这种钢好买/ q$ E! Z w# e
EN 10025的符号标记含义 4 M0 U' l) b: E3 V; cThe symbol J & K:# _: y! l! C; ?( C/ b2 P2 o
JR - Absorbed impact energy min. 27 Joule at 20 °C+ X2 s" s `! Q( V# V0 a& X) [( |
J0 - Absorbed impact energy min. 27 Joule at 0 °C% {2 C6 Y; N( A% | K
J2 - Absorbed impact energy min. 27 Joule at -20 °C ( O9 ?$ s/ ?" f8 a! dK2 - Absorbed impact energy min. 27 Joule at –30 °C or 40 Joule at –20 °C 6 s; q1 }. v8 y% `- S I' z" @& Y* H+ [; v
The symbol G: + E/ S v" C; s8 E& kG Deoxidation Delivery condition0 Z+ Y$ N1 @& e# J" A9 L R3 K
G1 Rimming steel At manufacture's discretion : L E [2 {4 e/ ^; a1 e9 H2 ^G2 Rimming steel not permitted At manufacture's discretion0 @9 r- S1 L. p; @( n; c
G3 Fully killed with nitrogen Normalized or normalized rolled 3 H6 O0 n; X& d. [: j0 Q" @5 [ binding element 1 x8 M" a. @7 h. w' y/ I) K1 H9 RG4 Fully killed with nitrogen At manufacture's discretion& _- b; s& C8 f- V4 }7 R. y! Y1 e
binding element( ]( }$ P4 X* @+ m3 N2 T/ M
$ K5 i& ?% }% c
N是正火的意思,表示供货状态为正火态。