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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
( Q+ J* {8 | I$ a& M+ a1 O1 g* N* v8 z) [: \) y2 m
Material designation: 16CrMo48 k. U9 m6 n. L4 Y+ S5 L( Z
Diagram No.: 56
' W& Q: J% `2 o+ E2 Z" D DIN designation: 16CrMo4) S9 l' d. e& e w2 a
Mat.No. (Wr.Nr.) designation: 1.7242
, H8 x+ ~' j4 x3 @3 ]/ t' [ 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.: f3 D' D$ c# V) D* F8 C
Steel group: Alloy special structural steels! H# h$ q' W- k2 e# }
Applications: Forgings for construction of steam turbines (<= 530 °C)* a" G) O2 l, |+ K
Comment: Alloy special structural steels: Structural steels, Cr-Mo-steels with < 0,35% Mo, Cr-Mo-B-steels! P3 C$ f+ H7 G. }/ @
Source: KTS 2008
, \+ k% i' q5 |1 a% X7 e8 f$ u& l! A$ R3 N
Heat Treatment
/ H0 R4 D7 {6 g* s Hot working: 850-1100℃0 p+ ~5 z/ t7 s6 y8 ~5 l# [
Soft annealing: 650-700℃4 V* @) [0 i. u _* U
Hardening in oil: 900-950℃
! M; E6 Y! `7 X) G$ [2 p1 U8 t Tempering: 580-680℃
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