Lub npe "A36" yog tus lej lej uas tau muab los ntawm ASTM.
"A" qhia tias nws yog ferrous hlau specification.
"36" keeb kwm qhia qhov tsawg kawg nkaus tawm lub zog ntawm 36 kilo-pounds ib square inch (ksi). Qhov no yog nws cov cuab yeej cuab tam: 36 ksi=36,000 psi ≈ 250 MPa.
Tsis muaj cais "A36H" qib lees paub hauv ASTM tus qauv. Tus "H" tsis yog ib feem ntawm cov khoom qib; nws qhia cov khoom zoo li (H-beam). Qhov nomenclature yog "ASTM A36 H-Beam" los yog "ASTM A36 Wide Flange Beam." Qhov "H" yog hais txog tus ntoo khaub lig-section. Ib yam li ntawd, ib tug yuav xa mus rau "A36 Channel" lossis "A36 Lub kaum ntse ntse." Cov khoom siv txheem (A36) tseem zoo ib yam.