Yamato Steel Co., Ltd. - H-Beams

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H-Beams

Rolled steel with an H-shaped cross-section. Equal thickness in the two parallel flanges with no taper on the inside surface. Classified into narrow, medium, and wide, based on the height and flange width.

  • Wide Flange Series
  • Medium Flange Series
  • Narrow Flange Series

Shape/Dimensions

Wide Flange Series

Classification(Height × Flange width) Standard cross-section dimensions (mm) Cross-sectional area(cm3） Unit mass(kg/m)
H×B t1 t2 r
100×100 *100×100

6

8

8

 21.59 16.9
125×125 125×125

6.5

9

8

 30.00 23.6
150×150 150×150

7

10

8

 39.65 31.1
175×175 175×175

7.5

11

13

 51.43 40.4
200×200 200×200 *200×204

812

1212

1313

 63.5371.53 49.956.2
250×250 *244×252250×250*250×255

11914

111414

131313

 81.3191.43103.9 63.871.881.6
300×300 *294×302300×300*300×305

121015

121515

131313

 106.3118.5133.4 83.493.0105.0
350×350 *344×348*344×354350×350

101612

161619

131313

 144.0164.6171.9 113.0129.0135.0
400×400 400×400

13

21

22

 218.7 172.0
Classification(Height × Flange width) Reference
Second moment of area(cm4) Radius of gyration of area(cm) Section modulus(cm3)
lx ly ix iy zx zy
100×100 378 134 4.18 2.49 75.6 26.7
125×125 839 293 5.29 3.13 134.0 46.9
150×150 1,620 563 6.40 3.77 216.0 75.1
175×175 2,900 984 7.50 4.37 331.0 112.0
200×200 4,7204,980 1,6001,700 8.628.35 5.024.88 472.0498.0 160.0167.0
250×250 8,70010,70011,400 2,9403,6503,880 10.3010.8010.50 6.016.326.11 713.0860.0912.0 233.0292.0304.0
300×300 16,60020,20021,300 5,5106,7507,100 12.5013.1012.60 7.207.557.30 1,130.01,350.01,420.0 365.0450.0466.0
350×350 32,80034,90039,800 11,20011,80013,600 15.1014.6015.20 8.848.488.89 1,910.02,030.02,280.0 646.0669.0776.0
400×400 66,600 22,400 17.50 10.10 3,330.0 1,120.0

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Medium Flange Series

Classification(Height × Flange width) Standard cross-section dimensions（mm） Cross-sectional area(cm3） Unit mass(kg/m)
H×B t1 t2 r
200×150 194×150

6

9

8

 38.11 29.9
250×175 244×175

7

11

13

 55.49 43.6
300×200 294×200

8

12

13

 71.05 55.8
350×250 340×250

9

14

13

 99.53 78.1
400×300 390×300

10

16

13

 133.30 105
450×300 440×300

11

18

13

 153.90 121
500×300 482×300488×300

1111

1518

1313

 141.2159.2 111125
600×300 582×300588×300594×302

121214

172023

131313

 169.20187.20217.10 133147170
700×300 692×300700×300

1313

2024

1818

 207.50231.50 163182
800×300 792×300800×300

1414

2226

1818

 239.50263.50 188207
900×300 *890×299900×300*912×302

151618

232834

181818

 266.90305.80360.10 210240283
Classification(Height × Flange width) Reference
Second moment of area(cm4) Radius of gyration of area(cm) Section modulus(cm3)
lx ly ix iy zx zy
200×150 2,630 507 8.30 3.65 271 67.6
250×175 6,040 984 10.40 4.21 495 112
300×200 11,100 1,600 12.50 4.75 756 160
350×250 21,200 3,650 14.60 6.05 1,250 292
400×300 37,900 7,200 16.90 7.35 1,940 480
450×300 54,700 8,110 18.90 7.26 2,490 540
500×300 58,30068,900 6,7608,110 20.3020.80 6.927.14 2,4202,820 450540
600×300 98,900114,000134,000 7,6609,01010,600 24.2024.7024.80 6.736.946.98 3,4003,8904,500 511601700
700×300 168,000197,000 9,02010,800 28.5029.20 6.596.83 4,8705,640 601721
800×300 248,000286,000 9,92011,700 32.2033.00 6.446.67 6,2707,160 661781
900×300 339,000404,000491,000 10,30012,60015,700 35.6036.4036.90 6.206.436.59 7,6108,99010,800 6878421.040

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Narrow Flange Series

Classification(Height × Flange width) Standard cross-section dimensions（mm） Cross-sectional area(cm3） Unit mass(kg/m)
H×B t1 t2 r
200×100 *198×99200×100

4.55.5

78

88

 22.6926.67 17.820.9
250×125 248×124250×125

56

89

88

 31.9936.97 25.129.0
300×150 298×149300×150

5.56.5

89

1313

 40.8046.78 32.0 36.7
350×175 346×174350×175

67

911

1313

 52.4562.91 41.249.4
400×200 396×199400×200

78

1113

1313

 71.4183.37 56.165.4
450×200 446×199450×200

89

1214

1313

 82.9795.43 65.174.9
500×200 496×199 500×200*506×201

91011

141619

131313

 99.29112.30129.30 77.988.2102.0
600×200 596×199600×200*606×201

101112

151720

131313

 117.80131.70149.80 92.5103.0118.0
Classification(Height × Flange width) Reference
Second moment of area(cm4) Radius of gyration of area(cm) Section modulus(cm3)
lx ly ix iy zx zy
200×100 1,5401,810 113134 8.258.23 2.242.24 156181 22.926.7
250×125 3,4503,960 255294 10.4010.40 2.822.82 278317 41.147.0
300×150 6,3207,210 442508 12.4012.40 3.293.29 424481 59.367.7
350×175 11,00013,500 791984 14.5014.60 3.883.96 638771 91.0112.0
400×200 19,80023,500 1,4501,740 16.6016.80 4.504.56 9991.170 145.0174.0
450×200 28,10032,900 1,5801,870 18.4018.60 4.364.43 1,2601,460 159.0187.0
500×200 40,80046,80055,500 1,8402,1402,580 20.3020.4020.70 4.314.364.46 1,6501,8702,190 185.0214.0256.0
600×200 66,60075,60088,300 1,9802,2702,720 23.8024.0024.30 4.104.164.26 2,2402,5202,910 199.0227.0270.0

1. When ordering, please specify actual dimensions(H×B×t1/t2×length). 2. The sizes marked * are not constantly being rolled, so please inquire when ordering. 3. Please talk to us in advance about turnaround times and specifications (bending, shot blasting, etc.). 4. Standard length is 6 m or more with 500 mm pitch up to 24 m, but for orders over 15 m, 　 please talk to us before ordering.

For inquiries on sales of our Steel Products, call or email:

Head Office: Iron & Steel Sales Section, Sales Division

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