所有钢种屈服点

N/mm²

圆弧半径r,mm

t≤4.0

4.0<t≤8.0

≤235

≤1.4t

≤1.8t

≤275

≤1.8t

≤2.4t

≤350

≤2.4t

≤3.0t

>350

双方协议

名称

尺寸mm

理论重量

kg/m

截面面积

重心

cm

惯性矩，cm⁴

回转半径，cm

截面模数，cm³

b×b×t

b

t

cm²

Y₀

I_x=

I_y

I_u

I_v

r_x=r_y

r_u

r_v

W_xmax=

W_ymax

W_ymin=

W_xmin

20×20×1.2

20×20×1.6

20×20×2.0

20

1.2

1.6

2.0

0.354

0.463

0.566

0.451

0.589

0.721

0.559

0.579

0.599

0.179

0.230

0.278

0.292

0.377

0.457

0.066

0.084

0.099

0.063

0.625

0.621

0.804

0.800

0.796

0.385

0.377

0.371

0.321

0.398

0.464

0.125

0.162

0.198

25×25×1.6

25×25×2.0

25×25×2.5

25×25×3.0

25

1.6

2.0

2.5

3.0

0.588

0.723

0.885

1.039

0.749

0.921

1.127

1.323

0.704

0.724

0.749

0.774

0.464

0.563

0.679

0.786

0.756

0.922

1.117

1.298

0.172

0.205

0.242

0.275

0.786

0.782

0.776

0.770

1.004

1.000

0.995

0.990

0.479

0.472

0.463

0.456

0.659

0.778

0.907

1.106

0.258

0.317

0.388

0.455

30×30×1.6

30×30×2.0

30×30×2.5

30×30×3.0

30

1.6

2.0

2.5

3.0

0.714

0.880

1.081

1.274

0.909

1.121

1.377

1.623

0.829

0.849

0.874

0.898

0.817

0.998

1.210

1.409

1.328

1.626

1.981

2.316

0.307

0.369

0.439

0.503

0.948

0.943

0.937

0.931

1.208

1.204

1.199

1.194

0.581

0.573

0.565

0.556

0.986

1.175

1.385

1.568

0.376

0.464

0.569

0.671

40×40×1.6

40×40×2.0

40×40×2.5

40×40×3.0

40×40×4.0

40

1.6

2.0

2.5

3.0

4.0

0.965

1.194

1.473

1.745

2.266

1.229

1.521

1.877

2.223

2.886

1.079

1.099

1.123

1.148

1.198

1.985

2.438

2.979

3.496

4.455

3.213

3.956

4.851

5.710

7.320

0.758

0.919

1.108

1.282

1.590

1.270

1.265

1.259

1.253

1.242

1.616

1.612

1.607

1.602

1.592

0.785

0.777

0.768

0.759

0.742

1.839

2.218

2.651

3.043

3.717

0.679

0.840

1.036

1.226

1.590

50×50×2.0

50×50×2.5

50×50×3.0

50×50×4.0

50

2.0

2.5

3.0

4.0

1.508

1.866

2.216

2.894

1.921

2.377

2.823

3.686

1.349

1.373

1.398

1.448

4.848

5.952

7.015

9.022

7.845

9.658

11.414

14.755

1.850

2.245

2.616

3.290

1.588

1.582

1.576

1.564

2.020

2.015

2.010

2.000

0.981

0.971

0.962

0.944

3.593

4.332

5.015

6.229

1.327

1.641

1.948

2.540

60×60×2.0

60×60×2.5

60×60×3.0

60×60×4.0

60

2.0

2.5

3.0

4.0

1.822

2.258

2.687

3.522

2.321

2.877

3.423

4.486

1.599

1.623

1.648

1.698

8.478

10.440

12.342

15.970

13.694

16.903

20.028

26.030

3.262

3.978

4.657

5.911

1.910

1.904

1.898

1.886

2.428

2.423

2.418

2.408

1.185

1.175

1.166

1.147

5.302

6.429

7.486

9.403

1.926

2.385

2.836

3.712

70×70×3.0

70×70×4.0

70×70×5.0

70

3.0

4.0

5.0

3.158

4.150

5.110

4.023

5.286

6.510

1.898

1.948

1.997

19.853

25.799

31.430

32.152

41.944

51.286

7.553

9.654

11.571

2.221

2.209

2.197

2.826

2.816

2.806

1.370

1.351

1.333

10.456

13.242

15.731

3.891

5.107

6.283

80×80×3.0

80×80×4.0

80×80×5.0

80×80×6.0

80

3.0

4.0

5.0

6.0

3.629

4.778

5.895

6.982

4.623

6.086

7.510

8.895

2.148

2.198

2.247

2.297

29.921

39.009

47.677

55.938

48.386

63.299

77.622

91.365

11.456

14.719

17.731

20.512

2.543

2.531

2.519

2.507

3.234

3.224

3.214

3.204

1.574

1.555

1.536

1.518

13.925

17.745

21.209

24.346

5.113

6.723

8.288

9.809

100×100×3.0

100×100×4.0

100×100×5.0

100×100×6.0

100

3.0

4.0

5.0

6.0

4.571

6.034

7.465

8.866

5.823

7.686

9.510

11.265

2.648

2.698

2.747

2.797

59.231

77.571

95.237

112.247

95.584

125.528

154.539

182.629

22.878

29.613

35.3

41.866

3.189

3.176

3.164

3.152

4.051

4.041

4.031

4.021

1.982

1.962

1.943

1.925

22.363

28.749

34.659

40.125

8.057

10.623

13.132

15.584