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| Si | Fe | Cu | Mn | Mg | Cr | Zn | Ti | ¨ä¥¦ | Al |
Max 0.4 | Max 0.4 | Max 0.1 | 0.4-1.4 | 4-4.9 | 0.05-0.25 | Max0.25 | Max0.15 | 0.05 | ¾l¶q |
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| «p«×/mm | §Ü©Ô±j«×Rm/MPa | ³W©w«D¤ñ¨Ò©µ¦ù±j«×Rp0.2/MPa | Â_«á¦ùªø²va/% | Ås¦±¥b®|b | ||
| A50mm | A | 90«× | 180«× | |||
| ¤£¤p©ó | ||||||
1.5-3 | 305 | 215 | 8 | - | 2.0t | - |
>3-6 | 10 | - | 2.5t | - | ||
| >6-12.5 | 12 | - | 4.0t | - | ||
| >12.5-40 | - | 10 | - | - | ||
>40-80 | 285 | 200 | - | 10 | - | - |
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