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汽车用冷弯型钢(摘自GB/T 6726-2008)

方形冷弯空心型钢

方形空心型钢的基本尺寸与主要参数(GB/T 6726—2008)

弯曲角部分的外圆弧半径

屈服强度

等级

外圆弧半径/mm

t≤2.0

2.0＜t≤4.0

4.0＜t≤8.0

235

(1.5~3.0)t

(2.0~3.5)t

345

(2.0~3.5)t

(2.5~4.0)t

390

供需双方协议

 

代号：F

B—— 边长；

t—— 壁厚

边长

B/mm

尺寸允许偏差

Δ/mm

壁厚

t/mm

理论

质量

M/(kg/m)

截面

面积

A/cm2

惯性矩

Ix＝Iy/

cm4

惯性半径

rx＝ry/

cm

截面系数

ωx＝ωy/

cm3

扭转常数

It/cm4

Ct/cm3

20

±0.50

1.5

0.826

1.052

0.583

0.744

0.583

0.985

0.88

1.75

0.941

1.199

0.642

0.732

0.642

1.106

0.98

2.0

1.050

1.340

0.692

0.720

0.692

1.215

1.06

25

±0.50

1.5

1.061

1.352

1.216

0.948

0.973

1.998

1.47

1.75

1.215

1.548

1.357

0.936

1.086

2.261

1.65

2.0

1.363

1.736

1.482

0.923

1.186

2.502

1.80

30

±0.50

1.5

1.296

1.652

2.195

1.152

1.463

3.555

2.21

1.75

1.490

1.898

2.470

1.140

1.646

4.048

2.49

2.0

1.677

2.136

2.721

1.128

1.814

4.511

2.75

2.5

2.032

2.589

3.154

1.103

2.102

5.347

3.20

3.0

2.361

3.008

3.500

1.078

2.333

6.060

3.58

40

±0.50

1.5

1.767

2.252

5.489

1.561

2.744

8.728

4.13

1.75

2.039

2.598

6.237

1.549

3.118

10.009

4.69

2.0

2.305

2.936

6.939

1.537

3.469

11.238

5.23

2.5

2.817

3.589

8.213

1.512

4.106

13.539

6.21

3.0

3.303

4.208

9.320

1.488

4.660

15.628

7.07

4.0

4.198

5.347

11.064

1.438

5.532

19.152

8.48

50

±0.50

1.5

2.238

2.852

11.065

1.969

4.426

17.395

6.65

1.75

2.589

3.298

12.641

1.957

5.056

20.025

7.60

2.0

2.933

3.736

14.146

1.945

5.658

22.578

8.51

2.5

3.602

4.589

16.941

1.921

6.776

27.436

10.22

3.0

4.245

5.408

19.463

1.897

7.785

31.972

11.77

4.0

5.454

6.947

23.725

1.847

9.490

40.047

14.43

60

±0.60

2.0

3.560

4.540

25.120

2.350

8.380

39.810

12.60

2.5

4.387

5.589

30.340

2.329

10.113

48.539

15.22

3.0

5.187

6.608

35.130

2.305

11.710

56.892

17.65

4.0

6.710

8.547

43.539

2.256

14.513

72.188

21.97

5.0

8.129

10.356

50.468

2.207

16.822

85.560

25.61

70

±0.65

2.5

5.170

6.590

49.400

2.740

14.100

78.500

21.20

3.0

6.129

7.808

57.522

2.714

16.434

92.188

24.74

4.0

7.966

10.147

72.108

2.665

20.602

117.975

31.11

5.0

9.699

12.356

84.602

2.616

24.172

141.183

36.65

80

±0.70

3.0

7.071

9.008

87.838

3.122

21.959

139.660

33.02

4.0

9.222

11.747

111.031

3.074

27.757

179.808

41.84

5.0

11.269

14.356

131.414

3.025

32.853

216.628

49.68

90

±0.75

3.0

8.013

10.208

127.277

3.531

28.283

201.108

42.51

4.0

10.478

13.347

161.907

3.482

35.979

260.088

54.17

5.0

12.839

16.356

192.903

3.434

42.867

314.896

64.71

6.0

15.097

19.232

220.420

3.385

48.982

365.452

74.16

100

±0.80

4.0

11.734

11.947

226.337

3.891

45.267

361.213

68.10

5.0

14.409

18.356

271.071

3.842

54.214

438.986

81.72

6.0

16.981

21.632

311.415

3.794

62.283

511.558

94.12

120

±0.90

4.0

14.246

18.147

402.260

4.708

67.043

635.603

100.75

5.0

17.549

22.356

485.441

4.659

80.906

776.632

121.75

6.0

20.749

26.432

562.094

4.611

93.683

910.281

141.22

矩形冷弯空心型钢

矩形空心型钢的基本尺寸与主要参数(GB/T 6726—2008)

弯曲角部分的外圆弧半径

屈服强度

等级

外圆弧半径/mm

t≤2.0

2.0＜t≤4.0

4.0＜t≤8.0

235

(1.5~3.0)t

(2.0~3.5)t

345

(2.0~3.5)t

(2.5~4.0)t

390

供需双方协议

 

 

代号：J

H—— 长边；

B—— 短边；

t—— 壁厚

 

边长

尺寸允

许偏差

Δ/mm

壁厚

t/mm

理论

重量

M/(kg/m)

截面

面积

A/cm2

惯性矩

惯性半径

截面系数

扭转常数

H/

mm

B/

mm

Ix/

cm4

Iy/

cm4

rx/

cm

ry/

cm

ωx/

cm3

ωy/

cm3

It/

cm4

Ct/

cm3

40

30

±0.50

1.5

1.53

1.95

4.38

2.81

1.50

1.199

2.19

1.87

5.52

3.02

1.75

1.77

2.25

4.96

3.17

1.48

1.187

2.48

2.11

6.31

3.42

2.0

1.99

2.54

5.49

3.5l

1.47

1.176

2.75

2.34

7.07

3.79

50

30

±0.50

1.5

1.767

2.252

7.535

3.415

1.829

1.231

3.014

2.276

7.587

3.83

1.75

2.039

2.598

8.566

3.868

1.815

1.220

3.426

2.579

8.682

4.35

2.0

2.305

2.936

9.535

4.291

1.801

1.208

3.814

2.861

9.727

4.84

2.5

2.817

3.589

11.296

5.050

1.774

1.186

4.518

3.366

11.666

5.72

3.0

3.303

4.206

12.827

5.696

1.745

1.163

5.130

3.797

13.401

6.49

4.0

4.198

5.347

15.239

6.682

1.688

1.117

6.095

4.455

16.244

7.77

50

40

±0.50

1.5

2.003

2.552

9.300

6.602

1.908

1.608

3.720

3.301

12.238

5.24

1.75

2.314

2.948

10.603

7.518

1.896

1.596

4.241

3.759

14.059

5.97

2.0

2.619

3.336

11.840

8.348

1.883

1.585

4.736

4.192

15.817

6.673

2.5

3.210

4.089

14.121

9.976

1.858

1.562

5.648

4.988

19.222

7.965

3.0

3.775

4.808

16.149

11.382

1.833

1.539

6.460

5.691

22.336

9.123

4.0

4.826

6.148

19.493

13.677

1.781

1.492

7.797

6.839

27.820

11.06

55

25

±0.50

1.5

1.767

2.252

8.453

2.460

1.937

1.045

3.074

1.968

6.273

3.458

1.75

2.039

2.598

9.606

2.779

1.922

1.034

3.493

2.223

7.156

3.916

2.0

2.305

2.936

10.689

3.073

1.907

1.023

3.886

2.459

7.992

4.342

55

40

±0.50

1.5

2.121

2.702

11.674

7.158

2.078

1.627

4.245

3.579

14.017

5.794

1.75

2.452

3.123

13.329

8.158

2.065

1.616

4.847

4.079

16.175

6.614

2.0

2.776

3.536

14.904

9.107

2.052

1.604

5.419

4.553

18.208

7.394

55

50

±0.60

1.75

2.726

3.473

15.811

13.660

2.133

1.983

5.749

5.464

23.173

8.415

2.0

3.090

3.936

17.714

15.298

2.121

1.971

6.441

6.119

26.142

9.433

60

30

±0.60

2.0

2.620

3.337

15.046

5.078

2.123

1.234

5.015

3.385

12.570

5.881

2.5

3.209

4.089

17.933

5.998

2.094

1.211

5.977

3.998

15.054

6.981

3.0

3.774

4.808

20.496

6.794

2.064

1.188

6.832

4.529

17.335

7.950

4.0

4.826

6.147

24.691

8.045

2.004

1.143

8.230

5.363

21.141

9.523

60

40

±0.60

2.0

2.934

3.737

18.412

9.831

2.220

1.622

6.137

4.915

20.702

8.116

2.5

3.602

4.589

22.069

11.734

2.192

1.595

7.356

5.867

25.045

9.722

3.0

4.245

5.408

25.374

13.436

2.166

1.576

8.458

6.718

29.121

11.175

4.0

5.451

6.947

30.974

16.269

2.111

1.530

10.324

8.134

36.298

13.653

70

50

±0.60

2.0

3.562

4.537

31.475

18.758

2.634

2.033

8.993

7.503

37.454

12.196

3.0

5.187

6.608

44.046

26.099

2.581

1.987

12.584

10.439

53.426

17.06

4.0

6.710

8.547

54.663

32.210

2.528

1.941

15.618

12.884

67.613

21.189

5.0

8.129

10.356

63.435

37.179

2.474

1.894

18.121

14.871

79.908

24.642

80

40

±0.70

2.0

3.561

4.536

37.355

12.720

2.869

1.674

9.339

6.361

30.881

11.004

2.5

4.387

5.589

45.103

15.255

2.840

1.652

11.275

7.627

37.467

13.283

3.0

5.187

6.608

52.246

17.552

2.811

1.629

13.061

8.776

43.680

15.283

4.0

6.710

8.547

64.780

21.474

2.752

1.585

16.195

10.737

54.787

18.844

5.0

8.129

10.356

75.080

24.567

2.692

1.540

18.770

12.283

64.110

21.744

80

60

±0.70

3.0

6.129

7.808

70.042

44.886

2.995

2.397

17.510

14.962

88.111

24.143

4.0

7.966

10.147

87.945

56.105

2.943

2.351

21.976

18.701

112.583

30.332

5.0

9.699

12.356

103.247

65.634

2.890

2.304

25.811

21.878

134.503

35.673

90

40

±0.75

3.0

5.658

7.208

70.487

19.610

3.127

1.649

15.663

9.805

51.193

17.339

4.0

7.338

9.347

87.894

24.077

3.066

1.604

19.532

12.038

64.320

21.441

5.0

8.914

11.356

102.487

27.651

3.004

1.560

22.774

13.825

75.426

24.819

90

50

±0.75

2.0

4.190

5.337

57.878

23.368

3.293

2.093

12.862

9.347

53.366

15.882

2.5

5.172

6.589

70.263

28.236

3.266

2.070

15.614

11.294

65.299

19.235

3.0

6.129

7.808

81.845

32.735

3.237

2.047

18.187

13.094

76.433

22.316

4.0

7.966

10.147

102.696

40.695

3.181

2.002

22.821

16.278

97.162

27.961

5.0

9.699

12.356

120.570

47.345

3.123

1.957

26.793

18.938

115.436

36.774

90

55

±0.75

2.0

4.346

5.536

61.75

28.957

3.340

2.287

13.733

10.53

62.724

17.601

2.5

5.368

6.839

75.049

33.065

3.313

2.264

16.678

12.751

76.877

21.357

90

60

±0.75

3.0

6.600

8.408

93.203

49.764

3.329

2.432

20.711

16.588

104.552

27.391

4.0

8.594

10.947

117.499

62.387

3.276

2.387

26.111

20.795

133.852

34.501

5.0

10.484

13.356

138.653

73.218

3.222

2.311

30.811

24.406

160.273

40.712

100

50

±0.80

3.0

6.690

8.408

106.451

36.053

3.558

2.070

21.290

14.421

88.311

25.012

4.0

8.594

10.947

134.124

44.938

3.500

2.026

26.824

17.975

112.409

31.35

5.0

10.484

13.356

158.155

52.429

3.441

1.981

31.631

20.971

133.758

36.804

120

50

±0.90

2.5

6.350

8.089

143.97

36.704

4.219

2.130

23.995

14.682

96.026

26.006

3.0

7.543

9.608

168.58

42.693

4.189

2.108

28.097

17.077

112.870

30.317

120

60

±0.90

3.0

8.013

10.208

189.113

64.398

4.304

2.511

31.581

24.666

156.029

37.138

4.0

10.478

13.347

240.724

81.235

4.246

2.466

40.120

27.078

200.407

47.048

5.0

12.839

16.356

286.941

95.968

4.188

2.422

47.823

31.989

240.869

55.846

6.0

15.097

19.232

327.950

108.716

4.129

2.377

54.658

36.238

277.361

63.597

120

80

±0.90

3.0

8.955

11.408

230.189

123.430

4.491

3.289

38.364

30.857

255.128

50.799

4.0

11.734

14.947

294.569

157.281

4.439

3.243

49.094

39.320

330.438

64.927

5.0

14.409

18.356

353.108

187.747

4.385

3.198

58.850

46.936

400.735

77.772

6.0

16.981

21.632

105.998

214.977

4.332

3.152

67.666

53.744

165.940

83.399

140

80

±1.00

4.0

12.990

16.547

429.582

180.407

5.095

3.301

61.368

45.101

410.713

76.478

5.0

15.979

20.356

517.023

215.914

5.039

3.256

73.860

53.978

498.815

91.834

6.0

18.865

24.032

569.935

247.905

4.983

3.211

85.276

61.976

580.919

105.83

150

100

±1.20

4.0

14.874

18.947

594.585

318.551

5.601

4.110

79.278

63.710

660.613

104.94

5.0

18.334

23.356

719.164

383.988

5.549

4.054

95.888

79.797

806.733

126.81

6.0

21.691

27.632

834.615

444.135

5.495

4.009

111.282

88.827

915.022

147.07

160

80

±1.20

4.0

14.216

18.117

597.691

203.532

5.738

3.348

71.711

50.883

493.129

88.031

5.0

17.519

22.356

721.650

214.089

5.681

3.304

90.206

61.020

599.175

105.90

6.0

20.749

26.433

835.936

286.832

5.623

3.259

104.192

76.208

698.881

122.27

180

65

±1.20

3.0

11.075

14.108

550.350

111.780

6.246

2.815

61.150

34.393

306.750

61.849

4.5

16.264

20.719

784.130

156.470

6.152

2.748

87.125

48.144

438.910

86.993

异形P形空心型钢

异形P形空心型钢的基本尺寸与主要参数(GB/T 6726—2008)

代号：YIP

L、H——P形管宽度、高度；

l、h——缺口宽度、高度；

t——壁厚

弯曲角部分的外圆弧半径

屈服强度

等级

外圆弧半径/mm

t≤2.0

2.0＜t≤4.0

4.0＜t≤8.0

235

(1.5~3.0)t

(2.0~3.5)t

345

(2.0~3.5)t

(2.5~4.0)t

390

供需双方协议

截面尺寸

边长/mm

壁厚/mm

理论重量/

(kg/m)

截面面积/

cm2

L×H×l×h

L

H

l

h

t

50×50×25×10

50

50

25

10

1.5

2.238

2.852

2.0

2.933

3.736

60×40×30×20

60

40

30

20

1.5

2.238

2.852

2.0

2.933

3.736

65×50×25×20

65

50

25

20

1.5

2.592

3.302

2.0

3.404

4.337

75×50×25×20

75

50

25

20

1.5

2.827

3.602

2.0

3.718

4.737

120×50×40×25

120

50

40

25

2.5

6.349

8.809

3.5

8.709

11.094

等边槽钢

等边槽钢的基本尺寸与主要参数(GB/T 6726—2008)

代号：CD

H——高度；

B——腿长；

t——壁厚；

R——外圆弧半径

截面尺寸/mm

边长/mm

壁厚/mm

理论重量/

(kg/m)

截面面积/

cm2

H×B

H

B

t

100×50

100

50

3.0

4.433

5.647

4.0

5.788

7.373

140×60

140

60

3.0

5.846

7.447

4.0

7.672

9.773

5.0

9.436

12.021

200×80

200

80

4.0

10.812

13.773

5.0

13.361

17.021

6.0

15.849

20.190

250×130

250

130

6.0

22.703

29.107

8.0

29.755

38.147

300×150

300

150

6.0

26.915

34.507

8.0

35.371

45.347

边框架

边框架的基本尺寸与主要参数(GB/T 6726—2008)

代号：BK

壁厚/mm

理论重量/(kg/m)

截面面积/cm2

2

3.965

5.04

2.5

4.956

6.30

3

5.948

7.56

上边框

上边框的基本尺寸与主要参数(GB/T 6726—2008)

代号：SB

H——高度；

h——小高度；

B——宽度；

C——筋宽；

t——壁厚；

R——外圆弧半径

截面尺寸/mm

边长/mm

壁厚/mm

理论重量/

(kg/m)

截面面积/

cm2

H×B×h×C

H

B

h

C

t

65×40×40×12

65

40

40

12

2.5

2.75

3.526

65

40

40

12

3.0

3.30

4.227

65×50×30×12

65

50

30

12

2.5

2.75

3.526

65

50

30

12

3.0

3.30

4.227

65×50×40×12

65

50

40

12

2.5

2.86

3.667

65

50

40

12

3.0

3.56

4.566

65×50×40×22

65

50

40

22

2.5

3.06

3.923

下边框

下边框的基本尺寸与主要参数(GB/T 6726—2008)

代号：XB

H——高度；

h——小高度；

B——宽度；

C——筋宽；

t——壁厚；

R——外圆弧半径

截面尺寸/mm

边长/mm

壁厚/mm

理论重量/

(kg/m)

截面面积/

cm2

H×B×h×C

H

B

h

C

t

65×28.5×30×10

65

28.5

30

10

2.5

2.01

2.557

65×36×30×15

65

36.0

30

15

2.5

2.37

3.039

75×38.5×40×15

75

38.5

40

15

3.0

3.22

4.128

95×50×50×20

95

50.0

50

20

3.0

4.45

5.705

上框架

上框架的基本尺寸与主要参数(GB/T 6726—2008)

代号：SK

理论重量/(kg/m)

截面面积/cm2

2.99

3.81

下内框架

下内框架的基本尺寸与主要参数(GB/T 6726—2008)

代号：XNK

理论重量/(kg/m)

截面面积/cm2

1.648

2.10

下外框架

下外框架的基本尺寸与主要参数(GB/T 6726—2008)

代号：XWK

理论重量/(kg/m)

截面面积/cm2

2.099

2.68
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