1、AECMA PREN223B 77 303231 0002533 -_I b II_! A.E.C.M.A. STANDARD NORME A.E,C.M.A; A.E.C.M.A. NORM DRAFT prEN22 18 Edition 1 October 1977 ENGLISH VERSION . STEEL FE-PL52 S 980 MPa 4 Rm 5a*) EN2069-5 . :ondition ind ieat treatment CUPPlY Annea led Hardened and tempered i I 960Oc 40 I ._ - O Stress % Ru
2、pture Strass Elongation i at rupture c I 1MPa = 1N nm lotes dl.ameter d J- refer,to the $Ape external diameler. *- see line 98. I -1 .- . _ prEN22i8 Page 4 AECMA PREN2238 i3 I LOi1231L O002535 T I a O r 1 2 Condit ion and Heat treatment reference !signation I_ - - Harcened and tempered 975 i 10 “C/
3、OQ, t Temper 625 i 5 OC 2) Atten i n 3) Optional test, s drawn t ri k of brittleness in air hardened materia? at low cervPce gemperatures. 4) Value in brackets for strip test pieces. 5) Method to be used in case of conflict. 6) Pro0 b nd test if required, to be negotiated between manuSacEurer an8 purchaser, cII- SmXmil purpos steel, weldable (TIG particularly recommended),
