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发表于 2011-11-10 11:01:06
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本帖最后由 wenjuanzhi2008 于 2011-11-10 11:11 编辑 5 D" x& Z: w3 M
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Material designation: 16CrMo4
2 `$ Y' O# R! D* L2 d7 @8 h" D Diagram No.: 56
( {7 ~9 O) k0 N- Z5 n DIN designation: 16CrMo4# G% }( ]; b. K+ U% R
Mat.No. (Wr.Nr.) designation: 1.7242
B/ F8 Q8 v4 O# Z 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.2 L5 d6 T+ m1 s5 b; @1 H7 P
Steel group: Alloy special structural steels
! n; }6 w0 Z* A) D6 g7 G Applications: Forgings for construction of steam turbines (<= 530 °C)/ J: |$ {8 @0 ?4 e0 s3 P2 h# |
Comment: Alloy special structural steels: Structural steels, Cr-Mo-steels with < 0,35% Mo, Cr-Mo-B-steels
( G% n5 w7 y" W Source: KTS 2008" @' @6 T. B" W- n9 ~/ p
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Heat Treatment, |- Y4 \/ M3 ` }* V
Hot working: 850-1100℃
! }0 z/ A6 D4 @% I2 b5 V Soft annealing: 650-700℃$ q5 Q& G* b8 ^! m8 d3 Q0 d
Hardening in oil: 900-950℃
* {7 Y% f P$ c- B Tempering: 580-680℃
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