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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
! N( x: u: m+ q0 d- e! s谢谢你的热心帮助!
' Z& t. b# v! J$ h# s0 S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;
" O+ `- [- q# L7 [' r( V: f9 H9 U关于机械性能,A370 ...
5 J& a6 M, U5 M9 e( S' 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9 B! k2 X R8 [
Applications 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./ ^) L. P. A* G3 }. I) G; s
Density 7.87 g/cc . p4 u4 }5 e- {+ `9 [- J' z
Hardness, Brinell 192 192
2 i+ `& ?# J. j* x# }3 k7 e# c. Y$ P8 XHardness, Knoop 214 214 Converted from Brinell hardness.
. K8 p1 M9 `& _6 l1 ^& iHardness, Rockwell B 91 91 Converted from Brinell hardness.
b( L' r. m9 r6 O% G) c8 Q9 iHardness, Rockwell C 11 11 Converted from Brinell hardness. Value below normal HRC range, for comparison purposes only.5 P D0 C% y9 b$ ?9 D
Hardness, Vickers 201 201 Converted from Brinell hardness. 1 c" S* s% W' o6 T! c4 h$ _
Tensile Strength, Ultimate 650 MPa 94300 psi
+ ]4 C' y3 W4 v8 w$ m/ `$ |# }Tensile Strength, Yield 425 MPa 61600 psi 9 i8 _; S6 D3 [, b i
Elongation at Break 24 % 24 % 2 Y5 s8 i" C Y/ a0 r8 e
Reduction of Area 57.7 % 57.7 % ( v8 B; O3 \0 v& k' B4 i4 u4 G: c$ o
Modulus of Elasticity 200 GPa 29000 ksi Typical for steel9 T7 E$ s- V! B/ \
Bulk Modulus 140 GPa 20300 ksi Typical for steel. V1 i q% ?! g% X v5 W) E
Poisson's Ratio 0.29 0.29 Typical For Steel
" G C$ o% i+ o0 d$ Y! PIzod Impact 43 J 31.7 ft-lb normalized at 900?C, 65 J annealed at 815?C, 53 J as rolled
1 t- ?7 n. f- k ?. s# pShear Modulus 80 GPa 11600 ksi Typical for steel. |
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