Standard No.:	GB/T 20887.1-2017
English Name:	Continuously hot rolled high strength steel sheet and strip for automobile--Part 1: High yield strength steel for cold forming
Chinese Name:	汽车用高强度热连轧钢板及钢带 第1部分：冷成形用高屈服强度钢
Chinese Classification:	H46    Steel sheet and strip
Professional Classification:	GB    National Standard
ICS Classification:	77.140.50 77.140.50    Flat steel products and semi-products 77.140.50
Issued by:	AQSIQ; SAC
Issued on:	2017-09-07
Implemented on:	2018-6-1
Status:	valid
Superseding:	GB/T 20887.1-2007 Continuously hot rolled high strength steel sheet and strip for automobile—Part 1:High yield strength steel for cold forming
Language:	English
File Format:	PDF
Word Count:	5500 words
Price(USD):	130.0
Delivery:	via email in 1 business day

1 Scope This part of GB/T 20887 specifies the classification and designation expression method, contents of purchase, dimensions, shapes, weight, technical requirements, test methods, inspection rules as well as packaging, marking and quality certificate of hot rolled high yield strength steel sheet and strip for cold forming. This part is applicable to continuously hot rolled high yield strength steel strip for cold forming as well as steel sheet obtained by cutting the steel strip transversely and longitudinal strip obtained by cutting the steel strip longitudinally (hereinafter referred to as "steel sheet and strip"). 2 Normative References The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. GB/T 222 Permissible Tolerances for Chemical Composition of Steel Products GB/T 223.5 Steel and Iron - Determination of Acid-soluble Silicon and Total Silicon Content - Reduced Molybdosilicate Spectrophotometric Method GB/T 223.9 Iron Steel and Alloy - Determination of Aluminum Content - Chrom Azurol S Photometric Method GB/T 223.17 Methods for Chemical Analysis of Iron Steel and Alloy - the Diantipyrylmethane Photometric Method for the Determination of Titanium Content GB/T 223.26 Iron Steel and Alloy - Determination of Molybdenum Content - the Thiocyanate Spectrophotometric Method GB/T 223.40 Iron Steel and Alloy - Determination of Niobium Content by the Sulphochlorophenol S Spectrophotometric Method GB/T 223.58 Methods for Chemical Analysis of Iron, Steel and Alloy - the Sodium Arsenite-Sodium Nitrite Titrimetric Method for the Determination of Manganese Content GB/T 223.59 Iron Steel and Alloy - Determination of Phosphorus Content - Bismuth Phosphomolybdate Blue Spectrophotometric Method and Antimony Phosphomolybdate Blue Spectrophotometric Method GB/T 223.67 Iron Steel and Alloy - Determination of Sulfur Content - Methylene Blue Spectrophotometric Method GB/T 223.76 Methods for Chemical Analysis of Iron, Steel and Alloy - the Flame Atomic Absorption Spectrometric Method for the Determination of Vanadium Content GB/T 223.78 Methods for Chemical Analysis of Iron, Steel and Alloy - Curcumin Spectrophotometric Method for the Determination of Boron Content GB/T 223.86 Steel and Iron - Determination of Total Carbon Content - Infrared Absorption Method after Combustion in an Induction Furnace GB/T 228.1-2010 Metallic Materials - Tensile Testing - Part 1: Method of Test at Room Temperature GB/T 229 Metallic Materials - Charpy Pendulum Impact Test Method GB/T 232 Metallic Materials - Bend Test GB/T 247 General Rule of Package Mark and Certification for Steel Plates (Sheets) and Strips

Foreword i 1 Scope 2 Normative References 3 Classification and Designation Expression Method 4 Contents of Purchase 5 Dimensions, Shapes and Weight 6 Technical Requirements 7 Test Methods 8 Inspection Rules 9 Packaging, Marking and Quality Certificate Annex A (Informative) Similarity Comparison of the Designations at Home and Abroad Annex B (Informative) Recommended Minimum Bend Radius for Cold Forming