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发表于 2013-4-7 14:20:33
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来自: 中国广东广州
hyc1754 发表于 2013-4-7 13:51 static/image/common/back.gif# G6 o, z$ ?; D ~
谢谢你的热心帮助!6 E0 U' f/ @4 _ x3 R) ~; h% h {
标准里写的是1144而不是C-1144,我不确定他们是不是完全一样;
" `* S* ^$ `+ y9 H! E关于机械性能,A370 ... + `8 z5 w7 ]! N
前面C为 cold roll steel 这种钢除了切削性能很好外,力学性能要求不是很高
, [% N. l1 I- j# w2 ]3 s! QApplications include cold drawn or finished bar, cold punched nuts, split rivets, machine screws, and wood screws. Post oil quenched hardness: 30 HRC surface, 27 HRC half-radius, 22 HRC center.
4 _7 H& w9 o; R d: kDensity 7.87 g/cc * t/ B1 [, P$ L+ y
Hardness, Brinell 192 192 , C' X& ^2 V) b V2 G2 X" P
Hardness, Knoop 214 214 Converted from Brinell hardness. # D- M+ v1 i. E1 j) o! n& }8 z) E
Hardness, Rockwell B 91 91 Converted from Brinell hardness.
$ D" P" f- S$ c: F+ FHardness, Rockwell C 11 11 Converted from Brinell hardness. Value below normal HRC range, for comparison purposes only.# m4 Z6 L& M2 G- P
Hardness, Vickers 201 201 Converted from Brinell hardness.
- K% U' k( p( ~- v% |- PTensile Strength, Ultimate 650 MPa 94300 psi % U1 s2 P2 j. `
Tensile Strength, Yield 425 MPa 61600 psi
. h C+ E4 _$ B7 e2 k5 zElongation at Break 24 % 24 %
8 {& s) B/ X1 P- w' k& dReduction of Area 57.7 % 57.7 % ! n8 v3 }3 B+ e9 m! f7 k
Modulus of Elasticity 200 GPa 29000 ksi Typical for steel
2 D: g4 ]+ _3 G* m9 eBulk Modulus 140 GPa 20300 ksi Typical for steel.
+ ^. s; ^8 \3 u: QPoisson's Ratio 0.29 0.29 Typical For Steel # d3 r6 _& {: [, U- F: r
Izod Impact 43 J 31.7 ft-lb normalized at 900?C, 65 J annealed at 815?C, 53 J as rolled9 U1 \# g! V* ^( U! E& B* V! ]
Shear Modulus 80 GPa 11600 ksi Typical for steel. |
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