Standard No.:	GB/T 3278-2023
English Name:	Hot-rolled steel plates, sheets and strips for tools
Chinese Name:	工具用热轧钢板和钢带
Chinese Classification:	H46    Steel sheet and strip
Professional Classification:	GB    National Standard
Source Content Issued by:	SAMR; SAC
Issued on:	2023-9-7
Implemented on:	2024-4-1
Status:	valid
Superseding:	GB/T 3278-2001 Hot-rolled carbon tool steel sheets and plates
Target Language:	English
File Format:	PDF
Word Count:	7500 words
Translation Price(USD):	240.0
Delivery:	via email in 1 business day

GB/T 3278-2023 Hot-rolled steel plates, sheets and strips for tools 1 Scope This document specifies the classification and codes, ordering information, dimensions, shape and weight, technical requirements, test methods, inspection rules, packaging, marking and quality certification of hot-rolled steel plates, sheets and strips for tools. This document is applicable to hot-rolled steel plates, sheets and strips for tools with a nominal thickness of not greater than 25mm (hereinafter referred to as "steel plates, sheets and strips"). 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 223.11 Iron, steel and alloy - Determination of chromium content - Visual titration or potentiometric titration method GB/T 223.14 Methods for chemical analysis of iron, steel and alloy - The N-benzoyl-N-phenylhydroxylamine extraction photometric method for the determination of vanadium content GB/T 223.19 Methods for chemical analysis of iron, steel and alloy - The neocuproine-chloroform extraction photometric method for the determination of copper content GB/T 223.23 Iron, steel and alloy - Determination of nickel content - The dimethylglyoxime spectrophotometric method GB/T 223.26 Iron, steel and alloy - Determination of molybdenum content - The thiocyanate spectrophotometric method GB/T 223.62 Methods for chemical analysis of iron, steel and alloy - The butyl acetate extraction photometric method for the determination of phosphorus content GB/T 223.63 Iron, steel and alloy - Determination of manganese content - Sodium (potassium) periodate spectrophotometric method GB/T 223.68 Methods for chemical analysis of iron, steel and alloy - The potassium iodate titration method after combustion in the pipe furnace for the determination of sulfur content GB/T 223.69 Iron, steel and alloy - Determination of carbon contents - Gas-volumetric method after combustion in the pipe furnace GB/T 224 Determination of depth of decarburization of steel GB/T 230.1 Metallic materials - Rockwell hardness test - Part 1: Test method GB/T 231.1 Metallic materials - Brinell hardness test - Part 1: Test method GB/T 247 General rule of package, mark and certification for steel plates (sheets) and strips GB/T 709-2019 Dimension, shape, weight and tolerances for hot-rolled steel plates and sheets GB/T 1299-2014 Tool and mould steels GB/T 4336 Carbon and low-alloy steel - Determination of multi-element contents - Spark discharge atomic emission spectrometric method (routine method) GB/T 8170 Rules of rounding off for numerical values & expression and judgment of limiting values GB/T 10561-2023 Steel - Determination of content of nonmetallic inclusions - Micrographic method using standards diagrams GB/T 13298 Inspection methods of microstructure for metals GB/T 13302 Steel - Determination of area content of graphite - Micrographic method using diagrams GB/T 17505 Steel and steel products - General technical delivery requirements GB/T 20066 Steel and iron - Sampling and preparation of samples for the determination of chemical composition GB/T 20123 Steel and iron - Determination of total carbon and sulfur content - Infrared absorption method after combustion in an induction furnace (routine method) GB/T 20125 Low-alloy steel - Determination of multi-element contents - Inductively coupled plasma atomic emission spectrometric method 3 Terms and definitions No terms and definitions are listed in this document. 4 Classifications and codes 4.1 According to the edge conditions, steel plates, sheets and strips are classified as follows: a) Trimmed: EC; b) Untrimmed: EM. 4.2 According to the thickness accuracy, continuously rolled steel plates, sheets and strips are classified as follows: a) ordinary thickness accuracy, PT.A; b) superior thickness accuracy, PT.B.

Contents Foreword II 1 Scope 2 Normative references 3 Terms and definitions 4 Classifications and codes 5 Order information 6 Dimensions, shape and weight 7 Technical requirements 8 Test methods 9 Inspection rules 10 Packaging, marking and quality certificate Annex A (Nominative) Dimension, shape and tolerances for steel strips with a nominal width less than 600mm Annex B (Informative) Comparison table of designations in this document with those in domestic and international documents Bibliography