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GB/T 3880.2-2024 English PDF (GB/T 3880.2-2012, GB/T 3880.2-2006)

GB/T 3880.2-2024_English: PDF (GB/T3880.2-2024)
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GB/T 3880.2-2024English620 Add to Cart 0--9 seconds. Auto-delivery Wrought aluminium and aluminium alloy plates, sheets and strips for general engineering - Part 2: Mechanical properties Valid GB/T 3880.2-2024
GB/T 3880.2-2012English85 Add to Cart 0--9 seconds. Auto-delivery Wrought aluminium and aluminium alloy plates, sheets and strips for general engineering -- Part 2: Mechanical properties Obsolete GB/T 3880.2-2012
GB/T 3880.2-2006EnglishRFQ ASK 6 days [Need to translate] Wrought aluminium and aluminium alloy plates, sheets and strips for general engineering -- Part 2: Mechanical properties Obsolete GB/T 3880.2-2006


BASIC DATA
Standard ID GB/T 3880.2-2024 (GB/T3880.2-2024)
Description (Translated English) Wrought aluminium and aluminium alloy plates, sheets and strips for general engineering - Part 2: Mechanical properties
Sector / Industry National Standard (Recommended)
Classification of Chinese Standard H61
Classification of International Standard 77.150.10
Word Count Estimation 42,42
Date of Issue 2024-04-25
Date of Implementation 2024-11-01
Older Standard (superseded by this standard) GB/T 3880.2-2012
Drafting Organization Southwest Aluminum (Group) Co., Ltd., Nonferrous Metals Technology and Economic Research Institute Co., Ltd., Northeast Light Alloy Co., Ltd., Chalco Ruimin Co., Ltd., Xiamen Xiashun Aluminum Foil Co., Ltd., Youyan Engineering Technology Research Institute Co., Ltd., Guangxi Nannan Aluminum Processing Co., Ltd., Yinbang Metal Composite Materials Co., Ltd., Tianjin Zhongwang Aluminum Co., Ltd., Shandong Nanshan Aluminum Co., Ltd., Fujian Nanlu Strip Processing Co., Ltd., Guangxi Guangtou Liuzhou Aluminum Co., Ltd., Chongqing Guochuang Light Alloy Research Institute Co., Ltd.
Administrative Organization National Technical Committee on Standardization of Nonferrous Metals (SAC/TC 243)
Proposing organization China Nonferrous Metals Industry Association
Issuing agency(ies) State Administration for Market Regulation, National Standardization Administration

BASIC DATA
Standard ID GB/T 3880.2-2012 (GB/T3880.2-2012)
Description (Translated English) Wrought aluminium and aluminium alloy plates, sheets and strips for general engineering - Part 2: Mechanical properties
Sector / Industry National Standard (Recommended)
Classification of Chinese Standard H61
Classification of International Standard 77.150.10
Word Count Estimation 55,556
Older Standard (superseded by this standard) GB/T 3880.2-2006
Adopted Standard EN 485-2008, NEQ; ASTM B209M-2007, NEQ; JIS H4000-2006, NEQ
Drafting Organization Southwest Aluminum (Group)Co., Ltd.
Administrative Organization National Standardization Technical Committee of non-ferrous metals
Regulation (derived from) National Standards Bulletin No. 41 of 2012
Issuing agency(ies) General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China, Standardization Administration of the People's Republic of China
Summary This standard specifies the general industrial aluminum and aluminum alloy sheet, strip mechanical properties. This section applies to general industrial aluminum and aluminum alloy rolled sheet, strip (hereinafter referred to as plate, strip).

BASIC DATA
Standard ID GB/T 3880.2-2006 (GB/T3880.2-2006)
Description (Translated English) Wrought aluminium and aluminium alloy plates, sheets and strips for general engineering. Part 2: Mechanical properties
Sector / Industry National Standard (Recommended)
Classification of Chinese Standard H61
Classification of International Standard 77.150.10
Word Count Estimation 28,284
Date of Issue 2006-09-26
Date of Implementation 2007-02-01
Adopted Standard ISO 6361-2-1990, NEQ; ASTM B209M-2002, NEQ; EN 485.2-1993, NEQ; JIS H4000-2000, NEQ
Drafting Organization Southwest Aluminum (Group) Co., Ltd.
Administrative Organization National Nonferrous Metals Standardization Technical Committee
Regulation (derived from) China National Standard Approval Announcement 2006 No.10 (Total No.97); National Standard Announcement 2012 No.41
Proposing organization China Nonferrous Metals Industry Association
Issuing agency(ies) Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China; Standardization Administration of China
Summary This standard specifies the general industrial aluminum and aluminum alloy plate, mechanical properties of the strip. This section applies to general industrial aluminum and aluminum alloy rolled plate, strip.


GB/T 3880.2-2024 GB NATIONAL STANDARD OF THE PEOPLE’S REPUBLIC OF CHINA ICS 77.150.10 CCS H 61 Replacing GB/T 3880.2-2012 Wrought aluminum and aluminum alloy plates, sheets and strips for general engineering - Part 2: Mechanical properties ISSUED ON: APRIL 25, 2024 IMPLEMENTED ON: NOVEMBER 01, 2024 Issued by: State Administration for Market Regulation; National Standardization Administration. Table of Contents Foreword ... 3 Introduction ... 8 1 Scope ... 9 2 Normative references ... 9 3 Terms and definitions ... 9 4 Mechanical properties ... 9 Foreword This document was drafted in accordance with the provisions of GB/T 1.1-2020 "Directives for standardization - Part 1: Rules for the structure and drafting of standardizing documents". This document is Part 2 of GB/T 3880 "Wrought aluminum and aluminum alloy plates, sheets and strips for general engineering". GB/T 3880 has published the following parts: - Part 1: Technical conditions of delivery; - Part 2: Mechanical properties; - Part 3: Tolerances on forms and dimensions. This document replaces GB/T 3880.2-2012 "Wrought aluminium and aluminium alloy plates, sheets and strips for general engineering - Part 2: Technical conditions of delivery". Compared with GB/T 3880.2-2012, in addition to structural adjustments and editorial changes, the main technical changes are as follows: - In the 1××× series, DELETE the mechanical property indicators of designations 1A97, 1A93, 1A85; DELETE the mechanical property indicators of states O, H12, H22, H14, H24, H16, H26, H18, H112 from 1080A as well as the mechanical property indicators of states H111 and H112 from 1070A; DELETE the mechanical property indicators of state H19 from 1050A, the states O, H12, H22, H24, H16, H26, H18, H112 from 1145, the states O, H12, H22, H24, H26 from 1235; DELETE the mechanical property indicators of state H28 from 1100 and states O, H111, H12, H19 from 1200 (see Chapter 2 of the 2012 edition); ADD the mechanical property indicators of state H112 in 1A99, the state H19 to 1070, 1060, 1235, 1100, the states H111 and H19 to 1050; ADD the mechanical property indicators of states O and H112 to 1350, the states O, H112, H18 to 1035, the state O to 1A30 (see Chapter 4); CHANGE the mechanical property requirements of state H112 of 1A90 and 1070, the state H26 of 1070, the states O, H12/H22, H14/H24, H18 of 1070 and 1070A; CHANGE the mechanical property requirements of the states O, H112, H12, H22, H14, H24, H16, H26 of 1060; CHANGE the mechanical property requirements of the states O and H16 of 1050, the states H112, H12, H22, H14, H24, H26, H18 of 1050 and 1050A; CHANGE the mechanical property requirements of the state H14 of 1145, the states H16 and H18 of 1235; CHANGE the mechanical property requirements of the states O, H112, H22, H14, H24, H16/H26, H18 of 1100, the states H112, H22, H14, H16 of 1200 (see Chapter 4; Chapter 2 of the 2012 edition); - In the 2××× series, DELETE the mechanical property indicators of the states O, T4, T6 from aluminum clad 2014A, the state O from 2017 and aluminum clad 2017, the state T3 from aluminum clad 2017, the states O and T4 from aluminum clad 2017A; DELETE the mechanical property indicators of the T81 state of aluminum clad 2219; DELETE the O and T3 states of 2A11, the T1 state of 2A14, the T3 state of 2E12 and aluminum clad 2E12 (see Chapter 2 of the 2012 edition); ADD the mechanical property indicators of T651 state to 2014, the O state to 2014, aluminum clad 2014, 2017A, 2219; ADD the mechanical property indicators of T451 state to 2017, 2017A, the states T1, T351, T6, T651, T851, T89A51 to 2219; ADD the mechanical property indicators of states O, T1, T351, T851 to 2024, the state O to aluminum clad 2024; ADD the mechanical property indicators of state T351 to 2A12, the states T4 and T651 to 2A14 (see Chapter 4); CHANGE the mechanical property requirements for state O of 2014, aluminum clad 2014, 2017A, 2219, aluminum clad 2219 and 2024, aluminum clad 2024 and 2A14, the state T3 of 2014, 2017, 2024, 2A12; CHANGE mechanical property requirements for the T4 state in 2014, 2014A, 2017, aluminum clad 2017, 2017A, 2A11, 2A12, aluminum clad 2A12, the T6 state of 2014, 2014A, 2A14; CHANGE the T81 state of 2219, the T87 state of 2219 and aluminum clad 2219, the T1 state of 2A11 and aluminum clad 2A12 (see Chapter 4; Chapter 2 of the 2012 edition); - In the 3××× series, DELETE the mechanical property indicators of the H28 state from 3003, the H112 state from 3004, the O, H111, H112, H12/H22, H14/H24, H16/H26, H18/H28, H19 states from 3103; DELETE the mechanical property indicator of the H12/H22, H28, H29/H39 states from 3104, the H18 and H19 states from 3005, the H111 and H19 states from 3105 (see Chapter 2 of the 2012 edition); ADD the mechanical property indicator of the H19 state to 3102, the H44 and H46 states to 3003 and 3004; ADD the mechanical property indicator of the H42, H44, H46, H29 states to 3105, the H24, H26, H28 states to 3105A,the H22 and H19 states to 3A21 (see Chapter 4); CHANGE the mechanical property requirements of the H18 state of 3102, the O, H111, H112, H12, H22, H14, H24, H16, H26, H18 states of 3003, the O, H111, H26/H36 states of 3004; CHANGE the mechanical property requirements of O, H111, H32, H14, H24/H34, H16, H26/H36, H19 states of 3104, the H22, H14, H16 states of 3005, the H14, H16, H26 states of 3105; CHANGE the mechanical property requirements of O, H112, H24, H18 states of 3A21 (see Chapter 4; Chapter 2 of the 2012 edition); - In the 4××× series, DELETE the mechanical property indicators of the states O, H12, H14 from 4006, the state H111 from 4007, the states O, H111, H12, H14, H16, H18 from 4015 (Chapter 2 of the 2012 edition); CHANGE the mechanical property requirements for state H12 of 4007 (see Chapter 4; Chapter 2 of the 2012 edition); - In the 5××× series, DELETE mechanical property indicator of state H112 from 5005 and 5005A, the H24/H34 and H26/H36 state from 5040, the H12, H16, H36, H18, H28/H38, H112 states from 5049; DELETE the mechanical property indicators of the states O, H111, H22, H24, H26, H28 from 5449, the states O, H111, H12, H16, H36, H18, H28/H38, H112 from 5050, the states H12, H14, H24/H34, H16, H36, H18, H28/H38 from 5251; DELETE the mechanical property Wrought aluminum and aluminum alloy plates, sheets and strips for general engineering - Part 2: Mechanical properties 1 Scope This document specifies the wrought aluminum and aluminum alloy plates, sheets and strips for general engineering. This document is applicable to hot-rolled or cold-rolled plates and strips of Wrought aluminum and aluminum alloy plates, sheets and strips for general engineering (hereinafter referred to as "plates and strips"). 2 Normative references This document has no normative references. 3 Terms and definitions This document has no terms and definitions that need to be defined. 4 Mechanical properties The room temperature tensile mechanical properties of plates and strips shall comply with the provisions of Table 1. The bending test shall be carried out according to the bending radius specified in Table 1; the surface of the specimen shall not crack. For plate and strip products whose mechanical properties are not listed in the Table, the mechanical properties shall be determined by negotiation between the supplier and the buyer; meanwhile it shall be indicated in the order (or contract). ......


GB/T 3880.2-2012 GB NATIONAL STANDARD OF THE PEOPLE’S REPUBLIC OF CHINA ICS 77.150.10 H 61 Replacing GB/T 3880.2-2006 Wrought Aluminium and Aluminium Alloy Plates, Sheets and Strips for General Engineering – Part 2. Mechanical Properties ISSUED ON. DECEMBER 31, 2012 IMPLEMENTED ON. OCTOBER 1, 2013 Issued by. General Administration of Quality Supervision, Inspection and Quarantine; Standardization Administration of the People's Republic of China. Table of Contents Foreword ... 3  1 Scope ... 5  2 Mechanical Properties ... 5  Foreword GB/T 3880 is divided into three parts under the general title of "Wrought Aluminium and Aluminium Alloy Plates, Sheets and Strips For General Engineering". — Part 1. Technical Conditions of Delivery; — Part 2. Mechanical Properties; — Part 3. Tolerances on Forms and Dimensions. This Part is part 2 of GB/T 3880. This Part was drafted according to the rules specified in GB/T 1.1-2009. This Part replaces GB/T 3880.2-2006 "Wrought Aluminium and Aluminium Alloy Plates Sheets and Strips for General Engineering - Part 2. Mechanical Properties". Compared with GB/T 3880.2-2006, the main technical changes in this Part are as follows. — Alloys 1070A, 1080A, 2017A, 2A12, 2A14, 2014A, 2E12, 2219, 3103, 3A21, 4006, 4007, 4015, 5A02, 5005A, 5040, 5049, 5449, 5050, 5251, 5154A, 5754, 5454, 5383, 6016, 7020, 7021, 7022, 7A04, 7A09, 7475, 8011 and 8079 were added; — Partial properties of original alloys 1050A, 1100, 1200, 3003 (except tempers H14 and H24), 3004, 5005, 5052, 5083, 5086, 6061, 6082, 8011A and 7075 were modified. This Part uses redrafting method and references to EN 485-2.2008 "Aluminium and Aluminium Alloys - Sheet, Strip and Plate - Part 2. Mechanical Properties", ASTM B209M-07 "Aluminum and Aluminum Alloy Sheet and Plate" and JIS H4000.2006 "Aluminium and Aluminium Alloys - Sheets, Strips and Plates". This Part is not equivalent to EN 485-2.2008, ASTM B209M-07 and JIS H4000.2006. This Part shall be under the jurisdiction of National Technical Committee 243 on Nonferrous Metals of Standardization Administration of China (SAC/TC 243). Chief drafting organizations of this Part. Southwest Aluminum (Group) Co., Ltd., China Institute of Weights and Measures Quality of Nonferrous Metal Industry, Northeast Light Alloy Co., Ltd., Chinalco Ruimin Co., Ltd., Xiashun Aluminium Foil Co., Ltd., Northwest Branch of Aluminum Corporation of China, Aleris Dingsheng Aluminum (Zhenjiang) Co., Ltd. AND Fujian Nanping Aluminium Sheet & Strip Co., Ltd. Chief drafting staffs of this Part. Lin Lin, Zhang Yu, Ge Lixin, Li Ruishan, Zhang Siping, Tang Dengyi, Wang Guojun, Qiu Longtao, Wang Xiguang, Huang Rong, Xie Tingcui, Dong Zefang, Peng Wenwei, Zhao Yongjun and Huang Ruiyin. Wrought Aluminium and Aluminium Alloy Plates, Sheets and Strips for General Engineering – Part 2. Mechanical Properties 1 Scope This Part of GB/T 3880 specifies mechanical properties of wrought aluminium and aluminium alloy plates, sheets and strips for general engineering applications. This Part is applicable to wrought aluminium and aluminium alloy plates, sheets and strips (hereafter referred to as “plates, sheets and strips”) for general engineering applications. 2 Mechanical Properties Tensile testing of plates, sheets and strips under room temperature shall be in accordance with those specified in Table 1. During bending properties testing, the bend radius shall be in accordance with those specified in Table 1. Plates, sheets and strips after bending test shall be free from crack on the surface. For the mechanical properties of plates, sheets and strips with a thickness exceeding those specified in Table 1, the actual measured results shall be accompanied. Table 1 (continued) Designation Al-clad type Supply temper Sample temper Thickness mm Test results of tensile testing under room temperature Bend radius b Tensile strength Rm/MPa Specified non- proportional elongation strength Rp0.2/MPa Elongation a/% A50 mm A 90° 180° Not less than 1080A — H22 H22 >1.50 ~ 3.00 80 ~ 120 50 11 — 0.5t 0.5t>3.00 ~ 6.00 13 — 1.0t — H14 H14 >0.20 ~ 0.50 100 ~ 140 70 4 — 0t 0.5t >0.50 ~ 1.50 4 — 0.5t 0.5t >1.50 ~ 3.00 5 — 1.0t 1.0t >3.00 ~ 6.00 6 — 1.5t — H24 H24 >0.20 ~ 0.50 100 ~ 140 60 5 — 0t 0.5t >0.50 ~ 1.50 6 — 0.5t 0.5t >1.50 ~ 3.00 7 — 1.0t 1.0t >3.00 ~ 6.00 9 — 1.5t — H16 H16 >0.20 ~ 0.50 110 ~ 150 90 2 — 0.5t 1.0t >0.50 ~ 1.50 2 — 1.0t 1.0t >1.50 ~ 4.00 3 — 1.0t 1.0t H26 H26 >0.20 ~ 0.50 110 ~ 150 80 3 — 0.5t — >0.50 ~ 1.50 3 — 1.0t — >1.50 ~ 4.00 4 — 1.0t — H18 H18 >0.20 ~ 0.50 2 — 1.0t — >0.50 ~ 1.50 2 — 2.0t — >1.50 ~ 3.00 2 — 2.5t — H112 H112 >6.00 ~ 12.50 70 — 20 — — — >12.50 ~ 25.00 70 — — 20 — — F — 2.50 ~ 25.00 — — — — — — 1070 — O O >0.20 ~ 0.30 55 ~ 95 15 — 0t — >0.30 ~ 0.50 20 — 0t — >0.50 ~ 0.80 25 — 0t — >0.80 ~ 1.50 30 — 0t — >1.50 ~ 6.00 35 — 0t — >6.00 ~ 12.50 35 — — — >12.50 ~ 50.00 — 30 — — Table 1 (continued) Designation Al-clad type Supply temper Sample temper Thickness mm Test results of tensile testing under room temperature Bend radius b Tensile strength Rm/MPa Specified non- proportional elongation strength Rp0.2/MPa Elongation a/% A50 mm A 90° 180° Not less than 1050 — H26 H26 >0.80 ~ 1.50 120 85 3 — 2.0t — >1.50 ~ 4.00 4 — 2.0t — >0.20 ~ 0.50 130 — 1 — — — H18 H18 >0.50 ~ 0.80 2 — — — >0.80 ~ 1.50 3 — — — >1.50 ~ 3.00 4 — — — >4.50 ~ 6.00 85 45 10 — — — >6.00 ~ 12.50 80 45 10 — — — H112 H112 >12.50 ~ 25.00 70 35 — 16 — — >25.00 ~ 50.00 65 30 — 22 — — >50.00 ~ 75.00 65 30 — 22 — — F — >2.50 ~ 150.00 — — — 1050A — H111 H111 >0.20 ~ 0.50 20 — 0t 0t >0.50 ~ 1.50 22 — 0t 0t >1.50 ~ 3.00 >65 ~ 95 20 26 — 0t 0t >3.00 ~ 6.00 29 — 0.5t 0.5t >6.00 ~ 12.50 35 — 1.0t 1.0t >12.50 ~ 180.00 — 32 — — >0.20 ~ 0.50 2 — 0t 0.5t H12 H12 >0.50 ~ 1.50 >85 ~ 125 65 4 — 0t 0.5t >1.50 ~ 3.00 5 — 0.5t 0.5t>3.00 ~ 6.00 7 — 1.0t 1.0t >0.20 ~ 0.50 4 — 0t 0.5t H22 H22 >0.50 ~ 1.50 >85 ~ 125 55 5 — 0t 0.5t >1.50 ~ 3.00 6 — 0.5t 0.5t>3.00 ~ 6.00 11 — 1.0t 1.0t >0.20 ~ 0.50 2 — 0t 1.0t H14 H14 >0.50 ~ 1.50 >105 ~ 145 85 2 — 0.5t 1.0t >1.50 ~ 3.00 4 — 1.0t 1.0t>3.00 ~ 6.00 5 — 1.5t — Table 1 (continued) Designation Al-clad type Supply temper Sample temper Thickness mm Test results of tensile testing under room temperature Bend radius b Tensile strength Rm/MPa Specified non- proportional elongation strength Rp0.2/MPa Elongation a/% A50 mm A 90° 180° Not less than >0.50 ~ 0.80 2 — — — H18 H18 >0.80 ~ 1.50 125 3 — — — >1.50 ~ 4.50 4 — — — 1145 >4.50 ~ 6.50 85 45 10 — — — H112 H112 >6.50 ~ 12.50 80 45 10 — — — >12.50 ~ 25.00 70 35 — 16 — — F — >2.50 ~ 150.00 — — — 1235 — O O >0.20 ~ 1.00 65 ~ 105 — 15 — — — >0.20 ~ 0.30 95 ~ 130 — 2 — — — >0.30 ~ 0.50 3 — — — H12 H12 >0.50 ~ 1.50 6 — — — >1.50 ~ 3.00 8 — — — >3.00 ~ 4.50 9 — — — >0.20 ~ 0.30 2 — — — >0.30 ~ 0.50 3 — — — H22 H22 >0.50 ~ 1.50 95 6 — — — >1.50 ~ 3.00 8 — — — >3.00 ~ 4.50 9 — — — >0.20 ~ 0.30 1 — — — H14 H14 >0.30 ~ 0.50 115 ~ 150 2 — — — >0.50 ~ 1.50 3 — — — >1.50 ~ 3.00 4 — — — >0.20 ~ 0.30 1 — — — H24 H24 >0.30 ~ 0.50 115 2 — — — >0.50 ~ 1.50 3 — — — >1.50 ~ 3.00 4 — — — >0.20 ~ 0.50 1 — — — H16 H16 >0.50 ~ 1.50 130 ~ 165 2 — — — >1.50 ~ 4.00 3 — — — H26 H26 >0.20 ~ 0.50 130 — 1 — — — Table 1 (continued) Designation Al-clad type Supply temper Sample temper Thickness mm Test results of tensile testing under room temperature Bend radius b Tensile strength Rm/MPa Specified non- proportional elongation strength Rp0.2/MPa Elongation a/% A50 mm A 90° 180° Not less than 1200 — >0.20 ~ 0.50 2 — 0.5t — H26 H26 >0.50 ~ 1.50 130 ~ 170 105 3 — 1.0t — >1.50 ~ 4.00 4 — 1.5t — >0.20 ~ 0.50 1 — 1.0t — H18 H18 >0.50 ~ 1.50 150 130 2 — 2.0t — >1.50 ~ 3.00 2 — 3.0t — >0.20 ~ 0.50 1 — — — H19 H19 >0.50 ~ 1.50 160 140 1 — — — >1.50 ~ 3.00 1 — — — H112 H112 >6.00 ~ 12.50 85 35 16 — — — >12.50 ~ 80.00 80 30 — 16 — — F — >2.50 ~ 150.00 — — — O >0.50 ~ 3.00 ≤225 — 12 — — — >3.00 ~ 10.00 ≤235 — 12 — — — T42C >0.50 ~ 3.00 350 185 15 — — — >3.00 ~ 10.00 355 195 15 — — — T1 T42 >4.50 ~ 10.00 355 195 15 — — — >10.00 ~ 12.50 370 215 11 — — — >12.50 ~ 25.00 370 215 — 11 — — Al-clad 2A11 2A11 Normal al- clad or processed al-clad >25.00 ~ 40.00 330 195 — 8 — — >40.00 ~ 70.00 310 195 — 6 — — >70.00 ~ 80.00 285 195 — 4 — — >0.50 ~ 1.50 15 — — — T3 T3 >1.50 ~ 3.00 375 215 17 — — — >3.00 ~ 10.00 15 — — — T4 T4 >0.50 ~ 3.00 360 185 15 — — — >3.00 ~ 10.00 370 195 15 — — — F — >4.50 ~ 150.00 — — — Table 1 (continued) Designation Al-clad type Supply temper Sample temper Thickness mm Test results of tensile testing under room temperature Bend radius b Tensile strength Rm/MPa Specified non- proportional elongation strength Rp0.2/MPa Elongation a/% A50 mm A 90° 180° Not less than Al-clad 2A12 2A12 Normal al- clad or processed al-clad O >0.50 ~ 4.50 ≤215 — 14 — — — >4.50 ~ 10.00 ≤235 — 12 — — — T42c >0.50 ~ 3.00 390 245 15 — — — >3.00 ~ 10.00 410 265 12 — — — >4.50 ~ 10.00 410 265 12 — — — >10.90 ~ 12.50 420 275 7 — — — T1 T42 >12.50 ~ 25.00 420 275 — 7 — — >25.00 ~ 40.00 390 255 — 5 — — >40.00 ~ 70.00 370 245 — 4 — — ... ......

Similar standards: GB/T 3880.3-2024  GB/T 3880.1-2023  
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