|
|
发表于 2009-3-27 12:31:38
|
显示全部楼层
来自： LAN
AISI 4140
$ F4 _$ A% e bCategory Steel 6 L- d0 E2 Q0 p5 }, E6 J
Class Alloy steel ; C0 S) p6 g6 C4 Z
Type Standard 3 }1 }, J' |# {9 h
Common Names Chromium-molybdenum steel
0 o4 P" w& f5 {0 pDesignations France: AFNOR 40 CD 4 , AFNOR 42 CD 4
4 d4 n, G1 M6 l! SGermany: DIN 1.7225 ) y7 S8 I5 |' W7 B. H
Italy: UNI 38 CrMo 4 KB , UNI 40 CrMo 4 , UNI G 4O CrMo 4
, i9 @- c5 c5 t5 WJapan: JIS SCM 4 , JIS SCM 4 H
1 b0 o: { }5 CSweden: SS 2244 5 T& ]% f m4 Q0 V
United Kingdom: B.S. 708 A 42 , B.S. 708 M 40 , B.S. 709 M 40
2 g7 o' V5 w! r5 x" k2 F& MUnited 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
W, H9 w3 F! h& L% bElement Weight %
$ H& `% g6 C# T! g+ w# I. p0 xC 0.38-0.43 7 e( Y) m& ^ m K/ P7 ~ g5 ?
Mn 0.75-1.00 # e4 a8 ^# k* ~) K* [2 C$ I
P 0.035 (max) + N( T0 O8 E; C8 Z+ M8 }+ _/ b
S 0.04 (max)
: g5 O3 O" u. U9 rSi 0.15-0.30 " @& n1 Y) {5 T& T0 G
Cr 0.80-1.10 - l F# {3 D A: }' ?1 G8 \- r( p
Mo 0.15-0.25 / x/ t# Y$ n$ ^& Z: q% j
Mechanical Properties
q# G2 y5 | w2 v+ E$ _* d: o' m: `5 |0 t- l% f, @9 Z
Density (×1000 kg/m3) 7.7-8.03
: g# F8 n5 e2 ~# f$ V# {Poisson's Ratio 0.27-0.30% i+ D/ Y/ O+ b* Q1 a
Elastic Modulus (GPa) 190-210
9 u- }; m1 d0 u& E3 TTensile Strength (Mpa) 655.0 annealed at 815°C Yield Strength (Mpa) 417.1 9 N- U0 ^# w4 L+ ~& h
Elongation (%) 25.7
, \' q/ m* {) ^) w- e& H9 xReduction in Area (%) 56.9 ) v5 B8 g1 y/ @$ X
Hardness (HB) 197 annealed at 815°C more 2 D1 I2 t* _2 ^; i0 k1 }6 h
Impact Strength (J)
/ n5 ~, p) a2 [4 G8 r8 z4 w: q(Izod) 54.5 , D$ R8 u3 _4 Q$ \ ^
Thermal Properties* K; @1 v Y! i
Thermal Expansion (10-6/ºC) 12.3 hardened, tempered 600°C
6 ]' }! b6 d8 ~5 q% kThermal Conductivity (W/m-K) 42.7
' z. W0 _% M8 H" {, ?Specific Heat (J/kg-K) 473
3 b( ?9 O8 c1 z+ z. eElectric Properties
4 o; P7 y7 R6 H' t/ N/ M0 S, ?+ Q- n' G" dElectric Resistivity (10-9W-m) 222 |
|
