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¤º®|ºë«×: H7¡BH8¡BH9
¤º®|²Ê«×: Ra 0.2£gm~ Ra 0.8£gm
¼Ð·Çªø«×: 3M~11M
¯S®íªø«×: 12M
¤º®|¤Ø¤o: 18mm~300mm
§÷½è : JIS STKM13C¡BDIN ST52¡BSAE1020©Î¾÷±ñºc³y¥ÎºÒ¯À¿ûºÞ¡A
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¤º®|x¥~®|rr.mO ¾A¥ÎÀ£¤OKg/cm2 ¤º®|x¥~®|rr.mO ¾A¥ÎÀ£¤OKg/cm2 ¤º®|x¥~®|rr.mO ¾A¥ÎÀ£¤OKg/cm2 ¤º®|x¥~®|rr.mO ¾A¥ÎÀ£¤OKg/cm2
18x31 751 63x73 165 100x116 166 150x168 125
18x35 980 63x76 215 100x120 208 150x170 140
20x30 520 63x80 280 100x125 260 150x175 173
20x40 1040 65x75 160 100x130 312 150x180 210
25x35 416 65x80 240     152.4x171.5 130
30x36 208 65x85 320 101.6x117.48 160 152.4x177.8 170
30x40 346 70x80 148 105x120 150 160x172 78
30x45 550 70x82 178 105x125 200 160x178 117
30x42 325 70x85 238 107.95x125 170    
    70x90 297 110x120 95 160x180 135
35x45 297     110x125 142 160x185 162
38x50 330 75x85 138 110x130 189 160x190 195
38.1x50.8 335 75x90 208 110x135 240 165x190 160
40x44 104 75x95 270 114.3x133.35 180 165.1x190.5 160
40x46 156 76.2x88.9 170     170x190 125
40x48 208 76.2x92.07 220 115x130 140 170x195 150
40x50 260 80x87 90 115x135 185 170x205 220
40x55 390 80x89 117 120x132 104 175x190 95
40x60 520 80x90 130 120x135 130 175x195 120
    80x95 195 120x140 173 177.8x203.2 150
45x55 231 80x100 260 125x135 75 177.8x215.9 220
45x60 346 82.55x92.07 130 125x137 100 180x196 92
50x55 104 82.55x95 160 125x140 125 180x205 150
50x57 145     125x145 166 180x210 175
50x58 166 82.55x98.4 200 125x152 224 180x216 208
50x60 208 85x95 122     180x225 260
50x65 312 85x100 190 127x146 155 200x216 83
50x70 416 88.9x101.6 150 130x142 96 200x220 100
50.8x63.5 260 88.9x105 190 130x150 160 200x232 166
55x65 189 90x100 115 130x153 190 200x242 210
    90x105 173 130x155 200 203.2x228.5 130
55x70 283 90x110 231 135x160 200 203.2x241.3 195
57x70 240 95x110 165 140x153 96 220x260 190
60x70 173 95x115 220 140x155 115 225x254 135
60x72 208     140x160 148 250x267 71
60x75 260 98.4x111.13 140 140x165 185 250x290 170
60x80 346 100x107 73 140x170 225    
63.5x76.2 210 100x109 94 145x170 180 250x298 200
63x69 99 100x110 104 145x175 220 300x318 62
63x71 132 100x114 146 150x160 70 300x355 195
    100x115 156 150x163 90    
 
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C Si Mn P S
  13ºØ A STKM 13A SE 0.25 ¡Ö 0.35 ¡Ö 0.30-0.90 0.040¥H¤U 0.040¥H¤U
B STKM 13B
C STKM 13C
 
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t = P. D./200 S
t = ¦×«p (mm2)
P = ³Ì°ªÀ£¤O (Kg/)
D = ¿ûºÞ¤º®| (mm2)
S = £m / 5 Kg /
£m = ¤Þ±i±j«×³Ì§C­È (Kg/)