目次へ 許容歯元曲げ応力σ0[N/mm2] 片振り引張疲れ限度を応力集中係数1.4で割った値。 |
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●調質材[参考:KHKカタログ] |
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鋳鋼 |
材料[参考] |
硬さ |
引張強さ下限 |
σ0 |
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HB |
Hv |
N/mm2 |
N/mm2 |
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SC37 |
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363 |
102 |
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SC42 |
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412 |
118 |
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SC46 |
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451 |
129 |
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SC49 |
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480 |
139 |
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SCC3 |
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539 |
155 |
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588 |
169 |
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炭素鋼焼ならし |
S25C |
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120 |
126 |
382 |
135 |
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130 |
136 |
412 |
145 |
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140 |
147 |
441 |
155 |
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S35C |
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150 |
157 |
470 |
165 |
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S43C |
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160 |
167 |
500 |
172 |
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170 |
178 |
539 |
180 |
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S48C |
S53C S58C |
180 |
189 |
568 |
186 |
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190 |
200 |
598 |
191 |
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200 |
210 |
627 |
196 |
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210 |
221 |
666 |
201 |
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220 |
231 |
696 |
206 |
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230 |
242 |
725 |
211 |
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240 |
252 |
755 |
216 |
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250 |
263 |
794 |
221 |
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炭素鋼焼入焼もどし |
S35C |
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160 |
167 |
500 |
178 |
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170 |
178 |
539 |
190 |
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180 |
189 |
568 |
198 |
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190 |
200 |
598 |
206 |
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S43C |
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200 |
210 |
627 |
216 |
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S48C |
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210 |
221 |
666 |
225 |
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220 |
231 |
696 |
230 |
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S53C S58C |
230 |
242 |
725 |
235 |
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240 |
252 |
755 |
240 |
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250 |
263 |
794 |
245 |
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260 |
273 |
823 |
250 |
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270 |
284 |
853 |
255 |
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280 |
295 |
882 |
255 |
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290 |
305 |
911 |
260 |
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合金鋼焼入れ焼もどし |
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220 |
231 |
696 |
245 |
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SMn443 |
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230 |
242 |
725 |
255 |
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240 |
252 |
755 |
270 |
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250 |
263 |
794 |
279 |
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260 |
273 |
823 |
289 |
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SCM435 SNC836 |
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270 |
284 |
853 |
304 |
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SCM440 |
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280 |
295 |
882 |
314 |
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SNCM439 |
290 |
305 |
911 |
323 |
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300 |
316 |
951 |
333 |
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310 |
327 |
980 |
343 |
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320 |
337 |
1009 |
358 |
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330 |
347 |
1039 |
368 |
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340 |
358 |
1078 |
382 |
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350 |
369 |
1107 |
392 |
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360 |
380 |
1147 |
402 |
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