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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 / J! s( f1 m. v- j. _
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Material designation: 16CrMo4' F) a: j) Z1 y
Diagram No.: 56! }/ K$ W5 ^3 ?) A% } m3 O" z R
DIN designation: 16CrMo4
" K" L9 @2 ^) X* } Mat.No. (Wr.Nr.) designation: 1.7242
) G" B1 v. D. \+ Z' b7 g4 k3 c 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.
+ V! s% d" W, x( d Steel group: Alloy special structural steels
. z! U! z- `1 j( W$ A Applications: Forgings for construction of steam turbines (<= 530 °C)9 j# p6 {2 h l i! C* C
Comment: Alloy special structural steels: Structural steels, Cr-Mo-steels with < 0,35% Mo, Cr-Mo-B-steels
/ e0 D$ P. \; D Source: KTS 2008
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Heat Treatment
5 u6 ^0 ]+ E- G4 T+ _8 ] Hot working: 850-1100℃
7 f. v& }0 ^8 W' t: y, v Soft annealing: 650-700℃& ~; i' J1 ~% g2 |$ S6 P
Hardening in oil: 900-950℃- i7 n! f6 v$ Q8 h4 P
Tempering: 580-680℃
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