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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 , F8 ^ S& ^7 V9 P
- r" O3 o& _2 Q7 P& z! _# B Material designation: 16CrMo4
; e, ~5 ?$ t* A: g% p$ W+ a% H Diagram No.: 56
6 F9 }: x( h& S |4 Y+ X" E. y$ R( l& L DIN designation: 16CrMo47 h4 Y& a. z1 R5 B
Mat.No. (Wr.Nr.) designation: 1.7242
; Y& ~1 y1 E& r6 ?+ k 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.
+ i9 W5 d/ G+ J% J/ a3 t) K' U Steel group: Alloy special structural steels% {! H+ L7 \% w5 J
Applications: Forgings for construction of steam turbines (<= 530 °C)
/ i7 r9 X/ B. e4 q& } Comment: Alloy special structural steels: Structural steels, Cr-Mo-steels with < 0,35% Mo, Cr-Mo-B-steels" _5 ]6 v" V# v9 y
Source: KTS 2008
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/ j9 Z1 b4 }5 h* X9 @% i Heat Treatment
5 B. R1 }( p4 E. V$ [& b Hot working: 850-1100℃7 j1 w$ C5 I" w
Soft annealing: 650-700℃* l) Z) e6 r7 m, v4 w' T
Hardening in oil: 900-950℃
, h, {% P( P9 L0 S6 ` Tempering: 580-680℃* ^: n) D4 p/ @
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