AISI 4340 é¼ä¸¸æ£ã·ã¼ã ãã¬ã¼ããJIS SNCM439ãDIN 1.6563
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AISI 4340 åéé¼ã¯ãã¯ãã ãããã±ã«ãã¢ãªããã³ãå«ãç±å¦çå¯è½ãªä½åéé¼ã§ããç±å¦çãããç¶æ ã§é«ãéæ§ã¨å¼·åº¦ãåãã¦ãã¾ãã
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次ã®è¡¨ã¯ãAISI 4340 åéé¼ã®åå¦çµæã示ãã¦ãã¾ãã
| è¦ç´ | ã³ã³ãã³ã (%) |
|---|---|
| éãé | 95.195 – 96.33 |
| ããã±ã«ãNi | 1.65 – 2.00 |
| ã¯ãã ãCr | 0.700 – 0.900 |
| ãã³ã¬ã³ãããã½ã¿å· | 0.600 – 0.800 |
| çç´ ãC | 0.370 – 0.430 |
| ã¢ãªããã³ãã¢ãªããã³ | 0.200 – 0.300 |
| ã·ãªã³ã³ãSi | 0.150 – 0.300 |
| ç¡«é»ãS |  0.0400 |
| ãªã³ãP |  0.0350 |
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AISI 4340 åéé¼ã®ç©ççç¹æ§ã次ã®è¡¨ã«ç¤ºãã¾ãã
| ãããã㣠| ã¡ããªã㯠| ã¤ã³ããªã¢ã« |
|---|---|---|
| å¯åº¦ | 7.85g/cm3 | 0.284ãã³ã/ã¤ã³ã3 |
| èç¹ | 1427â | 2600°F |
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ç¼ããªã¾ãããã AISI 4340 åéé¼ã®æ©æ¢°çç¹æ§ã次ã®è¡¨ã«ç¤ºãã¾ãã
| ãããã㣠| ã¡ããªã㯠| ã¤ã³ããªã¢ã« |
|---|---|---|
| æå¼µå | 745MPa | 108000 psi |
| éä¼å¼·åº¦ | 470MPa | 68200 psi |
| ä½ç©å¼¾æ§ç (é¼ã«å ¸åç) | 140GPa | 20300 ksi |
| ããæå¼¾æ§ç (é¼ã«å ¸åç) | 80GPa | 11600ksi |
| å¼¾æ§ç | 190ï½210GPa | 27557-30458 ksi |
| ãã¢ã½ã³æ¯ | 0.27-0.30 | 0.27-0.30 |
| ç ´æ伸㳠| 22% | 22% |
| é¢ç©ã®åæ¸ | 50% | 50% |
| 硬度ãããªãã« | 217 | 217 |
| 硬度ããã¼ãï¼ããªãã«ç¡¬åº¦ããæç®ï¼ | 240 | 240 |
| 硬度ãããã¯ã¦ã§ã« B (ããªãã«ç¡¬åº¦ããæç®) | 95 | 95 |
| 硬度ãããã¯ã¦ã§ã« C (ããªãã«ç¡¬åº¦ããæç®ãé常㮠HRC ç¯å²ãä¸åãå¤ãæ¯è¼ã®ã¿ãç®çã¨ãã¦ãã¾ã) | 17 | 17 |
| 硬ããããã«ã¼ã¹ï¼ããªãã«ç¡¬ãããæç®ï¼ | 228 | 228 |
| 被åæ§ (ç¼éããã³å·éå¼æãAISI 1212 é¼ã®è¢«åæ§ 100 ã«åºã¥ãã) | 50 | 50 |
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次ã®è¡¨ã¯ãAISI 4340 åéé¼ã®ç±ç¹æ§ã®æ¦è¦ã示ãã¦ãã¾ãã
| ãããã㣠| ã¡ããªã㯠| ã¤ã³ããªã¢ã« |
|---|---|---|
| ç±è¨å¼µä¿æ° (20°C/68°Fã試é¨ç油硬åã600°C (1110°F) ç¼æ»ã) | 12.3μm/mâ | 6.83 μã¤ã³ã/ã¤ã³ã°F |
| ç±ä¼å°çï¼ä»£è¡¨çãªé¼ï¼ | 44.5W/mK | 309 BTU ã¤ã³ã/æ.ft².°F |
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AISI 4340 åéé¼ã¨åçã®ãã®ä»ã®æå®ã«ã¯æ¬¡ã®ãã®ãããã¾ãã
| AMS 6359 | 6454 ã® | ASTM A331 (4340) | ASTM A711 | SAE J1397 (4340) |
| AMS 6409 | ASTM A29 (4340) | ASTM A506 (4340) | ASTM A752 (4340) | SAE J404 (4340) |
| AMS 6414 | ASTM A320 (L43) | ASTM A519 (4340) | ASTM A829 | SAE J412 (4340) |
| AMS 6415 | ASTM A322 (4340) | ASTM A646 (4340-7) | ãã«S-5000 | |
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