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回火溫度與硬度 3 D- w9 C1 E+ t/ p1 l. W7 \0 H
材料 140 160 180 200 220 240 260 280 300 320 ) G* Q0 M: v* W& @
45 59.8 59.2 58.4 57.6 56.6 55.6 54.5 53.3 52.0 50.6
Y4 d9 k' j! _% y `/ I40Cr 64.5 63.0 61.5 60.0 58.5 57.0 55.5 54.0 52.5 51.0
: t2 l6 T; }4 ?7 c5 W' K) X, H, N5CrMnMo 60.6 59.4 58.2 57.0 55.8 54.6 53.4 52.2 51.0 49.8 1 V# |2 k, j% S, P! b
T8 65.7 64.0 62.2 60.5 58.7 56.9 55.2 53.4 51.7 49.9 ; ?$ @2 K8 E* o! C
T10 70.0 68.2 66.3 64.5 62.7 60.9 59.1 57.2 55.4 53.6 6 L e6 Z2 V6 b# a! D$ f
T12 63.8 62.5 61.3 60.0 58.8 57.5 56.3 55.0 53.8 52.5 ' k# ?1 H4 F3 f$ a+ C
GCr15 640 626 613 600 586 573 560 546 533 520
8 E+ b! a: v5 ? t% l; ~' h6 |30CrMo 53.8 52.5 51.3 50.0 48.8 47.5 46.3 45.0 43.8 42.5
9 E' t2 D5 E4 m1 V- O1 l6 b38CrMoAl 58.4 57.6 56.8 56.0 55.2 54.4 53.6 52.8 52.0 51.2
" N1 K _( v9 _. s" D9CrSi 64.3 63.7 63.0 62.3 61.7 61.0 60.3 59.7 59.0 58.3 ) G7 _) a$ C- \; e
材料 340 360 380 400 420 440 460 480 500 520 6 _, f2 b8 W, p5 p" |( c' H
45 49.2 47.6 46.0 44.2 42.4 40.5 38.5 36.4 34.2 32.0
6 `1 E: S3 M& M! N/ _0 J/ q& W4 T40Cr 49.5 48.0 46.5 45.0 43.5 42.0 40.5 39.0 37.5 36.0 $ w8 x- A2 p1 H, R$ G
5CrMnMo 48.6 47.4 46.2 45.0 43.8 42.6 41.4 40.2 39.0 37.8
# i* @ d' k0 o0 c3 T" `" I0 ZT8 48.2 46.4 44.7 42.9 41.2 39.4 37.6 35.9 34.1 32.4
9 Y. P4 p7 C- QT10 51.8 50.0 48.2 46.3 44.5 42.7 40.9 39.1 37.2 35.4 0 S: y# D: k6 Y9 Y ]: N
T12 51.3 50.0 48.8 47.5 46.3 45.0 43.8 42.5 41.3 40.0
) I" F" g4 B: w# s- YGCr15 506 493 480 466 453 440 426 413 400 386 # R% J0 X1 M: S5 ?- t
30CrMo 41.3 40.0 38.8 37.5 36.3 35.0 33.8 32.5 31.3 30.0 3 i+ K3 ^! V% u; D4 B: s- E
38CrMoAl 50.4 49.6 48.8 48.0 47.2 46.4 45.6 44.8 44.0 43.2
& w! [* B( B& @$ W9CrSi 57.7 57.0 56.3 55.7 55.0 54.3 53.7 53.0 52.3 51.7 + Q' R7 n7 V( j9 l$ [8 S
材料 540 560 580 600 620 640 660 680 700 720
' C3 S) s3 ~8 G$ k! P( v45 29.6 27.2 24.6 22.0 225 214 200 189 178 167 / A% }3 F! c) C" Z" s% d
40Cr 34.5 33.0 31.5 30.0 28.5 27.0 25.5 24.0 22.5 230 ' ^% n+ \6 n6 u; C) j7 |. f
5CrMnMo 36.6 35.4 34.2 33.0 31.8 30.6 29.4 28.2 27.0 25.8 ' v( {( A1 {; c, k
T8 30.6 28.9 27.1 25.4 23.6 21.9 228 221 213 205
- w: b5 }) i% z3 x1 v W2 DT10 33.6 31.8 30.0 28.2 26.3 24.5 22.7 231 224 215 8 u+ q. y8 y2 R9 P
T12 38.8 37.5 36.3 35.0 33.8 32.5 31.3 30.0 28.8 27.5
: h9 `. t$ ]( L6 J6 EGCr15 373 360 346 333 320 306 293 280 266 253
( X9 H0 \' @; T8 u8 o8 p30CrMo 28.8 27.5 26.3 25.0 23.8 22.5 21.3 226 223 217 7 B, B; P* W+ H$ p, E# Q3 L
38CrMoAl 42.4 39.0 37.0 35.0 33.0 31.0 29.0 27.0 25.0 23.0
0 Y8 u9 [& `( O' c& a: B8 l9CrSi 51.0 50.3 49.7 49.0 48.3 47.7 47.0 46.3 45.7 45.0
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