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Position: Chinese Standard in English/GB/T 230.1-2018
GB/T 230.1-2018   Metallic materials—Rockwell hardness test—Part 1:Test method (English Version)
Standard No.: GB/T 230.1-2018 Status:valid remind me the status change

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Standard No.: GB/T 230.1-2018
English Name: Metallic materials—Rockwell hardness test—Part 1:Test method
Chinese Name: 金属材料 洛氏硬度试验 第1部分: 试验方法
Chinese Classification: H22    Metal mechanical property test method
Professional Classification: GB    National Standard
ICS Classification: 77.040.10 77.040.10    Mechanical testing of metals 77.040.10
Issued by: SAIC AND SAC
Issued on: 2018-05-14
Implemented on: 2018-12-1
Status: valid
Superseding:GB/T 230.1-2009 Metallic materials - Rockwell hardness test - Part 1: Test method(scales A, B, C, D, E, F, G, H, K, N, T)
Language: English
File Format: PDF
Word Count: 14500 words
Price(USD): 410.0
Delivery: via email in 1 business day
1 Scope This part of GB/T 230 specifies the method for Rockwell regular and Rockwell superficial hardness tests for metallic materials with scales of A, B, C, D, E, F, G, H, K, 15N, 30N, 45N, 15T, 30T, and 45T. It is applicable to stationary and portable hardness testing machines. For specific materials or products, other specific standards apply (for instance, GB/T 3849.1[1], GB/T 9097[2]). Note: Attention is drawn to the fact that the use of tungsten carbide composite for ball indenters is considered to be the standard type of Rockwell indenter ball. Steel indenter balls are allowed to continue to be used only when complying with Annex A. 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 230.2-2012 Metallic materials - Rockwell hardness test - Part 2: Verification and calibration of testing machines (Scales A, B, C, D, E, F, G, H, K, N, T) (GB/T 230.2-2012, ISO 6508-2: 2005, MOD) GB/T 230.3 Metallic materials - Rockwell hardness test - Part 3: Calibration of reference blocks (Scales A, B, C, D, E, F, G, H, K, N, T) (GB/T 230.3-2012, ISO 6508-3: 2005, MOD) JJG 112 Metallic Rockwell hardness testers (scales A, B, C, D, E, F, G, H, K, N, T) JJF 1059.1 Evaluation and expression of uncertainty in measurement 3 Principle An indenter of specified size, shape, and material is forced into the surface of a test specimen under two force levels using the specific conditions defined in Clause 7. The specified preliminary force is applied and the initial indentation depth is measured, followed by the application and removal of a specified additional force, returning to the preliminary force. The final indentation depth is then measured and the Rockwell hardness value is derived from the difference, h, in the final and initial indentation depths and the two constants N and S (see Figure 1, Table 1, and Table 2) as shown in Formula
Foreword i 1 Scope 2 Normative references 3 Principle 4 Symbols, abbreviated terms and designations 5 Testing machine 6 Test piece 8 Uncertainty of the results 9 Test report 10 Conversions to other hardness scales or tensile strength values Annex A (Normative) Special HR30TSm and HR15TSm test for thin products Annex B (Normative) Minimum thickness of the test piece in relation to the Rockwell hardness Annex C (Normative) Daily verification procedure Annex D (Normative) Inspection of diamond indenters Annex E (Normative) Corrections to be added to Rockwell hardness values obtained on convex cylindrical surfaces Annex F (Normative) Corrections to be added to Rockwell hardness C scale values obtained on convex spherical test surfaces Annex G (Informative) Uncertainty of the measured hardness values Bibliography
Referred in GB/T 230.1-2018:
*GB/T 230.2-2012 Metallic materials—Rockwell hardness test—Part 2:Verification and calibration of testing machines
*GB/T 230.3-2012 Metallic materials - Rockwell hardness test - Part 3:Calibration of reference blocks(scales A,B,C,D,E,F,G,H,K,N,T)
*JJG 112-2013 Metallic Rockwell Hardness Testing Machines(Scales A,B,C,D,E,F,G,H,K,N,T)
*JJF 1059.1-2012 Evaluation and Expression of Uncertaintv in Measurement
GB/T 230.1-2018 is referred in:
*GB/T 3098.22-2009 Mechanical properties of fasteners made of the fine grain non-heat treatment steel—Bolts,screws and studs
*GB/T 24593-2018 Welded austenitic stainless steel tubes for boiler and heat exchanger
*JG/T 163-2013 Couplers for rebar mechanical splicing
*GB/T 34882-2017 Induction hardening and tempering of iron and steel parts
*GB/T 30827-2014 Technical conditions for external prestressing tendons
*GB/T 3098.2-2015 Mechanical properties of fasteners—Nuts
*GB/T 5099.1-2017 Seamless steel gas cylinders―Part 1:Quenched and tempered steel cylinders with tensile strengthless than 1 100 MPa
*YB/T 091-2005 Forging(rolling) steel grinding balls
*GB/T 21839-2019 Test methods of steel for prestressing concrete
*GB 11640-2011 Seamless aluminum alloy gas cylinders
*JB/T 6374-2006 Specification for silicon carbide rings of mechanical seal
*NB/T 47007-2018 Air-cooled heat exchangers
*GB/T 4679-2017 Diecasting dies--Components--Specifications
*JT/T 329-2010 Prestressing strand anchorage,grip and coupler for highway bridge
*GB/T 2520-2017 Cold-reduced electrolytic tinplate [Steel-plate & steel-strip]
*TB/T 3193-2016 Anchorage,grip and coupler for prestressing tendons in railway construction
*GB/T 4423-2020 Copper and copper alloy cold-drawn rod and bar
*GB/T 28011-2021 Shanks for footwear
*GB/T 11640-2021 Seamless aluminum alloy gas cylinders
*GB/T 34484.2-2018 Heat-treatable steels—Part 2:Alloy steels for quenching and tempering
*GB/T 2529-2012 Copper sheets and bars for electrical conduction purpose
*JB/T 8415-2011 Internal combustion engines — Timing gears — Specifications
*GB 28011-2011/XG1-2015 Shanks for footwear (including Amendment 1)
*GB/T 2059-2008 Strip of copper and copper alloy
*GB 6675.2-2014/XG1-2022 Safety of toys―Part 2:Mechanical and physical properties, includes Amendment 1
*GB/T 41857-2022 Sheet metal parts fabricated by fine blanking combined with extrusion process—General specification
*GB/T 4440-2022 Adjustable wrenches
*GB/T 32541-2016 Quality control system for heat treatment
*GB/T 12143-2008 General analytical methods for beverage
*GB/T 5156-2022 Magnesium and magnesium alloy extruded profiles
Code of China
Standard
GB/T 230.1-2018  Metallic materials—Rockwell hardness test—Part 1:Test method (English Version)
Standard No.GB/T 230.1-2018
Statusvalid
LanguageEnglish
File FormatPDF
Word Count14500 words
Price(USD)410.0
Implemented on2018-12-1
Deliveryvia email in 1 business day
Detail of GB/T 230.1-2018
Standard No.
GB/T 230.1-2018
English Name
Metallic materials—Rockwell hardness test—Part 1:Test method
Chinese Name
金属材料 洛氏硬度试验 第1部分: 试验方法
Chinese Classification
H22
Professional Classification
GB
ICS Classification
Issued by
SAIC AND SAC
Issued on
2018-05-14
Implemented on
2018-12-1
Status
valid
Superseded by
Superseded on
Abolished on
Superseding
GB/T 230.1-2009 Metallic materials - Rockwell hardness test - Part 1: Test method(scales A, B, C, D, E, F, G, H, K, N, T)
Language
English
File Format
PDF
Word Count
14500 words
Price(USD)
410.0
Keywords
GB/T 230.1-2018, GB 230.1-2018, GBT 230.1-2018, GB/T230.1-2018, GB/T 230.1, GB/T230.1, GB230.1-2018, GB 230.1, GB230.1, GBT230.1-2018, GBT 230.1, GBT230.1
Introduction of GB/T 230.1-2018
1 Scope This part of GB/T 230 specifies the method for Rockwell regular and Rockwell superficial hardness tests for metallic materials with scales of A, B, C, D, E, F, G, H, K, 15N, 30N, 45N, 15T, 30T, and 45T. It is applicable to stationary and portable hardness testing machines. For specific materials or products, other specific standards apply (for instance, GB/T 3849.1[1], GB/T 9097[2]). Note: Attention is drawn to the fact that the use of tungsten carbide composite for ball indenters is considered to be the standard type of Rockwell indenter ball. Steel indenter balls are allowed to continue to be used only when complying with Annex A. 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 230.2-2012 Metallic materials - Rockwell hardness test - Part 2: Verification and calibration of testing machines (Scales A, B, C, D, E, F, G, H, K, N, T) (GB/T 230.2-2012, ISO 6508-2: 2005, MOD) GB/T 230.3 Metallic materials - Rockwell hardness test - Part 3: Calibration of reference blocks (Scales A, B, C, D, E, F, G, H, K, N, T) (GB/T 230.3-2012, ISO 6508-3: 2005, MOD) JJG 112 Metallic Rockwell hardness testers (scales A, B, C, D, E, F, G, H, K, N, T) JJF 1059.1 Evaluation and expression of uncertainty in measurement 3 Principle An indenter of specified size, shape, and material is forced into the surface of a test specimen under two force levels using the specific conditions defined in Clause 7. The specified preliminary force is applied and the initial indentation depth is measured, followed by the application and removal of a specified additional force, returning to the preliminary force. The final indentation depth is then measured and the Rockwell hardness value is derived from the difference, h, in the final and initial indentation depths and the two constants N and S (see Figure 1, Table 1, and Table 2) as shown in Formula
Contents of GB/T 230.1-2018
Foreword i 1 Scope 2 Normative references 3 Principle 4 Symbols, abbreviated terms and designations 5 Testing machine 6 Test piece 8 Uncertainty of the results 9 Test report 10 Conversions to other hardness scales or tensile strength values Annex A (Normative) Special HR30TSm and HR15TSm test for thin products Annex B (Normative) Minimum thickness of the test piece in relation to the Rockwell hardness Annex C (Normative) Daily verification procedure Annex D (Normative) Inspection of diamond indenters Annex E (Normative) Corrections to be added to Rockwell hardness values obtained on convex cylindrical surfaces Annex F (Normative) Corrections to be added to Rockwell hardness C scale values obtained on convex spherical test surfaces Annex G (Informative) Uncertainty of the measured hardness values Bibliography
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Keywords:
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