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发表于 2007-6-6 20:19:48
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来自： 中国
Subcategory: AISI 4000 Series Steel; Ferrous Metal; Low Alloy Steel; Medium Carbon Steel; Metal
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Close Analogs: AISI 4140H
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Key Words: AFNOR 40 CD 4, AFNOR 42 CD 4 (France), ASTM A322, ASTM A331, ASTM A505, ASTM A519, ASTM A646, B.S. 708 A 42 (UK), B.S. 708 M 40 (UK), B.S. 709 M 40 (UK), JIS SCM 4 H, JIS SCM 4, SS14 2244 (Sweden), MIL SPEC MIL-S-16974, SAE J404, SAE J412, SAE J770, DIN 1.7225, UNS G41400, AMS 6381, AMS 6382, AMS 6390, AMS 6395, IS 1570 40Cr1Mo28, IS 4367 40Cr1Mo28, IS 5517 40Cr1Mo287 U. p( b/ T+ J0 h; c
( X) ?' Y8 N+ X; Q7 ^/ oComponent Wt. %
+ @6 P0 l" }' H# _ 5 d0 y% V( h7 n9 m
9 O6 w: P* O5 X3 T) [4 XC 0.38 - 0.43
& T. K5 U5 ? I# SCr 0.8 - 1.1
# t! {% |7 r" S$ KFe 96.785 - 97.84 : f9 b+ o9 Y" g' m Y% t, w
Mn 0.7 - 1 ) Q2 I; P, ^2 t% X9 u" r8 }+ ]: d. z
Mo 0.15 - 0.25 / n7 l3 W4 z& I- y! ?
P Max 0.035 8 z: A% M- W" [- O
S Max 0.04 0 S0 d; r z( p5 D8 k+ N) E; j
Si 0.15 - 0.3 " l9 ^- X; q$ F* K/ F8 S
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! Y/ _; \/ q( T/ h0 s$ a$ r* iMaterial Notes:
6 Z% o( S! e9 h# }$ f' s; D' ANormalized: heated to 815?C, air cooled. Medium-carbon steel with high hardenability and good fatigue, abrasion and impact resistance.
0 w8 C- r6 b1 b3 f' CSubcategory: AISI 4000 Series Steel; Ferrous Metal; Low Alloy Steel; Medium Carbon Steel; Metal$ Q. h& `; M; D* W4 p' o2 Y. n
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Close Analogs: AISI 4340, AISI E4340, AISI E4340 H
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& B6 o- H7 l& IKey Words: alloy steels, UNS H43406, ASTM A304, SAE J1268, DIN 1.6565, IS 1570 40Ni2Cr1Mo28, IS 1570 40NiCr1Mo15' E3 @4 R+ n8 [/ E# M3 b; F
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Component Wt. %
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3 [) \( \ B7 B# QC 0.37 - 0.44
7 \* S( B7 M' NCr 0.65 - 0.95
1 `8 ~! \! Q, |3 _4 q0 tFe 96 * _* J ^1 U( ~ ~
Component Wt. %
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Mn 0.73 ; `4 h0 h! H; t/ f) `* d
Mo 0.2 - 0.3 ' j* M+ `7 a/ k+ d( P& X" ?* X
Ni 1.78
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$ D- I" B4 d% a0 KP Max 0.025 7 v; H% M$ [: e( _9 t4 k0 A: B0 Y
S Max 0.02 2 C9 k' j4 c) o& z$ b- @
Si 0.23 1 o+ K& D: C5 o
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Material Notes:
, x# O- C" m4 t9 Y; O7 K6 G5 QTransition temperature: - 90?C (50% Brittle)$ o( S* |' T' i* i
& e& a& \: n, M9 O* h# \2 U+ _Click here to view available vendors for this material.8 Z$ R& h2 F$ j+ y" C! Y6 U
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" h8 m7 _8 c2 a4 GPhysical Properties Metric English Comments 7 T! H- l1 p* v8 D
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Density 7.85 g/cc 0.284 lb/in?
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; M5 k4 b5 \1 O/ f. l, HMechanical Properties # a% _2 m ~/ V5 @! j& Z) g( @3 a
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$ ]5 b, K' q6 }9 k. g8 N0 a3 {- Y: @Hardness, Knoop 381 381 Converted from Rockwell C hardness. : X# ] m# z+ t( q5 D
Hardness, Rockwell C 38 38
4 P+ U" V: z" m3 U: EHardness, Vickers 368 368 Converted from Rockwell C hardness.
& q/ v3 U9 J$ Z" m8 U+ }# r# T/ ]Modulus of Elasticity 205 GPa 29700 ksi Typical for steel
/ q; g: G. {# ^0 y z3 IBulk Modulus 140 GPa 20300 ksi Typical for steel.
( P" q- u6 S5 A9 z; R6 L8 fPoisson's Ratio 0.29 0.29 Calculated
0 k, y. h) t2 r. M9 P# |Charpy Impact 20 J 14.8 ft-lb
+ W U9 n$ |, e; g" tMachinability 50 % 50 % annealed and cold drawn. Based on 100% machinability for AISI 1212 steel.
2 | d1 q. j! v! _1 l% NShear Modulus 80 GPa 11600 ksi Typical for steel |
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