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¤Æ¾Ç¤¸¯À | % | Impact ¼vÅT |
Carbon ( C )ºÒ | 0.20 max |
A= Not required. BR= 27 n¨D«Ç·Å¤U27µJ¦Õ BO= 25 Joules at 0 deg Cel. C= 25 Joules at -20 deg Cel. |
Manganese ( Mn )¿ø | 1.60 max | |
Sulfur ( S )²¸ | 0.045 max | |
Phosphorus ( P )ÁC | 0.045 max | |
Silicon ( Si )Öº | 0.45 max | |
Carbon equivalent ºÒ·í¶q | 0.50 max | |
Nitrogen ( N2 ) ´á | 0.012 % ( 120 ppm) |
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©Ô¦ù±j«× | 540 Mpa | ©Ò¦³«p«× |
©}ªA±j«× | 410 Mpa | < 20 mm |
390 Mpa | 20-40 mm | |
380 Mpa | > 40 mm | |
©Ô¦ù²v% | 20 % min | |
Ås¦±¦Ü25mm «p«× | 2T | |
> 25 mm thickness | Not required |
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