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发表于 2009-3-27 12:31:38
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来自： LAN
AISI 41409 B$ E$ N/ g0 z$ l0 G8 V( t
Category Steel 1 P0 P; [# z6 }% x1 b: Q8 j
Class Alloy steel - J+ b2 C7 ]. p: E$ r, Q; V8 p2 s
Type Standard + ]+ ?# l& C- V, i
Common Names Chromium-molybdenum steel # D% h8 Z2 ^+ O; A, }- F
Designations France: AFNOR 40 CD 4 , AFNOR 42 CD 4
( x2 t# @* l7 x4 x9 b+ h* Z# @Germany: DIN 1.7225 ; b- Y- ?7 h" [* n7 _/ }/ o
Italy: UNI 38 CrMo 4 KB , UNI 40 CrMo 4 , UNI G 4O CrMo 4 ! C7 Z$ W$ O( @# i
Japan: JIS SCM 4 , JIS SCM 4 H 5 O: e: o1 z) _: h7 ?+ M3 _# j: V
Sweden: SS 2244 3 c/ M9 e3 K% h* E/ j( j& Z
United Kingdom: B.S. 708 A 42 , B.S. 708 M 40 , B.S. 709 M 40 9 s, x% \: ]: J) W
United States: AMS 6378 , AMS 6379 , AMS 6381B , AMS 6382 , AMS 6382G , AMS 6390 , AMS 6390A , AMS 6395 , ASTM A322 , ASTM A331 , ASTM A505 , ASTM A519 , ASTM A547 , ASTM A646 , MIL SPEC MIL-S-16974 , SAE J404 , SAE J412 , SAE J770 , UNS G41400 : ~! r0 X6 R: j9 `- T+ y) T
Element Weight %
2 i& F8 D0 j; x/ lC 0.38-0.43
- \$ P% _* p5 A& X j: e5 s) sMn 0.75-1.00
^; y- ^6 q! A) q5 l& A! J- A' pP 0.035 (max)
& x4 i) X2 v; ZS 0.04 (max) 2 j0 e: h3 q: L8 u
Si 0.15-0.30
; q. b, R5 Y" KCr 0.80-1.10 ) H2 l- m4 I. v" f+ ]
Mo 0.15-0.25 / |4 P1 r3 {% M8 T, x
Mechanical Properties
/ l# [2 P+ t# C
; n- R$ p1 l- jDensity (×1000 kg/m3) 7.7-8.03 ) I+ g% s; w3 A) [
Poisson's Ratio 0.27-0.30
% b/ T8 g) Z' }: W$ s+ DElastic Modulus (GPa) 190-2103 R' S% z. E/ ~1 [1 n+ F
Tensile Strength (Mpa) 655.0 annealed at 815°C Yield Strength (Mpa) 417.1 ; V7 L5 u' k X$ c/ X- Z( k2 T5 J
Elongation (%) 25.7
# A- i% B; ~3 R2 f. W) F7 JReduction in Area (%) 56.9
" w1 S7 }- T0 l6 r; j# iHardness (HB) 197 annealed at 815°C more & }6 n& ?4 J S. ^
Impact Strength (J)
" u. v: b8 l# K8 _/ k0 L8 ?(Izod) 54.5
0 O" c Z3 \# e0 }3 rThermal Properties
" B0 F4 }, h: c0 {Thermal Expansion (10-6/ºC) 12.3 hardened, tempered 600°C
8 w2 W/ V8 W' u9 W# l0 u* lThermal Conductivity (W/m-K) 42.7
2 B0 J C$ T& U1 ]; qSpecific Heat (J/kg-K) 473
+ h1 m# \% ~; ?% {. kElectric Properties* n. B- U) P2 W
Electric Resistivity (10-9W-m) 222 |
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