|
|
发表于 2009-3-27 12:31:38
|
显示全部楼层
来自： LAN
AISI 4140: h% v& O4 Q" B- P2 o
Category Steel
) L. s8 c% P" U* s9 fClass Alloy steel
# m% L& `( q; S ~0 A7 dType Standard 1 L1 s: o4 _" E" f7 t) U
Common Names Chromium-molybdenum steel * U- W c% D8 T
Designations France: AFNOR 40 CD 4 , AFNOR 42 CD 4 ! b! |6 |4 a; d
Germany: DIN 1.7225
- l4 z/ Z% d! s$ Z9 p! h% D$ TItaly: UNI 38 CrMo 4 KB , UNI 40 CrMo 4 , UNI G 4O CrMo 4 : @, R. v: `# P
Japan: JIS SCM 4 , JIS SCM 4 H
K, t1 S z, S4 l3 F' y8 L: ISweden: SS 2244
" }) r/ H$ G# f* U9 UUnited Kingdom: B.S. 708 A 42 , B.S. 708 M 40 , B.S. 709 M 40
E: ^! q, C+ v% J% j' RUnited 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 0 f2 f: ~: J" H* ^
Element Weight % 4 X: H/ o: J4 a* E& g% ` A; g
C 0.38-0.43
. g* L7 E- q. S% _Mn 0.75-1.00 ; o: I7 B1 \% c2 }! P, l" N
P 0.035 (max)
- a }9 [- s! f+ ~* O& P+ n, T1 T8 wS 0.04 (max)
2 M- f% x* O) n& y# ]+ J6 G( z. y, [Si 0.15-0.30
4 B% X0 k1 p4 O8 y4 rCr 0.80-1.10
9 C% y* {8 F/ B+ i- w+ B" HMo 0.15-0.25 ' B4 r1 F7 m3 O0 Z1 Y, y
Mechanical Properties7 K# p x5 ?/ [* J) S
! p. ?8 i6 t( [8 O8 f) w0 B! C
Density (×1000 kg/m3) 7.7-8.03
8 y" E3 I% i0 t4 V9 A- X3 ^Poisson's Ratio 0.27-0.30
) g1 z: ^, G* r( hElastic Modulus (GPa) 190-210) Z/ h0 R- {6 s' _0 q
Tensile Strength (Mpa) 655.0 annealed at 815°C Yield Strength (Mpa) 417.1 7 {, w% c* T" P( I5 ]% ]5 m) u
Elongation (%) 25.7 , W# H" ^* f/ ~: W( t
Reduction in Area (%) 56.9 0 Q7 l# N3 L2 a5 U# E- Z9 N
Hardness (HB) 197 annealed at 815°C more
4 Z9 L( U5 y" z7 H/ p' F0 DImpact Strength (J)6 x$ P( i* G# c6 w8 [4 {
(Izod) 54.5
* e/ D; e3 U1 |8 P4 q- t; d. E' dThermal Properties
# _( \) e k1 yThermal Expansion (10-6/ºC) 12.3 hardened, tempered 600°C
8 H' |* ]. m! {) p: k9 c9 g: j+ KThermal Conductivity (W/m-K) 42.7, U9 m- D# Z4 R8 A3 s1 F) J
Specific Heat (J/kg-K) 473 $ B; ~- j" C( m6 G% _
Electric Properties
9 [* P% ?) T1 UElectric Resistivity (10-9W-m) 222 |
|
