灰铸铁的硬度与抗拉强度间的关系
(
摘自
GB
/
T9439
—
1988
)
|
抗拉强度
σ
b
/
MPa
|
RH
|
||||
|
0
.
8
|
0
.
9
|
1
.
0
|
1
.
1
|
1
.
2
|
|
|
HBS
|
|||||
|
80
|
82
|
92
|
102
|
112
|
122
|
|
100
|
93
|
105
|
116
|
128
|
140
|
|
120
|
105
|
118
|
131
|
144
|
157
|
|
140
|
116
|
131
|
145
|
160
|
174
|
|
160
|
129
|
144
|
160
|
176
|
192
|
|
180
|
139
|
157
|
174
|
192
|
209
|
|
200
|
150
|
169
|
188
|
206
|
225
|
|
220
|
157
|
177
|
196
|
216
|
236
|
|
240
|
164
|
185
|
205
|
226
|
247
|
|
260
|
171
|
192
|
214
|
235
|
257
|
|
280
|
178
|
200
|
223
|
245
|
267
|
|
300
|
185
|
208
|
231
|
255
|
278
|
|
320
|
192
|
216
|
240
|
264
|
288
|
|
340
|
199
|
224
|
249
|
274
|
298
|
|
360
|
205
|
232
|
258
|
283
|
309
|
|
380
|
213
|
240
|
266
|
293
|
320
|
|
400
|
220
|
248
|
275
|
303
|
330
|
