这种钢好买 2 Z8 T" }+ o/ \. N8 ?$ vEN 10025的符号标记含义5 R/ `# f2 W9 u/ n. Z! h; I
The symbol J & K:# w) L5 r5 O. e5 q
JR - Absorbed impact energy min. 27 Joule at 20 °C 0 a2 v# V% z- N" `1 T7 U* w8 yJ0 - Absorbed impact energy min. 27 Joule at 0 °C9 v5 ]0 c+ G- Q' |. r
J2 - Absorbed impact energy min. 27 Joule at -20 °C* y, G- f$ _: B& `) P$ j, d
K2 - Absorbed impact energy min. 27 Joule at –30 °C or 40 Joule at –20 °C w: e( v! f8 P4 ~( v" G. x& n2 ?0 e" G7 \* `
The symbol G:. z! w5 S2 X% W7 g" ~
G Deoxidation Delivery condition 7 P7 v' U5 r- }4 i1 t5 c7 x1 D2 a A6 jG1 Rimming steel At manufacture's discretion 4 W4 V+ [7 O ]; [& B' H1 @1 NG2 Rimming steel not permitted At manufacture's discretion & z! T! K* d# B5 y @! F! Y" gG3 Fully killed with nitrogen Normalized or normalized rolled 7 b) Z& \2 A( t U) N% u' g binding element: f; F) S3 M$ m/ Y+ n
G4 Fully killed with nitrogen At manufacture's discretion ! M5 l3 a; x- [ binding element + A D5 g; O& |) o) K. F5 g- R$ U! \. q" l* P% L; M5 d
N是正火的意思,表示供货状态为正火态。