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Η χημική σύνθεση των STKM11, STKM12, STKM13 και STKM14 είναι όπως ο παρακάτω πίνακας:
| Βαθμός | Χημική σύνθεση % | |||||
| ντο | Σι | ΜΝ | Π | μικρό | Σημείωση ή V | |
| Stkm11a | ≤0.12 | ≤0,35 | ≤0,60 | ≤0.040 | ≤0.040 | ▾ |
| STKM12A | ≤0,20 | ≤0,35 | ≤0,60 | ≤0.040 | ≤0.040 | - |
| STKM12B | ||||||
| STKM12C | ||||||
| STKM13A | ≤0.25 | ≤0,35 | 0,30 ~ 0,90 | ≤0.040 | ≤0.040 | - |
| STKM13B | ||||||
| STKM13C | ||||||
| Stkm14a | ≤0.30 | ≤0,35 | 0,30 ~ 1.00 | ≤0.040 | ≤0.040 | - |
| STKM14B | ||||||
| Stkm14c | ||||||
Οι μηχανικές ιδιότητες των STKM11, STKM12, STKM13 και STKM14 είναι όπως ο παρακάτω πίνακας:
| Βαθμός | Μηχανικές ιδιότητες | Δοκιμή ισοπέδωσης | Δοκιμή κάμψης | |||
| Αντοχή σε εφελκυσμό (MPa) | Αντοχή διαρροής (MPa) | Επιμήκυνση (%) | Απόσταση μεταξύ αυτά τα μέρη (D = OD) | Στροφή Γωνία | Μέσα Ακτίνα κύκλου (D = OD) | |
| Νο.11: δείγμα | ||||||
| Stkm11a | 230 (294) | - | 235 | 1/2δ | 180 ° | 4δ |
| STKM12A | 235 (343) | 218 (177) | 235 | 2/3D | 90 ° | 6δ |
| STKM12B | 240 (392) | 228 (275) | 225 | 2/3D | 90 ° | 6δ |
| STKM12C | 248 (471) | 236 (353) | 220 | - | - | - |
| STKM13A; | 238 (373) | 222 (216) | 230 | 2/3D | 90 ° | 6δ |
| STKM13B | 245 (441) | 231 (304) | 220 | 3/4δ | 90 ° | 6δ |
| STKM13C | 252 (510) | 239 (382) | 215 | - | - | - |
| Stkm14a | 242 (412) | 225 (245) | 225 | 3/4δ | 90 ° | 6δ |
| STKM14B | 251 (500) | 236 (353) | 215 | 7/8D | 90 ° | 8δ |
| Stkm14c | 256 (549) | 242 (412) | 215 | - | - | - |
September 19, 2024
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