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Position: Chinese Standard in English/Q/BQB 408-2019
Q/BQB 408-2019   Cold formed low carbon steel sheet and strip for cold forming (English Version)
Standard No.: Q/BQB 408-2019 Status:superseded remind me the status change

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Word Count: 3000 words Price(USD):160.0 remind me the price change

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Implemented on:2019-4-10 Delivery: via email in 1 business day
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Standard No.: Q/BQB 408-2019
English Name: Cold formed low carbon steel sheet and strip for cold forming
Chinese Name: 冷成形用冷轧低碳钢板及钢带
Professional Classification: Q/    
Issued on: 2019-2-2
Implemented on: 2019-4-10
Status: superseded
Superseded by:Q/BQB 408-2021 Cold formed low carbon steel sheet and strip for cold forming
Superseded on:2021-8-10
Superseding:Q/BQB 408-2018 Cold formed low carbon steel sheet and strip for cold forming
Language: English
File Format: PDF
Word Count: 3000 words
Price(USD): 160.0
Delivery: via email in 1 business day
This standard is developed in accordance with the rules given in G/T 1.1-2009 Directives for standardization - Part 1: Structure and drafting of standards. This standard is prepared with reference to JIS G 3141: 2017, EN 10130: 2006, and JFS A 2001: 2014. This standard replaces Q/BQB 408-2018. The following main changes have been made with respect to Q/BQB 408-2018: ——the expression of special control requirements for roughness is added; ——the comparison table between similar designations in this standard and relevant Chinese and foreign standards in Annex C is revised; Annex A to this standard is normative and Annexes B and C are informative. This standard was proposed by the Manufacturing Management Department of Baoshan Iron & Steel Co., Ltd. This standard is under the jurisdiction of the Manufacturing Management Department of Baoshan Iron & Steel Co., Ltd. This standard was drafted by the Manufacturing Management Department of Baoshan Iron & Steel Co., Ltd. Drafters of this revision are: Min YUAN and Mingxi MAO. The previous editions of this standard are as follows: Q/BQB 408-1988, Q/BQB 408-1994, Q/BQB 408-1999, Q/BQB 408-2003, Q/BQB 408-2009, Q/BQB 408-2014, and Q/BQB 408-2018. Low carbon cold-rolled steel sheet and strip for cold forming 1 Chemical composition Table 4 Designation Chemical compositiona (heat analysis), % (mass fraction) C Mn P S Alt SPCC\SPCC-Xb ≤0.15 ≤0.60 ≤0.10 ≤0.025 - SPCD ≤0.10 ≤0.45 ≤0.030 ≤0.025 ≥0.015 SPCE ≤0.08 ≤0.40 ≤0.025 ≤0.020 ≥0.015 SPCF ≤0.08 ≤0.30 ≤0.020 ≤0.020 ≥0.015 SPCG ≤0.06 ≤0.25 ≤0.020 ≤0.020 ≥0.015 a Addition of other alloying elements is permitted. b SPCC-X is a specific designation. Table 5 Designation Chemical composition (heat analysis), % (mass fraction) C Mn P S Alt Ti DC01a ≤0.10 ≤0.50 ≤0.035 ≤0.025 ≥0.015 - DC03a ≤0.08 ≤0.45 ≤0.030 ≤0.025 ≥0.015 - DC04a ≤0.08 ≤0.40 ≤0.025 ≤0.020 ≥0.015 - DC05 ≤0.008 ≤0.30 ≤0.020 ≤0.020 ≥0.015 ≤0.20b DC06 ≤0.006 ≤0.30 ≤0.020 ≤0.020 ≥0.015 ≤0.20b DC07 ≤0.006 ≤0.25 ≤0.020 ≤0.020 ≥0.015 ≤0.20b a Addition of Nb and/or Ti is permitted. b It is allowed to replace part of Ti with Nb, and the total content of Nb and Ti shall not be greater than 0.20%. Table 6 Designation Chemical composition (heat analysis), % (mass fraction) C Mn P S Alt Ti BLCa ≤0.10 ≤0.50 ≤0.035 ≤0.025 ≥0.015 - BLDa ≤0.08 ≤0.45 ≤0.030 ≤0.025 ≥0.015 - BUSD ≤0.010 ≤0.40 ≤0.025 ≤0.020 ≥0.015 ≤0.20b BUFD ≤0.008 ≤0.30 ≤0.020 ≤0.020 ≥0.015 ≤0.20b BSUFD ≤0.006 ≤0.30 ≤0.020 ≤0.020 ≥0.015 ≤0.20b a Addition of Nb and/or Ti is permitted. b It is allowed to replace part of Ti with Nb, and the total content of Nb and Ti shall not be greater than 0.20%. 2 Mechanical properties Table 7 Designation Tensile test Yield strength a, b, c MPa Tensile strength MPa ≥ Percentage elongation after fracturec A50mm % ≥ rmd, e ≥ Nominal thickness, mm Nominal thickness, mm <0.25 0.25~<0.30 0.30~<0.40 0.40~<0.60 0.60~<1.0 1.0.~<1.6 ≥1.6 0.5~1.0 >1.0~1.6 SPCC — 270 25 28 31 34 36 37 38 — — SPCD 140~220 270 27 30 33 36 38 39 40 — — SPCE 130~200 270 29 32 35 38 40 41 42 — — SPCF 120~190 270 — — 37 40 42 43 44 — — SPCG 110~180 270 — — — 42 44 45 46 1.5 1.4 a RP0.2 is adopted if the yield phenomenon is not obvious, otherwise, ReL is adopted. b In addition to SPCC steel, if the thickness is greater than 0.40 mm but not greater than 0.60 mm, the specified value for yield strength is allowed to increase by 20 MPa. For thickness not greater than 0.40 mm, the value is allowed to increase by 40 MPa. c No. 5 specimen specified in JIS Z 2241 is adopted, and the specimen is in longitudinal direction. d When the thickness is < 0.5 mm or >1.6 mm, no requirements are made on the value of r. e rm = (r90 + 2r45 + r0) ∕ 4.
Foreword i 1 Chemical composition 2 Mechanical properties 3 Inspection and test 4 Annex
Referred in Q/BQB 408-2019:
*GB 18401-2003 National General Safety Technical Code for Textile Products
*GB 18401-2010 National general safety technical code for textile products
*QB/T 1333-2010/XG1-2014 Handbag and knapsack,including Amendment 1
*QB/T 1333-2018 Handbag and Knapsack
*FZ/T 73025-2013 Knitted garment and adornment for infant
*FZ/T 73018-2021 Wool knitting goods
Code of China
Standard
Q/BQB 408-2019  Cold formed low carbon steel sheet and strip for cold forming (English Version)
Standard No.Q/BQB 408-2019
Statussuperseded
LanguageEnglish
File FormatPDF
Word Count3000 words
Price(USD)160.0
Implemented on2019-4-10
Deliveryvia email in 1 business day
Detail of Q/BQB 408-2019
Standard No.
Q/BQB 408-2019
English Name
Cold formed low carbon steel sheet and strip for cold forming
Chinese Name
冷成形用冷轧低碳钢板及钢带
Chinese Classification
Professional Classification
Q/
ICS Classification
Issued by
Issued on
2019-2-2
Implemented on
2019-4-10
Status
superseded
Superseded by
Q/BQB 408-2021 Cold formed low carbon steel sheet and strip for cold forming
Superseded on
2021-8-10
Abolished on
Superseding
Q/BQB 408-2018 Cold formed low carbon steel sheet and strip for cold forming
Language
English
File Format
PDF
Word Count
3000 words
Price(USD)
160.0
Keywords
Q/BQB 408-2019, Q/BQBT 408-2019, QBQBT 408-2019, Q/BQB408-2019, Q/BQB 408, Q/BQB408, Q/BQBT408-2019, Q/BQBT 408, Q/BQBT408, QBQBT408-2019, QBQBT 408, QBQBT408
Introduction of Q/BQB 408-2019
This standard is developed in accordance with the rules given in G/T 1.1-2009 Directives for standardization - Part 1: Structure and drafting of standards. This standard is prepared with reference to JIS G 3141: 2017, EN 10130: 2006, and JFS A 2001: 2014. This standard replaces Q/BQB 408-2018. The following main changes have been made with respect to Q/BQB 408-2018: ——the expression of special control requirements for roughness is added; ——the comparison table between similar designations in this standard and relevant Chinese and foreign standards in Annex C is revised; Annex A to this standard is normative and Annexes B and C are informative. This standard was proposed by the Manufacturing Management Department of Baoshan Iron & Steel Co., Ltd. This standard is under the jurisdiction of the Manufacturing Management Department of Baoshan Iron & Steel Co., Ltd. This standard was drafted by the Manufacturing Management Department of Baoshan Iron & Steel Co., Ltd. Drafters of this revision are: Min YUAN and Mingxi MAO. The previous editions of this standard are as follows: Q/BQB 408-1988, Q/BQB 408-1994, Q/BQB 408-1999, Q/BQB 408-2003, Q/BQB 408-2009, Q/BQB 408-2014, and Q/BQB 408-2018. Low carbon cold-rolled steel sheet and strip for cold forming 1 Chemical composition Table 4 Designation Chemical compositiona (heat analysis), % (mass fraction) C Mn P S Alt SPCC\SPCC-Xb ≤0.15 ≤0.60 ≤0.10 ≤0.025 - SPCD ≤0.10 ≤0.45 ≤0.030 ≤0.025 ≥0.015 SPCE ≤0.08 ≤0.40 ≤0.025 ≤0.020 ≥0.015 SPCF ≤0.08 ≤0.30 ≤0.020 ≤0.020 ≥0.015 SPCG ≤0.06 ≤0.25 ≤0.020 ≤0.020 ≥0.015 a Addition of other alloying elements is permitted. b SPCC-X is a specific designation. Table 5 Designation Chemical composition (heat analysis), % (mass fraction) C Mn P S Alt Ti DC01a ≤0.10 ≤0.50 ≤0.035 ≤0.025 ≥0.015 - DC03a ≤0.08 ≤0.45 ≤0.030 ≤0.025 ≥0.015 - DC04a ≤0.08 ≤0.40 ≤0.025 ≤0.020 ≥0.015 - DC05 ≤0.008 ≤0.30 ≤0.020 ≤0.020 ≥0.015 ≤0.20b DC06 ≤0.006 ≤0.30 ≤0.020 ≤0.020 ≥0.015 ≤0.20b DC07 ≤0.006 ≤0.25 ≤0.020 ≤0.020 ≥0.015 ≤0.20b a Addition of Nb and/or Ti is permitted. b It is allowed to replace part of Ti with Nb, and the total content of Nb and Ti shall not be greater than 0.20%. Table 6 Designation Chemical composition (heat analysis), % (mass fraction) C Mn P S Alt Ti BLCa ≤0.10 ≤0.50 ≤0.035 ≤0.025 ≥0.015 - BLDa ≤0.08 ≤0.45 ≤0.030 ≤0.025 ≥0.015 - BUSD ≤0.010 ≤0.40 ≤0.025 ≤0.020 ≥0.015 ≤0.20b BUFD ≤0.008 ≤0.30 ≤0.020 ≤0.020 ≥0.015 ≤0.20b BSUFD ≤0.006 ≤0.30 ≤0.020 ≤0.020 ≥0.015 ≤0.20b a Addition of Nb and/or Ti is permitted. b It is allowed to replace part of Ti with Nb, and the total content of Nb and Ti shall not be greater than 0.20%. 2 Mechanical properties Table 7 Designation Tensile test Yield strength a, b, c MPa Tensile strength MPa ≥ Percentage elongation after fracturec A50mm % ≥ rmd, e ≥ Nominal thickness, mm Nominal thickness, mm <0.25 0.25~<0.30 0.30~<0.40 0.40~<0.60 0.60~<1.0 1.0.~<1.6 ≥1.6 0.5~1.0 >1.0~1.6 SPCC — 270 25 28 31 34 36 37 38 — — SPCD 140~220 270 27 30 33 36 38 39 40 — — SPCE 130~200 270 29 32 35 38 40 41 42 — — SPCF 120~190 270 — — 37 40 42 43 44 — — SPCG 110~180 270 — — — 42 44 45 46 1.5 1.4 a RP0.2 is adopted if the yield phenomenon is not obvious, otherwise, ReL is adopted. b In addition to SPCC steel, if the thickness is greater than 0.40 mm but not greater than 0.60 mm, the specified value for yield strength is allowed to increase by 20 MPa. For thickness not greater than 0.40 mm, the value is allowed to increase by 40 MPa. c No. 5 specimen specified in JIS Z 2241 is adopted, and the specimen is in longitudinal direction. d When the thickness is < 0.5 mm or >1.6 mm, no requirements are made on the value of r. e rm = (r90 + 2r45 + r0) ∕ 4.
Contents of Q/BQB 408-2019
Foreword i 1 Chemical composition 2 Mechanical properties 3 Inspection and test 4 Annex
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