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发表于 2011-11-10 11:01:06
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来自: 中国江苏常州
本帖最后由 wenjuanzhi2008 于 2011-11-10 11:11 编辑 5 U. i! k3 O! d4 j Z
6 q* E3 w! T9 C) D% M* N3 ~' g1 ~ Material designation: 16CrMo4* A* r' j$ T$ r+ U
Diagram No.: 56
. |) O3 B' w7 }! N DIN designation: 16CrMo4& {' W6 K- @+ G( Z9 ~3 G
Mat.No. (Wr.Nr.) designation: 1.7242
- c. K; d4 S! A& g Chemical composition in weight %: 0.13-0.20% C, 0.15-0.35% Si, 0.50-0.80% Mn, max. 0.035% P, max. 0.035% S, 0.90-1.20% Cr, 0.20-0.30% Mo, max. 0.40% Ni.
/ t2 |$ N p, i O Steel group: Alloy special structural steels
" J; z! L9 v, e* T Applications: Forgings for construction of steam turbines (<= 530 °C)! X) |" a% k+ }
Comment: Alloy special structural steels: Structural steels, Cr-Mo-steels with < 0,35% Mo, Cr-Mo-B-steels
6 ` f5 C; {# j4 P' u Source: KTS 20084 s1 V; V3 V( b# }* _# S+ V7 u1 x {
+ O9 P) s2 t) Z z Heat Treatment
- b% K+ l/ y* T8 c5 S' W6 q' R Hot working: 850-1100℃5 ^7 |8 F& b7 G, ]& ^
Soft annealing: 650-700℃
! r/ y8 h a; A7 M4 Q% I5 a# B$ B+ S" T Hardening in oil: 900-950℃
; y3 @+ k. `4 a/ ]% j O% [. [ Tempering: 580-680℃
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