ICS77.140.50 ISBN974-608-814-9 THAI INDUSTRIAL STANDARD.21402546 COLD ROLLED STEEL COIL STRIP AND SHEET FOR AUTOMOBILES USES 6 10400 022023300 120 69 28 2546.21402546(2)90 () () () (1995) () () (3) JISZ2201-1980 Test Pieces for Tensile Testfor Metallic MaterialsJISZ2241-1993 Method of Tensile TestforMetallic MaterialsJISG31351986 ColdRolledHighStrengthSteelSheetswithImprovedFormabilityforAutomobile Structural UsesJFS A 2001-1998 Cold Rolled Steel Sheets and Strip for Automobile UseJFST2001-1996 Method of Determining the Plastic Strain Ratio for Metallic Sheets and Strip.244 112525 11 ( ) 12-2525 12 .2012-2543 15 .. 2511(5) 3133(..2546) .. 2511 15 .. 2511 .2140-2546 13 .. 2546 .214025461 1. 1.1 1.2 2. 2.1 10 11 12 (skin pass temper rolling) 2.2 2.3 2.4 2.5 (stretcherstrain orcoil break) 2.6 (mill edge) 2.7 (cut edge) .2140254622.8(plasticstrainratio)(truestrain) 3. 3.1 3 3.1.1 3.1.2 3.1.3 3.2 2 3.2.1 3.2.2 3.3 22 3.3.1 CRA260M* 3.3.2 CRA340 3.3.3 CRA370 3.3.4 CRA390 3.3.5 CRA440 3.3.6 CRA490 3.3.7 CRA540 3.3.8 CRA590 3.3.9 CRA490L 3.3.10 CRA540L 3.3.11 CRA590L 3.3.12 CRA780L 3.3.13 CRA980L 3.3.14 CRA1180L* 3.3.15 CRA270BH* (bake hardening)3.3.16 CRA340BH (bake hardening)3.3.17 CRA440H* 3.3.18 CRA590H* 3.3.19 CRA340D* 3.3.20 CRA370D* .2140254633.3.21 CRA390D* 3.3.22 CRA440D* * 11 4. 4.1 7.85 1 1 4.2 4.2.1 14.2.2 4.2.2.1 (1) 270 2(2) 270 780 3(3) 780 4 54.2.2.2 6 74.2.2.3 ( ) 8 9 8.1.214025464 1 ( 4.2.1) 2 270 ( 4.2.2.1) 0.40 3.20 0.40 3.20 0.40 3.20 600 600 630 1 000 1 250 630 1 000 1 250 1 600 1 600 0.40 0.60 0.05 0.05 0.05 0.06 0.07 0.60 0.80 0.06 0.06 0.06 0.06 0.07 0.80 1.00 0.06 0.06 0.07 0.08 0.09 1.00 1.25 0.07 0.07 0.08 0.09 0.11 1.25 1.60 0.08 0.09 0.10 0.11 0.13 1.60 2.00 0.10 0.11 0.12 0.13 0.15 2.00 2.50 0.12 0.13 0.14 0.15 0.17 2.50 3.20 0.14 0.15 0.16 0.17 0.20.214025465 3 270 780 ( 4.2.2.1) 4 780 ( 4.2.2.1) 630 1 000 1 250 630 1 000 1 250 1 600 1 600 0.40 0.60 0.05 0.05 0.05 0.07 0.08 0.60 0.80 0.06 0.06 0.06 0.07 0.08 0.80 1.00 0.07 0.07 0.08 0.09 0.10 1.00 1.25 0.08 0.08 0.09 0.10 0.12 1.25 1.60 0.09 0.10 0.11 0.12 0.14 1.60 2.00 0.10 0.11 0.12 0.14 0.16 2.00 2.50 0.12 0.13 0.14 0.16 0.18 2.50 3.20 0.14 0.15 0.16 0.18 0.21 1 250 1 250 1 600 1 600 0.60 0.80 0.08 0.09 0.80 1.00 0.09 0.10 1.00 1.25 0.10 0.12 1.25 1.60 0.12 0.14 1.60 2.00 0.14 0.16 2.00 2.30 0.16 0.18 .214025466 5 ( 4.2.2.1) 6 ( 4.2.2.2) 00 630 630 1 000 1 250 1 600 1 000 1 250 1 600 2700.40 0.60 0.035 0.035 0.040 0.045 0.050 0.60 0.80 0.040 0.040 0.045 0.050 0.055 0.80 1.00 0.040 0.040 0.045 0.050 0.055 1.00 1.25 0.050 0.050 0.055 0.060 0.065 1.25 1.60 0.060 0.060 0.065 0.070 0.075 1.60 2.00 0.070 0.070 0.080 0.085 0.090 2.00 2.50 0.075 0.075 0.085 0.090 0.095 2.50 3.20 0.090 0.090 0.100 0.100 0.110 270 0.40 0.60 0.040 0.040 0.040 0.060 0.060 7800.60 0.80 0.050 0.050 0.050 0.060 0.060 0.80 1.00 0.060 0.060 0.060 0.070 0.080 1.00 1.25 0.060 0.060 0.070 0.080 0.100 1.25 1.60 0.070 0.080 0.090 0.100 0.110 1.60 2.00 0.080 0.090 0.100 0.110 0.130 2.00 2.50 0.100 0.100 0.110 0.130 0.140 2.50 3.20 0.110 0.120 0.130 0.140 0.170780 600 0.5600 1 250 + 71 250 + 10.214025467 7 ( 4.2.2.2) 8 ( 4.2.2.3) 9 ( 4.2.2.3) 000000000 600 600 1 250 + 31 250 + 4 2 000 + 102 000 4 000 + 154 000 6 000 + 20 2 000 + 42 000 3 000 + 63 000 4 000 + 84 000 6 000 + 10.2140254685. 5.1 5.1.1 5.1.2 5.2 5.2.1 10 10 11 JIS Z 2241 15.2.2 (bake hardening amount) 10 10 11 JIS G 3135 1 1 ( 5.2.1 5.2.2) FSA- FWHAo= s BH.214025469 s BH FSA 2FWH 2 3AO 2 3 ( 5.2.2 ) ( 5.2.2 )5.2.3 (mean plastic strain ratio)CRA260MCRA270BHCRA340BHCRA340DCRA370DCRA390D CRA440D 12 JFS T 2001 (rm)rmr0+2r45+r90- 4 rm r0 r45 45r90 90=.214025461010 ( 5.2.1 5.2.2) 1. 2. CRA490CRA540CRA590CRA490L CRA540L 0.40 0.60 2.30 3.20 4 5 mm MPa MPa 0.60 1.00 1.00 2.30 MPaCRA340 340 175 34 35 CRA370 370 205 32 33 CRA390 390 235 30 31 CRA440 440 265 26 27 CRA490 490 295 23 24 CRA540 540 325 20 21 CRA590 590 355 17 18 CRA490L 490 225 24 25 CRA540L 540 245 21 22 CRA590L 590 265 18 19 CRA780L 780 365 13 14 CRA980L 980 490 6 7 CRA340BH 340 185 34 35 30. 214025461111 ( 5.2.1 5.2.2) * CRA260M CRA270BH MPa mm mm MPa0.40 0.800.80 1.001.00 3.20 0.40 0.600.60 0.800.80 1.001.00 1.201.20 1.601.60 2.002.00 2.502.50 3.20MpaCRA260M* 260 110 175 100 165 90 155 46 54 47 55 48 56 49 57 50 58 51 60 52 62 - -CRA340 340 205 305 195 295 185 285 33 43 34 44 35 45 36 46 37 47 38 38 38 -CRA370 370 205 305 195 295 185 285 30 40 31 41 32 42 33 43 34 44 35 35 35 -CRA390 390 245 355 235 345 225 335 29 40 30 41 31 42 32 43 33 44 34 34 34 -CRA440 440 285 390 275 380 265 370 26 38 27 39 28 40 29 41 30 42 31 31 31 -CRA590L 1180 325 470 315 460 305 450 - 17 32 18 33 19 34 20 35 21 21 21 -CRA780L 1180 420 645 410 635 400 625 - 12 25 13 26 14 27 15 28 16 16 16 -CRA980L 1180 - 590 930 580 920 - - 9 20 10 21 11 22 12 12 12 -CRA1180L 1180 - 835 1225 825 1215 - - 5 16 6 17 7 18 8 8 8 -CRA270BH* 270 135 225 125 215 115 205 40 50 41 51 42 52 43 53 44 54 45 45 45 30CRA340BH 340 185 285 175 275 165 265 34 44 35 45 36 46 37 47 38 48 39 39 39 30CRA440H 440 355 460 345 450 335 440 23 35 24 36 25 37 26 38 27 39 28 28 28 -CRA590H 590 430 580 420 570 410 560 - 17 32 17 32 18 33 18 33 18 18 18 -CRA340D 340 165 255 155 245 145 235 35 45 36 46 37 47 38 48 39 49 40 40 40 -CRA370D 370 175 265 165 255 155 245 33 43 34 44 35 45 36 46 37 47 38 38 38 -CRA390D 390 205 305 195 295 185 285 31 42 32 43 33 44 34 45 35 36 36 36 36 -CRA440D 440 245 355 235 345 225 335 28 39 29 40 30 41 31 42 32 43 33 33 33 -.2140254612 12 ( 5.2.3)5.2.4 ( 10) 8.2 5.3 (camber) 13 8.313 ( 5.3) 0.50 mm 1.00 mm 1.00 mm 1.60 mmCRA260M 1.8 1.7CRA270BH 1.4 1.3CRA340BH 1.1 1.0CRA340D 1.4 1.3CRA370D 1.4 1.3CRA390D 1.4 1.3CRA440D 1.3 1.2 2 0002 000 30 60 8 8 2 000 60 630 4 4 2 000 780 MPa 30 60 8 8 2 000 60 630 4 4 2 000780 MPa 630 23 630 3 2 0002 2 000.21402546135.4 ( ) 14 8.414 ( 5.4) 5.5 ( ) 15 8.515 ( 5.5) 3 000 1 200 2 1 200 3 3 000 3 1 000 81 000 1 250 9440 MPa1 250 1 600 11 1 600 13 1 000 81 000 1 250 10440 MPa 1 250 1 600 12780 MPa1 600 14 1 000 111 000 1 250 12780 MPa 1 250 1 600 14 1 600 .21402546146. 6.1 (1) (2) (3) (4) (5) x x x x ( )(6) (7) (8) 7. 7.1 .8.8.1 8.1.1 8.1.1.1 0.005 8.1.1.2 (1) 25 30 15 30 3 (2) 25 3 15 3 .21402546158.1.1.3 8.1.2 8.1.2.1 0.5 8.1.2.2 1002 1 000 2 8.1.3 ( )8.1.3.1 1 8.1.3.2 100 2 8.2 4 .244 11 12 180 16 4 ( 8.2).214025461616 ( 8.2) 8.3 0.5 (a) 2 000 5 2 000 6 5 2 000 ( 8.3) CRA340 CRA370 CRA390 CRA440 CRA490 CRA540 CRA590 2 CRA490L CRA540L CRA590L 2 CRA780L 6 CRA980L 8 CRA340BH .2140254617 6 2 000 ( 8.3)8.4 0.5 (A) 7 7 ( 8.4)8.5 0.5 0.5 8.2140254618 8 ( 8.5).2140254619. ( 7.1).1 .2 .2.1 .2.1.1 .1.2.1.2 4.2 5.1 5.3 .1 .1 ( .2.1) 2500.2.2 .2.2.1 .2.2.2.2 4.2 5.1 5.3 5.4 5.5 .2 10 2 0 10 8 1.2140254620.2 ( .2.2).2.3 .2.3.1 3 .2.3.2 5.2.1 5.2.2 5.2.3 5.2.4 .3 .2.1.2.2.2.2.2.3.2 500 2 0 500 8 1