameter.

Because the two standard systems are metric and imperial, and buyers work in one or the other. The 1/4 code is listed at 40.0 MPa and 5,802 psi, the same pressure expressed twice, so an order written in either unit can be checked against the same line.

Because the dimensional tables were harmonised: inside diameter bands, outside diameter and minimum bend radius are set from the same bore series. That is why the 3/16 code reads 4.6 to 5.4 mm and a 90 mm arc in both systems, and why one certificate can cover both designations.

Because machine builders in different regions adopted different bodies of work, and a hose sold into both markets has to satisfy both documents. The 5/16 code illustrates it: 7.7 to 8.5 mm inside diameter and 35.0 MPa whichever designation is printed on the order. The paper difference is real, and it is what an inspector checks against the marking.

The EN designation from the drawing, with the SAE equivalent noted alongside. A typical line reads EN 853 2SN, 3/8 inch, 330 bar, and the bore band of 9.3 to 10.1 mm is what the assembly is checked against at goods-in.

The SAE code, usually 100R2AT for this class. Quote the pressure as well, because the same R-number is offered at different bores: 415 bar at 3/16 inch and 330 bar at 3/8 inch on this range, so the code alone is not a complete specification.

100 m per size, cut to length, across 4.6 mm to 10.1 mm inside diameter. Each shipment carries a certificate naming the standard, the pressure class and the batch, with burst recorded against the row, for example 1,660 bar on the 3/16 code.

No, because it is the same body: the 1/4 code is 40.0 MPa with a 0.42 kg/m weight whichever name is printed on the invoice. Samples are cut free, and a firm figure follows bore, length, ends, destination and the standard to be certified.