GB/T 24186-2022 PDF EnglishUS$230.00 · In stock · Download in 9 seconds
GB/T 24186-2022: High strength abrasion resistant steel plate, sheet and strip for construction machine Delivery: 9 seconds. True-PDF full-copy in English & invoice will be downloaded + auto-delivered via email. See step-by-step procedure Status: Valid GB/T 24186: Historical versions
Similar standardsGB/T 24186-2022: High strength abrasion resistant steel plate, sheet and strip for construction machine---This is an excerpt. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.), auto-downloaded/delivered in 9 seconds, can be purchased online: https://www.ChineseStandard.net/PDF.aspx/GBT24186-2022 GB NATIONAL STANDARD OF THE PEOPLE’S REPUBLIC OF CHINA ICS 77.140.50 CCS H 46 Replacing GB/T 24186-2009 High strength abrasion resistant steel plate, sheet and strip for construction machine Issued on. OCTOBER 12, 2022 Implemented on. MAY 01, 2023 Issued by. State Administration for Market Regulation; Standardization Administration of the People's Republic of China. Table of ContentsForeword... 3 1 Scope... 5 2 Normative references... 5 3 Terms and definitions... 7 4 Designation representation method... 7 5 Ordering content... 7 6 Size, shape, weight... 8 7 Technical requirements... 9 8 Test methods... 14 9 Inspection rules... 14 10 Packaging, marks and quality certificate... 15 Annex A (informative) Chemical composition of TiC reinforced steel... 161 ScopeThis document specifies the designation representation method, ordering content, size, shape, weight, technical requirements, test methods, inspection rules, packaging, marks and quality certificates for high strength abrasion resistant steel plate, sheet and strip for construction machine. This document applies to single-rolled steel plates with a thickness not greater than 120mm, steel sheets and strips and sheared steel plates with a thickness not greater than 25.4mm (hereinafter referred to as "steel plates, sheets and strips") for abrasion- resistant structural components of engineering machinery such as mining machinery, construction machinery and agriculture machinery. This document can be used as reference for the abrasion-resistant steel plates, sheets and strips used in other fields.2 Normative referencesThe 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 223.3, Methods for chemical analysis of iron, steel and alloy. The diantipyryl methane phosphomolybdate gravimetric method for the determination of phosphorus content GB/T 223.9, Iron, steel and alloy - Determination of aluminium content - Chrome azurol S photometric method GB/T 223.11, Iron, steel and alloy - Determination of chromium content - Visual titration or potentiometric titration 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 223.23, 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 223.60, Methods for chemical analysis of iron, steel and alloy - The perchloric acid dehydration gravimetric method for the determination of silicon 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 content3 Terms and definitionsThis document does not have terms and definitions that need to be defined.4 Designation representation methodThe designation of steel consists of two parts. the first letter of the Chinese pinyin "NM" for "abrasion resistant" and the specified surface Brinell hardness value.5 Ordering contentThe contract or order for ordering according to this document shall include the following contents.6 Size, shape, weight6.1 The thickness range of each designation shall comply with the provisions in Table 1. 6.2 The size, shape, weight and allowable deviation of steel plates, sheets and strips shall comply with the provisions of GB/T 709-2019.The thickness tolerance of continuous rolling steel plates shall be in accordance with the provisions in Table 4 of GB/T 709-2019. 6.3 The roughness of single-rolled steel plates can be according to category H of GB/T 709-2019.7 Technical requirements7.1 Designation and chemical composition 7.1.1 The designation and chemical composition (smelting analysis) of the steel shall comply with the provisions in Table 2 or Table 3. 7.1.2 Under the premise of ensuring the properties of the steel, the Cr, Ni, and Mo alloying elements specified in Table 2 and Table 3 can be added alone or in combination. Other alloying elements other than those specified in Table 2 and Table 3 can also be 7.1.3 When Cu is used as a residual element in steel, its content shall not exceed 0.30%. The As content shall not exceed 0.08%. If the supplier can guarantee it, no analysis is required. 7.1.4 The carbon equivalent of steels that require low temperature toughness shall meet the requirements in Table 3.See formula (1) for carbon equivalent calculation. 7.1.5 When the total aluminum (Alt) content is used for calculation, the Alt content shall not be less than 0.015%. 7.1.6 Agreed by the supplier and the purchaser and indicated in the contract, see Annex A for the chemical composition of the TiC reinforced steel. 7.1.7 When the purchaser requires analysis of the chemical composition of the finished product, the allowable deviation of the chemical composition of the finished product shall comply with the provisions of GB/T 222. 7.2 Smelting method Steel is smelted by converter or electric furnace. Carry out the refining outside the furnace. 7.3 Delivery condition The steel is delivered in the condition of quenching, quenching + tempering, TMCP + tempering, or in the condition of hot rolling (steel in the condition of hot rolling before heat treatment). 7.4 Mechanical and process properties 7.4.1 Hardness test The surface Brinell hardness of steel plates, sheets and strips shall meet the requirements in Table 4.When the purchaser has requirements for the Brinell hardness of the center of the section, the requirements in Table 4 can be referred to after negotiation between the supplier and the purchaser. 7.4.2 Charpy (V-notch) impact test 7.4.2.1 The Charpy (V-notch) impact test of steel plates, sheets and strips that require low-temperature toughness shall comply with the provisions in Table 5. 7.4.2.2 The Charpy (V-notch) impact absorbed energy is calculated as the arithmetic mean of three specimens. One of the specimen values is allowed to be lower than the 7.4.3 Tensile test Agreed by the supplier and the purchaser and indicated in the contract, the transverse tensile test can be carried out for steel plates, sheets and strips with a thickness not greater than 80mm. The test results can refer to the regulations in Table 6. 7.4.4 Bending test Agreed by the supplier and the purchaser and indicated in the contract, the bending test can be carried out on steel plates, sheets and strips that require bending. The test results shall meet the requirements in Table 7. 7.4.5 The mechanical and technological properties of TiC reinforced steel plates, sheets and strips can be determined through negotiation between the supplier and the purchaser. 7.4.6 Steel plates, sheets and strips delivered in hot-rolled condition are not subjected to the mechanical property test. If the purchaser has special requirements, both parties can negotiate. 7.5 Surface quality 7.5.1 There shall be no defects such as cracks, bubbles, scars, folds and inclusions on the surface of steel plates, sheets and strips. There shall be no visible delamination. If there are surface defects above, it is allowed to clean. The cleaning depth is calculated from the actual size of the steel plate. 7.5.3 Steel plates, sheets and strips shall not be repaired by welding. 7.5.4 Agreed by the supplier and the purchaser and indicated in the contract, the surface quality of steel plates, sheets and strips can meet the requirements of GB/T 14977. 7.6 Non-destructive testing Agreed by the supplier and the purchaser and indicated in the contract, the internal quality of steel plates, sheets and strips can be inspected by non-destructive testing methods. The testing standards and qualification levels shall be specified in the contract.8 Test methods8.1 The chemical composition test method of steel shall be carried out according to GB/T 4336, GB/T 20123, GB/T 20125 or other common test methods. Arbitration is according to GB/T 223.3, GB/T 223.9, GB/T 223.11, GB/T 223.17, GB/T 223.23, GB/T 223.26, GB/T 223.60, GB/T 223.63, GB/T 223.68, GB/T 223.69, GB/T 223.78, GB/T 223.79. 8.2 For surface Brinell hardness specimens, a reasonable method shall be used to remove the decarburized layer. 8.3 The inspection items, sampling quantity, sampling method and test method of steel plates, sheets and strips shall comply with the provisions in Table 8.9 Inspection rules9.1 Steel plates, sheets and strips shall be accepted in batches. Each batch consists of steel plates, sheets and strips with the same designation, same furnace number, same thickness, same delivery condition, and same heat treatment system. 9.2 The sampling quantity and sampling method of steel plates, sheets and strips shall comply with the provisions in Table 8. 9.3 The re-inspection and determination rules of inspection items for steel plates, sheets and strips shall comply with the provisions of GB/T 17505. 9.4 The test results of chemical composition and mechanical properties are compared according to the numerical rounding value. The rounding rules shall comply with the provisions of GB/T 8170.10 Packaging, marks and quality certificateThe packaging, marks and quality certificates of steel plates, sheets and strips shall comply with the provisions of GB/T 247. ......Source: Above contents are excerpted from the full-copy PDF -- translated/reviewed by: www.ChineseStandard.net / Wayne Zheng et al. 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