Gb6654-1996 Steel Plate for Pv

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中华人民共和国国家标准 National Standard of the People’s Republic of China GB 6654-1996 Supersedes GB 6654 – 86 GB 6655– 86

压力容器用钢板 Steel plates for pressure vessels

Approved by the State Bureau of Technical Supervision on 1996-04-05

Implemented from 1996 – 10 – 01

GB 6654 1996

Foreword This standard is a bound volume of revisions of GB 6654 – 86 and GB 6655 – 86. The new revised standard, compared with the original one, has following changes: Sulfur content in steel is reduced. The sulfur content in different steels is reduced from 0.035% to 0.030%. The size of thickness of steel plate is increased. Maximum thickness is increased from 100mm to 120mm. Two brand numbers of steel, 13MnNiMoNbR and 15CrMoR, are added. Impact power at ambient temperature for three brand numbers of steel, 20R, 16MnR and 15MnVR, are increased. The transverse impact power is increased from 27J to 31J. The range of high limit and low limit of tensile strength is reduced while the criteria for elongation, δ5 , is increased. This standard shall be implemented from October 1, 1996. The original GB 6654 – 86 and GB 6655 – 86 shall become invalid from the date of implementation. Appendix A and Appendix B are appendices of this Standard. This Standard is put forth by the Ministry of Metallurgical Industry of the People’s Republic of China. This Standard is under the jurisdiction of the National Technical Committee for Standardization of Steel for management. This Standard is prepared by Shanghai No.3 Steel Plant and Chonhqing Steel Company (Group).

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Key person for preparation of this Standard is Fang Aiti.

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中华人民共和国国家标准 National Standard of the People’s Republic of China GB 6654 – 1996

压力容器用钢板 Steel Plates for Pressure Vessels

Supersedes GB 6654 – 86 GB 6655 - 86

——————————————————————————————————————————

1. Scope This Standard specifies size, profile, technical requirements, test method, inspection rules, packing, marks and quality certificate of steel plates for pressure vessels. This Standard applies to steel plates with thickness of 6 ~ 120mm used for pressure elements of pressure vessels at medium and ambient temperature. 2. Cited Standards For cited standards, see Appendix A. 3. Method to Express Brand Number The “R” after the brand number listed in this Standard is the first character in Chinese spelling of the word “vessel” of “pressure vessels” 4. Size, Profile, Weight and Allowable Deviation 4.1 The size, profile and allowable deviation for steel plates shall meet what specified in GB 709. 4.2 The thickness deviation of the steel plates shall meet what specified in Table 1. 4.3 The steel plates shall be delivered according to theoretical weight. The added value listed in Table 2 of nominal thickness shall be used as theoretical thickness to calculate the weight.

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Table 1 Allowable Deviation for Thickness

Nominal thickness

Minus deviation

mm Width 600~

>750~

>1000

>1200

>1500

>1700

>1800

>2000

>2300

>2500

>2600

>2800

>3000

>3200

>3400

>3600

750

1000

~1200

~1500

~1700

~1800

~2000

~2300

~2500

~2600

~2800

~3000

~3200

~3400

~3600

~3800

Positive deviation

6~7.5

0.45

0.55

0.60

0.60

0.75

0.75

0.75

0.80

>7.5~10

0.75

0.75

0.85

0.85

0.90

0.90

0.90

1.00

1.15

1.15

1.15

>10~13

0.75

0.75

0.85

0.85

0.95

0.95

0.95

1.05

1.25

1.25

1.25

1.55

>13~25

0.75

0.75

0.85

0.95

1.15

1.35

1.35

1.55

1.65

1.75

>25~30

0.85

0.85

0.95

1.05

1.25

1.45

1.55

1.65

1.75

1.85

0.95

1.05

1.05

1.15

1.35

1.55

1.65

1.75

1.95

2.05

>34~40

1.15

1.25

1.35

1.45

1.55

1.75

1.85

1.95

2.15

2.25

>40~50

1.35

1.45

1.55

1.65

1.75

1.95

2.05

2.15

2.35

2.45

>50~60

1.65

1.75

1.85

1.95

2.05

2.15

2.15

2.25

2.35

2.55

>60~80

2.55

2.55

2.55

2.55

2.65

2.75

2.85

2.85

2.85

2.85

2.95

2.95

>80~100

2.95

2.95

2.95

2.95

3.05

3.05

3.05

3.15

3.15

3.15

3.15

3.15

>100~120

3.25

3.25

3.25

3.35

3.45

3.45

3.55

3.55

3.55

3.55

3.55

3.55

>30~34 0.25

Table 2 Added Value of Thickness mm Width Nominal

600~

>750~

>1000

>1200

>1500

>1700

>1800

>2000

>2300

>2500

>2600

>2800

>3000

>3200

>3400

>3600

thickness

750

1000

~1200

~1500

~1700

~1800

~2000

~2300

~2500

~2600

~2800

~3000

~3200

~3400

~3600

~3800

Added value of thickness to calculate weight 6~7.5

0.10

0.15

0.18

0.18

0.25

0.25

0.25

0.28

>7.5~10

0.25

0.25

0.30

0.30

0.32

0.32

0.32

0.38

0.45

0.45

0.45

>10~13

0.25

0.25

0.30

0.30

0.35

0.35

0.35

0.40

0.50

0.50

0.50

0.65

>13~25

0.25

0.25

0.30

0.35

0.45

0.55

0.55

0.65

0.70

0.75

>25~30

0.30

0.30

0.35

0.40

0.50

0.60

0.65

0.70

0.75

0.80

>30~34

0.35

0.40

0.40

0.45

0.55

0.65

0.70

0.75

0.85

0.90

>34~40

0.45

0.50

0.55

0.60

0.65

0.75

0.80

0.85

0.95

1.00

>40~50

0.55

0.60

0.65

0.70

0.75

0.85

0.90

0.95

1.05

1.10

>50~60

0.70

0.75

0.80

0.85

0.90

0.95

0.95

1.00

1.05

1.15

>60~80

1.15

1.15

1.15

1.15

1.20

1.25

1.30

1.30

1.30

1.30

1.35

1.35

>80~100

1.35

1.35

1.35

1.35

1.40

1.40

1.40

1.45

1.45

1.45

1.45

1.45

>100~120

1.50

1.50

1.50

1.60

1.60

1.65

1.65

1.65

1.65

1.65

1.65

1.65

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5. Technical Requirements 5.1 Brand number and chemical composition 5.1.1 The brand number and chemical composition of steel (smelting composition) shall meet what specified in Table 3. Table 3 Chemical Composition Chemical composition, % (m/m) Brand number

S C

Mn

Si

V

Mo

Nb

N

Cr

P

Ni Not more than

20R

16MnR

15MnVR

15MnVNR

18MnMoNbR

13MnNiMoNbR

0.40~

0.15~

0.90

0.30

1.20~

0.20~

1.60

0.55

1.20~

0.20~

0.04~

1.60

0.55

0.12

1.30~

0.20~

0.10~

0.010~

1.70

0.55

0.20

0.020

1.20~

0.15~

0.45~

0.025~

1.60

0.50

0.65

0.050

1.20~

0.15~

0.20~

0.005~

0.20~

0.60~

1.60

0.50

0.40

0.020

0.40

1.00

0.12~

0.40~

0.15~

0.45~

0.80~

0.18

0.70

0.40

0.60

1.20

≤0.20

≤0.20

≤0.18

≤0.20

≤0.22

≤0.15

15CrMoR

0.030

0.035

0.030

0.035

0.030

0.035

0.030

0.035

0.030

0.035

0.025

0.025

0.030

0.030

5.1.1.1 For 20R steel of thickness over 60mm, the upper limit of manganese content may be increased to 1.00%. 5.1.1.2 In case the content of Cr, Ni and Copper is regarded as residual elements, they shall not be > 0.30% and their total content shall not be > 0.60%. In case the supplier can guarantee it, analysis may not be done. 5.1.2 Trace alloy elements may be added to improve performance of 20R and 16MnR. 5.1.3 The allowable deviation for chemical composition of final product of steel plate shall meet what specified in GB 222. 5.2 Method of smelting Steel is smelted in Martin furnace, oxygen converter and electric furnace. All steels of different brand number are killed steels.

5.3 Delivery status 5.3.1 The delivery status of steel plates shall meet what specified in Table 4. The tempering temperature for 18MnMoNbR, 13MnNiMoNbR and 15CrMoR shall not be lower than 620℃. Table 4 Physical Performance and Process Performance Cold bend Tensile test

Impact test

Yield

Elongatio

point, σs,

n

MPa

δ5, %

Delivery Brand number

steel plate,

Tensile

mm

strength,

status

σb, MPa

Not less than

400~520

235

20

15MnVNR

>60~100

390~510

205

6~16

510~640

345

normalization

>16~36

490~620

325

of controlled

>36~60

470~600

305

rolling type

>60~100

460~590

285

>100~120

450~580

275

6~16

530~665

390

>16~36

510~645

370

>36~60

490~625

350

6~16

570~710

440

>16~36

550~690

420

>36~60

530~670

400

Normalization

30~60

590~740

440

plus tempering

>60~100

570~720

410

Normalization

≤100

15MnVR

Normalization

(transverse), J

180°

Not less than

31

d = 2a

24 d = 2a 21 20

31 d = 3a

18MnMoNbR

plus tempering

>100~120

Normalization

6~60

20

19

20

31

d = 3a

18

20

34

d = 3a

17

20

34

d = 3a

18

0

31

d = 3a

20

31

d = 3a

390 570~720

13MnNiMoNbR

380 295

19

275

18

450~590

15CrMoR plus tempering

b = 2a

225

>36~60

16MnR

power, Akv

25

20R

Hot rolled,

V impact

245

6~16 >16~36

Temperature, ℃

test Thickness of

>60~100

5.3.2 As agreed with the demand party, the steel plates of 18MnMoNbR, 13MnNiMoNbR and 15CrMoR with thickness over 60mm may be delivered at the status of annealing and tempering. In this case, the sample blank for test shall be heat treated in accordance with what specified in Table 4. The size of the ample blank shall not be < 3a x 3a x a.(a is thickness of the steel plate.) 5.3.3 Steel plates shall be sheared or flare cut for delivery. However, it may be delivered in —1—

the state of rough edges as agreed by both parties of supplier and demander due to the restriction of equipment capacity, and it shall be noted in the contract. 5.4 Physical and process performance 5.4.1 The results of tensile test, , Charpy (V notch) impact test and cold bend test of steel plates shall meet what specified in Table 4. The cold bend test shall be done to steel plates with thickness over 60mm if it is specified in the contract. 5.4.1.1 For steel plates of 6mm ~ 8mm 15MnR used for lamination plate, the tensile strength shall be 550 ~ 690 Mpa. 5.4.1.2 As requested by the demander and specified in the contract, the V notch impact power at ambient temperature for 20R, 16MnR, 15MnVR steels may be at 34J for delivery while for 15MnVNR, 18MnMoNbR, at 41J. 5.4.1.3 As agreed by both parties of the supplier and the demander, the V notch impact test may be done at - 20℃for 16MnR and the impact power shall not be 8mm ~ 11mm steel plates, the size is 7.5 mm x 10mm x 55mm. The test result shall not be < 75% of value specified in Table 4. 5.4.4 High temperature tensile test Specially requested by the demander and agreed by two parties, a high temperature tensile test may be done to steel plates of thickness over 20mm and the test temperature shall be specified in the contract. The value of yield point at high temperature shall meet what specified in Appendix B. 5.5 Ultrasonic testing 5.5.1 Ultrasonic testing may be done to steel plates on demander’s request. 5.5.2 If requested by the demander, the class for qualification in ultrasonic testing shall be agreed by two parties and specified in the contract. 5.6 Surface quality 5.6.1 No crack, air bubble, scar, folding or slag inclusion shall be allowable to surfaces of steel plates. In case above said defect exit, it is allowed to treat them. The depth to treat shall not exceed half of tolerance for thickness of the steel plate calculated from the actual size of the steel plate and the minimum thickness of the steel plate shall be guaranteed. The place where the defect is treated shall be smooth without any sharp corner. —2—

5.6.2 Other defects are allowable to exist. However, the depth shall not exceed half of allowable tolerance for thickness of the steel plate calculated from the actual size of the steel plate and the thickness at the place of defect shall be guaranteed that it does not exceed the minimum allowable thickness of the steel plate. 6. Test Method The items for inspection, the quantity of test samples and the way for sampling as well as test method for each batch of steel plates shall meet what specified in Table 5. 7. Rules for Inspection 7.1 The inspection and acceptance of steel plates shall be done by technical supervision department of the supplier. 7.2 Steel plates shall be inspected and accepted in batches. Steel plates of same furnace number, same thickness and same heat treatment way shall make up one batch. For the steel plates of thickness of 6 ~ 16mm, the weight of the steel plates in each batch shall not be > 15t while for steel plates of thickness over 16mm, the weight in each batch shall not be > 25t. Table 5 Test Method Sequence

Items to test

No.

Quantity of test sample (piece) 1 (each furnace

Sampling method

GB 223

1

Chemical analysis

2

Tensile

1

GB228

3

Cold bend

1

GB 232

4

Impact at ambient temperature

3

5

Impact at low temperature

3

GB4159

6

Tensile at high temperature

1 (each furnace

GB4338

7

Ultrasonic testing

number)

GB 222

Test method

GB 2975

GB2106

number) GB/T 2970

7.3 On request of the demander and agreed by both parties, physical performance test may be done to steel plates of thickness over 16mm piece by piece. 7.4 For steel plates of thickness over 60mm, the test sample for tensile test and impact test shall be taken at 1/4 of thickness (the distance from the axis of the test sample and one rolled face). 7.5 In case the sample blank is used to make test sample for physical performance, the axis of the test sample shall be at 1/4 of the distance away from the surface of sample blank. The distance from the location of the test sample to each side of sample blank shall not be < —3—

thickness of the steel plate. However, the head (or holding part) of the test sample for tensile test is not limited by this. 7.6 In case any item in the test of steel plates does not meet requirements of this Standard, re-test shall be made. 7.6.1 In case the result of Charpy (V notch) impact test does not meet what specified in 5.4.2 or 5.4.3, another 3 test samples shall be taken for test from same steel plate ( or same sample blank). The average value of 6 samples of first and later groups shall not be < specified values. It is allowable that the values of 2 test samples may be < specified values, however, in which only one sample is allowable to be < 70% of specified value. 7.6.2 The re-test of other items shall meet what specified in GB 247. 8. Packing, Marks and Quality Certificates The packing, marks and quality certificates for steel plates shall meet what specified in GB 247.

Appendix A (Appendix of this Standard) Cited Standards Provisions in following standards, referred by this Standard, have constituted provisions of this Standard. At publishing of this Standard, the referred editions are still in force. Any standard may be revised. Any user of this Standard shall study the possibility of using the new edition of following standards. GB 222 – 84 Method for Sampling the Test Sample for Chemical Analysis of Steel and Allowable Deviation for Chemical Composition of Final Products GB 223.3 – 88 Method for Chemical Analysis of Steel and Alloy Measuring Phosphorous Content with Method of diantipyrine methane-molybdophosphoric acid Weight GB 223.4 - 88 Method for Chemical Analysis of Steel and Alloy Measuring Manganese Content with Method of Ammonium Nitrate Oxidation Capacity GB/T223. 11 - 91 Method for Chemical Analysis of Steel and Alloy Measuring Chromium Content with Method of Ammonium Supersulfate Oxidation Capacity GB 223. 14 - 89 Method for Chemical Analysis of Steel and Alloy Measuring Vanadium Content with Photometry of Tantalum Test Agent Extraction GB/T 223.16 - 91 Method for Chemical Analysis of Steel and Alloy Measuring Titanium Content with Photometry of Colored Acid —4—

GB 223.17 - 89 Method for Chemical Analysis of Steel and Alloy Measuring Titanium Content with Photometry of diantipyrine methane GB 223.18 - 94 Method for Chemical Analysis of Steel and Alloy Measuring Copper Content with Method of Sodium Thiosulfate – Iodine Quantity GB 223.19 - 89 Method for Chemical Analysis of Steel and Alloy Measuring Copper Content with Photometry of neocuproine-trichloromethane Extraction GB/T 223.23 - 94 Method for Chemical Analysis of Steel and Alloy Measuring Nickel Content with Direct Photometry of nickel diacetyldioxine GB/T 223.24 - 94 Method for Chemical Analysis of Steel and Alloy Measuring Nickel Content with Method of diacetyldioxine-trichloromethance. Extraction GB 223.26- 89 Method for Chemical Analysis of Steel and Alloy Measuring Molybdenum Content with Direct Photometry of thiocyanate GB 223.27 - 84 Method for Chemical Analysis of Steel and Alloy Measuring Molybdenum Content with Photometry of thiocyanate-butyl butyrate Extraction GB 223.36- 85 Method for Chemical Analysis of Steel and Alloy Measuring Nitrogen Content with Method of Distillation Separation –Capacity. GB 223.37 - 89 Method for Chemical Analysis of Steel and Alloy Measuring Nitrogen Content with Photometry of Distillation Separation –Indigo GB 223.39 - 85 Method for Chemical Analysis of Steel and Alloy Measuring Niobium Content with Photometry of chlorosulfophenol S GB 223.40- 85 Method for Chemical Analysis of Steel and Alloy Measuring Niobium Content with Photometry of Ion Exchanging and Separation – chlorosulfophenol S. GB 223.54 - 87 Method for Chemical Analysis of Steel and Alloy Measuring Nickel Content with Spectro-photometry of Flame Atom Absorption GB 223.58 - 87 Method for Chemical Analysis of Steel and Alloy Measuring Manganese Content with Method of Titration of Sodium arsenite-Sodium nitrite GB 223.59 - 87 Method for Chemical Analysis of Steel and Alloy Measuring Phosphorous Content with Photometry of antimono phosphoro molybdo-blue GB 223.60 - 87 Method for Chemical Analysis of Steel and Alloy Measuring Silicon Content with Method of Dehydration Weight of Perchloric Acid GB 223.61 - 87 Method for Chemical Analysis of Steel and Alloy Measuring Phosphorous Content with Method of ammonium molybdophosphorate Capacity GB 223.62- 87 Method for Chemical Analysis of Steel and Alloy Measuring Phosphorous Content with Photometry of butyl acetate Extraction GB 223.63- 88 Method for Chemical Analysis of Steel and Alloy Measuring Manganese Content with Photometry of Sodium (polassium) periodate —5—

GB 223.64 - 88 Method for Chemical Analysis of Steel and Alloy Measuring Manganese Content with Spectrum Method of Flare Atom Absorption GB 223.67 - 89 Method for Chemical Analysis of Steel and Alloy Measuring Sulfur Content with Photometry of Reduction-distillation methenyl-blue GB 223.68 - 89 Method for Chemical Analysis of Steel and Alloy Measuring Sulfur Content with Method of Burnt – potassium iodate Capacity GB 223.69 - 89 Method for Chemical Analysis of Steel and Alloy Measuring Carbon Content with Method of Burnt Gas Capacity GB/T 223.71 - 91 Method for Chemical Analysis of Steel and Alloy Measuring Carbon Content with Method of Burnt Weight GB/T 223.72 -91 Method for Chemical Analysis of Steel and Alloy Measuring Carbon Content with Method of Aluminum Oxide Chromatogram-Barium Sulfate GB/T 223.74 - 91 Method for Chemical Analysis of Steel and Alloy Measuring Content of Non-combined Carbon with Method of Burnt Weight or Burnt Gas Capacity GB/T 223.76 - 94 Method for Chemical Analysis of Steel and Alloy Measuring Vanadium Content with Spectrumgraph of Flare Atom Absorption GB 228 – 87 Metal Tensile Test Method GB/T 229 – 94 Metal Charpy notch Impact Test Method GB 232 – 82 Metal Bend Test Method GB 247 – 88 General Rules for Inspection and Acceptance, Packing, Marks and Quality Certificate of Steel Plates and Steel Strips GB 709 – 88 Size, Profile, Weight and Allowable Deviation for Hot Rolled Steel Plates and Steel Strips GB/T 2970 – 91 Method for Ultrasonic Testing of Medium Thick Steel Plates GB 2975 – 82 Regulations for Sampling for Physical and Process Performance Test of Steel Products GB 4338 – 84 Method for Tensile Test of Metals at High Temperature.

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Appendix B (Appendix of this Standard) High Temperature Performance of Steel Plates for Pressure Vessels B1 For specified residue tensile stress at high temperature (σr0..2 ), see Table B1.

Table B1 σr0..2, at following temperature (℃), MPa Brand number

20R

Thickness

Not less than 200

250

300

350

400

450

500

21~36

186

167

153

139

129

121

—

>36~60

178

161

147

133

123

116

—

>60~100

164

147

135

123

113

106

—

21~36

255

235

215

200

190

180

—

>36~60

240

220

200

185

175

165

—

>60~100

225

205

185

175

165

155

—

>100~120

220

200

180

170

160

150

—

21~36

295

280

260

240

220

205

—

>36~60

280

265

245

225

210

195

—

21~36

340

315

290

270

250

235

—

>36~60

320

300

275

255

235

220

—

30~60

380

370

360

350

335

315

—

>60~100

360

350

340

330

315

295

—

30~100

355

350

345

335

305

—

—

>100~120

345

340

335

325

300

—

—

21~60

240

225

210

200

189

179

174

>60~100

220

210

196

186

176

167

162

16MnR

15MnVR

15MnVNR

18MnMoNbR

13MnNiMoNbR

15CrMoR ————————————

—7—