1、 KSKSKSKSKSKSKSK KSKSKS KSKSK KSKS KSK KS KS D 3751 KS D 3751:2008 2008 9 10 http:/www.kats.go.krKS D 3751:2008 : ( ) ( ) ( ) ( ) ( ) ( ( ) POSCO ( ) KIST ( ) : (http:/www.standard.go.kr) : : 1963 9 20 : 2008 9 10 2008-0521 : : ( 02-509-7274) (http:/www.kats.go.kr). 10 5 , . KS D 3751:2008 Carbon to
2、ol steels 1999 2 ISO 4957, Tool steels . 1 ( .) . 2 . . ( ) . KS B 0805, KS B 0806, KS B 0811, KS B 0817, KS D 0001, KS D 0204, KS D 0208, KS D 0210, KS D 0213, KS D 0216, KS D 1650, KS D 1652, KS D 1654, X KS D 1658, KS D 1659, KS D 1801, KS D 1802, KS D 1803, KS D 1804, KS D 1805, KS D 1806, KS D
3、1807, KS D 3751:2008 2 KS D 1808, KS D 1810, KS D 3500, , , 3 11 1 . 1 STC140(STC 1) STC120(STC 2) STC105(STC 3) STC95(STC 4) STC 90 STC85(STC 5) STC 80 STC75(STC 6) STC 70 STC65(STC 7) STC 60 STC x KS . KS ISO B . 4 a) . b) 4S . 4S . c) . KS D 0207 . 5 10.1 2 . KS D 3751:2008 3 2 a% C Si Mn P S STC
4、 140 1.30 1.50 0.10 0.35 0.10 0.50 0.030 0.030 , STC 120 1.15 1.25 0.10 0.35 0.10 0.50 0.030 0.030 , , , , , STC 105 1.00 1.10 0.10 0.35 0.10 0.50 0.030 0.030 , , , , , , STC 95 0.90 1.00 0.10 0.35 0.10 0.50 0.030 0.030 , , , , , , , , , STC 90 0.85 0.95 0.10 0.35 0.10 0.50 0.030 0.030 , , , STC 85
5、0.80 0.90 0.10 0.35 0.10 0.50 0.030 0.030 , , , , , , , , STC 80 0.75 0.85 0.10 0.35 0.10 0.50 0.030 0.030 , , STC 75 0.70 0.80 0.10 0.35 0.10 0.50 0.030 0.030 , , , , , STC 70 0.650.75 0.10 0.35 0.10 0.50 0.030 0.030 , , , STC 65 0.60 0.70 0.10 0.35 0.10 0.50 0.030 0.030 , , , STC 60 0.55 0.65 0.10
6、 0.35 0.10 0.50 0.030 0.030 , , a Cu: 0.25 %, Ni: 0.25 %, Cr: 0.30 % . 6 10.2 3 . B . . KS D 3751:2008 4 3 HBW STC140 STC120 STC105 STC95 STC 90 STC85 STC 80 STC75 STC 70 STC65 STC 60 750 780 750 780 750 780 740 760 740 760 730 760 730 760 730 760 730 760 730 760 730 760 217 217 212 207 207 207 192
7、192 183 183 183 7 10.2 4 4 . , 4 10 . A . 4 HRC STC140 STC120 STC105 STC95 STC 90 STC85 STC 80 STC75 STC 70 STC65 STC 60 780 780 780 780 780 780 790 790 800 800 810 180 180 180 180 180 180 180 180 180 180 180 63 62 61 61 60 59 58 57 57 56 55 8 , , 8.1 8.1.1 . KS D 3751:2008 5 8.1.2 5 . 5 : mm 10 11
8、12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 32 34 36 38 40 42 44 46 48 50 55 60 65 70 75 80 85 90 95 100 110 120 130 140 150 5 . 8.1.3 6 . 6 : mm a10 16 6.03.0+16 30 7.03.0+30 150 %5.20.1+ 70 % 1 10 mm 150 mm . 2 6 . a . 8.2 8.2.1 KS D 3500 . 8.2.2 . a) KS D 3500 4. a) . b) KS D 3500 4.
9、 b) 4. c) . 8.2.3 KS D 3751:2008 6 . a) KS D 3500 5. . , 160 mm , 160 mm . b) . 1) 160 mm 7 . 2) 160 mm . 7 : mm 1 250 1 250 1 600 1 600 2 000 2 000 2 500 2 500 3 000 3 000 1.60 1.60 4.00 4.00 6.30 6.30 10.0 10.0 25.0 25.0 63.0 63.0 160 27 24 21 18 15 12 12 30 27 24 21 18 15 12 30 27 24 21 18 15 33
10、30 24 21 18 39 36 27 24 21 42 39 30 27 24 1 (stretch level) . 2 4 000 mm 4 000 mm . 3 . 4 . 5 . 8.3 , , . 9 10.3 8 . . KS D 3751:2008 7 8 : mm 15 0.30 15 25 0.50 25 50 0.80 50 75 1.10 75 100 1.40 100 130 1.80 130 150 2.00 1 150 mm . 2 8 . 10 10.1 a) KS D 0001 4. . b) . KS D 1650, KS D 1652, KS D 165
11、4, KS D 1658, KS D 1659 10.2 a) . b) 1 . c) 10.2 b) 15 mm 20 mm . 15 mm 15 mm20 mm 20 mm . . 3 4 . d) . KS B 0805 KS B 0806 KS B 0811 10.3 KS D 0216 4.1 (DM T) . 11 KS D 3751:2008 8 11.1 . a) KS D 0001 . b) 5. . c) 6. . d) 7. . e) , , 8. . f) 9. . g) 10. . 11.2 11.1 , . , , , , , . KS D 0210 KS D 02
12、04 KS D 0208 KS D 0213 KS B 0817 . , . 12 . , ( ), 30 mm . . a) b) ( ) c) d) e) 13 KS D 0001 9. . 11.2 . KS D 3751:2008 9 A ( ) A.1 2 A.1 . , 4 . A.1 () STC140 STC120 STC105 STC95 STC 90 STC85 STC 80 STC75 STC 70 STC65 STC 60 750 810 750 810 750 810 750 810 750 810 750 810 760 820 760 820 770 830 77
13、0 830 780 840 150 200 150 200 150 200 150 200 150 200 150 200 150 200 150 200 150 200 150 200 150 200 KS D 3751:2008 10 B ( ) KS B.1 KS KS (ISO 4957) B.1 B.1 KS KS ISO STC140 STC120 C120U STC105 C105U STC95 STC90 C90U STC85 STC80 C80U STC75 STC70 C70U STC65 STC60 135513 7017 (02)60094114 (02)600948878 http:/ Korean Agency for Technology and Standards http:/www.kats.go.kr KS D 3751:2008 KSKSKS SKSKS KSKS SKS KS SKS KSKS SKSKS KSKSKS Carbon tool steels ICS 77.080.20