GB/T 38884-2020 PDF EnglishUS$170.00 · In stock · Download in 9 seconds
GB/T 38884-2020: High temperature stainless steels for bearing Delivery: 9 seconds. True-PDF full-copy in English & invoice will be downloaded + auto-delivered via email. See step-by-step procedure Status: Valid
Similar standardsGB/T 38884-2020: High temperature stainless steels for bearing---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/GBT38884-2020GB NATIONAL STANDARD OF THE PEOPLE’S REPUBLIC OF CHINA ICS 77.140.10 H 40 High temperature stainless steels for bearing ISSUED ON: JUNE 02, 2020 IMPLEMENTED ON: DECEMBER 01, 2020 Issued by: State Administration for Market Regulation; Standardization Administration of PRC. Table of ContentsForeword ... 3 1 Scope ... 4 2 Normative references ... 4 3 Classification and code ... 6 4 Order content ... 7 5 Dimensions, appearance and weight ... 7 6 Technical requirements ... 8 7 Test method ... 13 8 Inspection rules ... 14 9 Packaging, marking and quality certificate ... 15 Appendix A (Informative) Comparison of designations between this standard, old designations, foreign designations ... 16 High temperature stainless steels for bearing1 ScopeThis standard specifies the classification and code, order content, size, shape, weight, technical requirements, test methods, inspection rules, packaging, markings and quality certificates of high temperature stainless steels for bearing. This standard applies to hot-rolled or forged round steel, cold-drawn round steel and steel wire (hereinafter referred to as steel) for the manufacture of stainless steel bearings that can withstand high temperatures of 300 °C ~ 400 °C.2 Normative referencesThe following documents are essential to the application of this document. For the dated documents, only the versions with the dates indicated are applicable to this document; for the undated documents, only the latest version (including all the amendments) are applicable to this standard. 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 223.13 Methods for chemical analysis of iron, steel and alloy - The ammonium ferrous sulfate titration method for the determination of vanadium 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 223.53 Methods for chemical analysis of iron, steel and alloy - The flame atomic absorption spectrophotometric method for the determination of copper content GB/T 223.62 Methods for chemical analysis of iron, steel and alloy - The tower sample GB/T 10561-2005 Steel - Determination of content of nonmetallic inclusions - Micrographic method using standards diagrams GB/T 11170 Stainless steel - Determination of multi-element contents - Spark discharge atomic emission spectrometric method (Routine method) GB/T 13298 Inspection methods of microstructure for metals GB/T 14979-1994 Eutectic carbide of steel - Micrographic method using Standard diagrams GB/T 15711 Inspection of non-metallic inclusions of steel - Etching test method of tower samples 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 32548 Determination of iron, tin, antimony, cerium, lead and bismuth - Inductively coupled plasma - mass spectrometric method GB/T 36026-2018 High-strength corrosion-resistant alloy bars for oil and gas engineering YB/T 4395 Steel - Determination of molybdenum, niobium and tungsten contents - Inductively coupled plasma atomic emission spectrometric method YB/T 4396 Stainless steel - Determination of multi-element contents - Inductively coupled plasma atomic emission spectrometric method3 Classification and code3.1 Steels are divided into the following two categories according to the processing methods used: a) Steel for pressure processing UP; b) Steel for cutting UC. 3.2 Steels are divided into the following two categories according to their end use: 6.12.2 The total decarburization depth on each side of the cold-drawn round steel and steel wire surface shall not be greater than 1.5% of the nominal diameter. 6.12.3 There shall be no decarburized layer on the surface of the stripped and polished steel. 6.13 Ultrasonic testing The steel shall be subjected to ultrasonic testing according to GB/T 4162-2008 one by one. It shall meet the requirements of Class A. 6.14 Surface quality 6.14.1 The surface of hot-rolled (forged) round steel shall not have cracks, folds, tears, scars, inclusions or other defects harmful to use; it shall meet the following requirements: a) For the removal depth of harmful defects on the surface of steel for pressure processing from the actual size, it shall not exceed half of the dimensional tolerance for the round steel with a nominal diameter of less than 80 mm; it shall not exceed the dimensional tolerance for the round steel with a nominal diameter of more than 80 mm; b) For the removal depth of harmful defects on the surface of steel for cutting processing from the actual size, it shall not exceed half of the dimensional tolerance for the round steel with a nominal diameter of less than 80 mm; it shall not exceed the dimensional tolerance for the round steel with a nominal diameter of more than 80 mm. 6.14.2 The surface of cold-drawn round steel shall be clean and smooth; there shall be no harmful defects such as cracks, scars, folds, rust and oxide skin. The surface is allowed to have pitting, scratches, pull marks, dark spots, concave surfaces, cleaning oblique marks, lubricant marks and individual small hairlines whose depth does not exceed half of the dimensional tolerance from the actual size. 6.14.3 There shall be no flaws, such as cracks, folds, scars, etc., on the surface of the steel wire. Individual mechanical scratches and pits are allowed. The ......Source: Above contents are excerpted from the full-copy PDF -- translated/reviewed by: www.ChineseStandard.net / Wayne Zheng et al. Tips & Frequently Asked Questions:Question 1: How long will the true-PDF of English version of GB/T 38884-2020 be delivered?Answer: The full copy PDF of English version of GB/T 38884-2020 can be downloaded in 9 seconds, and it will also be emailed to you in 9 seconds (double mechanisms to ensure the delivery reliably), with PDF-invoice.Question 2: Can I share the purchased PDF of GB/T 38884-2020_English with my colleagues?Answer: Yes. The purchased PDF of GB/T 38884-2020_English will be deemed to be sold to your employer/organization who actually paid for it, including your colleagues and your employer's intranet.Question 3: Does the price include tax/VAT?Answer: Yes. Our tax invoice, downloaded/delivered in 9 seconds, includes all tax/VAT and complies with 100+ countries' tax regulations (tax exempted in 100+ countries) -- See Avoidance of Double Taxation Agreements (DTAs): List of DTAs signed between Singapore and 100+ countriesQuestion 4: Do you accept my currency other than USD?Answer: Yes. www.ChineseStandard.us -- GB/T 38884-2020 -- Click this link and select your country/currency to pay, the exact amount in your currency will be printed on the invoice. Full PDF will also be downloaded/emailed in 9 seconds.How to buy and download a true PDF of English version of GB/T 38884-2020?A step-by-step guide to download PDF of GB/T 38884-2020_EnglishStep 1: Visit website https://www.ChineseStandard.net (Pay in USD), or https://www.ChineseStandard.us (Pay in any currencies such as Euro, KRW, JPY, AUD).Step 2: Search keyword "GB/T 38884-2020". Step 3: Click "Add to Cart". If multiple PDFs are required, repeat steps 2 and 3 to add up to 12 PDFs to cart. Step 4: Select payment option (Via payment agents Stripe or PayPal). Step 5: Customize Tax Invoice -- Fill up your email etc. Step 6: Click "Checkout". Step 7: Make payment by credit card, PayPal, Google Pay etc. After the payment is completed and in 9 seconds, you will receive 2 emails attached with the purchased PDFs and PDF-invoice, respectively. Step 8: Optional -- Go to download PDF. Step 9: Optional -- Click Open/Download PDF to download PDFs and invoice. See screenshots for above steps: Steps 1~3 Steps 4~6 Step 7 Step 8 Step 9 |
