|
|
发表于 2009-3-27 12:31:38
|
显示全部楼层
来自： LAN
AISI 4140
$ |* y& p* v% P6 J6 y) x) Z. lCategory Steel % G* z. E' E& s3 @
Class Alloy steel 9 E! p& ?( x( X& D5 P* Z% X
Type Standard
v& N( |' Q9 A l: FCommon Names Chromium-molybdenum steel & @3 F# Q( D* \: `4 t
Designations France: AFNOR 40 CD 4 , AFNOR 42 CD 4
: U, B4 U# _, q8 O' U, uGermany: DIN 1.7225 5 q- ~3 V8 u8 v# W, h
Italy: UNI 38 CrMo 4 KB , UNI 40 CrMo 4 , UNI G 4O CrMo 4 1 l" P; B6 v# d0 l( Z. e* @! s
Japan: JIS SCM 4 , JIS SCM 4 H
7 q7 z+ P) l2 N, OSweden: SS 2244 , I0 X$ b$ o! \' Q; q9 m
United Kingdom: B.S. 708 A 42 , B.S. 708 M 40 , B.S. 709 M 40 6 s y" A* ]2 \, ]# r0 ~* E9 s
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
' E! A, V, V, g; H; rElement Weight %
5 n4 F8 M6 h- S- ^ x* }! [7 {1 c/ \3 OC 0.38-0.43 # a& h' f) L5 e! J6 H
Mn 0.75-1.00 , H) i6 b9 y& M/ H
P 0.035 (max) 5 G- ~- ^+ J% K6 \, Q" c& ]$ k
S 0.04 (max) 0 H2 ^* d3 ^( b1 j" t
Si 0.15-0.30
7 n4 b4 F8 @$ `& uCr 0.80-1.10 0 f. Q: V- c9 |& P2 l
Mo 0.15-0.25 9 E% J+ u$ m+ {' O q. U
Mechanical Properties
& u% C, w4 `" {7 _& Q4 X
& M" L* P$ v6 V( zDensity (×1000 kg/m3) 7.7-8.03 % |) j9 l* Y6 C. }# p* Y
Poisson's Ratio 0.27-0.30( F# g8 e; q5 {$ M: y, r% \
Elastic Modulus (GPa) 190-210. A9 d* w2 c4 X+ D7 b6 _' ?
Tensile Strength (Mpa) 655.0 annealed at 815°C Yield Strength (Mpa) 417.1 # G6 ~ D- \4 m( h$ S% _
Elongation (%) 25.7
/ p' }1 @: t: U* w0 j$ eReduction in Area (%) 56.9 6 L. C- R' A* v! N0 |! A: U) B6 q, j
Hardness (HB) 197 annealed at 815°C more
$ l$ Z2 m8 Q' f0 |Impact Strength (J): y% ~) S9 [3 } n
(Izod) 54.5
4 Y0 Y' {+ _4 o$ O6 n, b1 X6 r7 wThermal Properties
+ M' G/ s" ^8 K* o+ {9 CThermal Expansion (10-6/ºC) 12.3 hardened, tempered 600°C
, H+ V8 |% n6 R: C0 @5 qThermal Conductivity (W/m-K) 42.7
/ I8 A* |* g' h: N6 y' Z- `, a" SSpecific Heat (J/kg-K) 473
0 [% b/ w! R0 e# M5 G# {Electric Properties5 j& c# i1 q K0 d
Electric Resistivity (10-9W-m) 222 |
|
