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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
& r. F3 I8 b7 `2 b u谢谢你的热心帮助!
8 U. Q0 h2 f* ]+ @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;+ X& `: f3 d+ N8 l$ ]$ D3 h
关于机械性能,A370 ... + Z& H2 H# w! t0 }
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6 T2 m% L6 [3 q9 v
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.
3 A/ } p. o% n+ jDensity 7.87 g/cc . ?$ t$ v Y. K. c6 P9 S! R: o
Hardness, Brinell 192 192
# `" q) K) i8 a% `; EHardness, Knoop 214 214 Converted from Brinell hardness. " {( y n5 ?; j8 c9 L, Y: U! j
Hardness, Rockwell B 91 91 Converted from Brinell hardness. . @4 |8 F( z7 X$ P/ W% z( [( H* R/ w
Hardness, Rockwell C 11 11 Converted from Brinell hardness. Value below normal HRC range, for comparison purposes only.9 d1 [9 s4 z, j* R6 G
Hardness, Vickers 201 201 Converted from Brinell hardness. 2 _& p# V1 d" a8 Z: O: c
Tensile Strength, Ultimate 650 MPa 94300 psi ) _' G0 P7 ^6 t3 u% x# U4 |' Z
Tensile Strength, Yield 425 MPa 61600 psi ( Q) f4 l) }- A# d
Elongation at Break 24 % 24 % 8 v R+ g9 M m
Reduction of Area 57.7 % 57.7 %
& O) ~" o) M3 A1 x& p4 m1 |Modulus of Elasticity 200 GPa 29000 ksi Typical for steel$ J: V+ M) i" {# v: H2 n
Bulk Modulus 140 GPa 20300 ksi Typical for steel. % L+ [' ~! `! S u
Poisson's Ratio 0.29 0.29 Typical For Steel
' e# Y% r' r- ^6 j7 z& T9 lIzod Impact 43 J 31.7 ft-lb normalized at 900?C, 65 J annealed at 815?C, 53 J as rolled
, U( e3 a& a1 W3 s9 b# H1 ^Shear Modulus 80 GPa 11600 ksi Typical for steel. |
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