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GB/T 1732-2020   Determination of impact resistance of coating films (English Version)
Standard No.: GB/T 1732-2020 Status:valid remind me the status change

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Standard No.: GB/T 1732-2020
English Name: Determination of impact resistance of coating films
Chinese Name: 漆膜耐冲击测定法
Chinese Classification: G50    Basic standard and general method for coating
Professional Classification: GB    National Standard
Issued by: SAMR; SAC
Issued on: 2020-11-19
Implemented on: 2021-10-1
Status: valid
Superseding:GB/T 1732-1993 Determination of impact resistance of film
Language: English
File Format: PDF
Word Count: 3500 words
Price(USD): 105.0
Delivery: via email in 1 business day
Codeofchina.com is in charge of this English translation. In case of any doubt about the English translation, the Chinese original shall be considered authoritative. This standard is developed in accordance with the rules given in GB/T 1.1-2009. This standard replaces GB/T 1732-1993 Determination of impact resistance of film. In addition to editorial changes, the following main technical changes have been made with respect to GB/T 1732-1993: ——In normative references, GB 308, GB 708, GB 1727 and GB 1764 are deleted; GB/T 308.1-2013, GB/T 9278, GB/T 13452.2, GB/T 20777 and GB/T 37356 are added (see Clause 2; Clause 2 of Edition 1993); ——The clause “Principle” and clause “Expression of results” are added (see Clause 3 and Clause 8); ——The regulations on punch and steel ball of impact tester are modified (see 4.1; 3.2.2 of Edition 1993); ——The correction method of impact tester is deleted (see 3.4 of Edition 1993); ——The substrate dimension is modified (see 6.1; 5.1 of Edition 1993); ——The distances between the edge of the impact point and the edge of the test panel as well as the edge of adjacent impact points are modified (see 7.3, 6.2 of Edition 1993); ——The requirements for adjusting the height interval of hammer and the lighting conditions for observation of results are added (see 7.3); ——The test report is modified (see Clause 9; Clause 7 of Edition 1993); This standard was proposed by China Petroleum and Chemical Industry Association. This standard is under the jurisdiction of National Technical Committee 5 on Paints & Pigments of Standardization Administration of China (SAC/TC 5). The previous editions of this standard are as follows: ——GB 1732-1979 and GB/T 1732-1993. Determination of impact resistance of coating films 1 Scope This standard specifies the test method for determining the impact resistance of coating films by the maximum height (in cm) of the hammer of a fixed mass falling on the punch without causing any coating film damage when the punch hits the test panel. This standard is applicable to the determination of impact resistance performance of coating films. 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 (including any amendments) applies. GB/T 308.1-2013 Rolling bearings - Balls - Part 1: Steel balls GB/T 3186 Paints, varnishes and raw materials for paints and varnishes - Sampling GB/T 9271 Paints and varnishes - Standard panels for testing GB/T 9278 Temperatures and humidities for conditioning and testing of paint specimens GB/T 13452.2 Paints and varnishes - Determination of film thickness GB/T 20777 Paints and varnishes - Examination and preparation of samples for testing GB/T 37356 Paints and varnishes - Lighting and procedure for visual assessments of coatings 3 Principle Coat the sample under test to applicable metal substrate, and after curing, drop a hammer of fixed mass from a certain height to impact the punch, so that the coating film and substrate are deformed. It may be forward punching (with coating film upwards) or backward punching (with coating film downwards). By gradually increasing the falling height of the hammer, the numerical points where the coating film is liable to damage are determined.   4 Instruments and equipment 4.1 Impact tester The maximum scale of the guide tube is (50.0±0.1)cm with graduation of 1cm, and the weight of the hammer is (1,000±1)g, which may move freely in the guide tube. The steel ball on the punch has a diameter of (8.000±0.015)mm and a hardness (HRC) of 61 ~ 66, which shall meet the requirements of GB/T 308.1-2013. The center of the impact is aligned with that of die groove with the depth of punch into the groove of (2.0±0.1)mm; the die groove whose diameter is (15.0±0.3)mm shall be smooth; the radius of curvature of groove edge is 2.5mm~3.0mm. The impact tester is shown in Figure 1. Key: 1——guide tube 2——hammer controller 3——graduation line 4——punch guide groove 5——die 6——base 7——support 8——punch 9——guide tube 10——hammer Figure 1 Schematic diagram of impact tester 4.2 Magnifier 4X magnifier. 5 Sample Take a representative sample of the product under test (or each product in the case of a multi-coat system) as described in GB/T 3186. Examine and prepare each sample for testing, as described in GB/T 20777. 6 Test panels 6.1 Substrate Unless otherwise specified, the substrate is tinplate or steel plate, which shall meet the technical requirements of GB/T 9271, and whose dimension shall be 120mm× 50mm× (0.20mm ~ 0.30mm) and 150mm×70mm×(0.45mm~0.55mm) respectively. 6.2 Treatment of substrate and coating of test panel Unless otherwise specified, treat each test substrate in accordance with GB/T 9271 and then coat the product or system under test by the specified method. 6.3 Drying and conditioning Dry (or stove) and cure each coated test panel for the specified time under the specified conditions. Test panels that are not cured under the conditions specified in GB/T 9278, when drying, shall be conditioned for at least 16h under the conditions specified in GB/T 9278 before testing. 6.4 Thickness of coating film The thickness of coating films shall be specified or agreed. The thickness of coating films shall be determined according to one of the determination methods for dry film thickness specified in GB/T 13452.2 and expressed in micrometers (μm).
Foreword i 1 Scope 2 Normative references 3 Principle 4 Instruments and equipment 5 Sample 6 Test panels 7 Test procedures 8 Expression of results 9 Test report
Referred in GB/T 1732-2020:
*GB/T 308.1-2013 Rolling bearings—Balls—Part 1:Steel balls
*GB/T 3186-2006 Paints varnishes and raw materials for paints and varnishes - Sampling
*GB/T 9271-2008 Paints and varnishes standard panels for testing
*GB/T 9278-2008 Temperatures and humidities for conditioning and testing of paint specimens
*GB/T 13452.2-2008 Paints and varnishes - Determination of film thickness
*GB/T 20777-2006 Paints and varnishes - Examination and prepration of samples for testing
*GB/T 37356-2019 Paints and varnishes—Lighting and procedure for visual assessments of coatings
*GB/T 95-2002 Plain washers - Product grade C
*GB/T 2664-2009 Mens suits and coats
*GB 4706.1-2005 Household and Similar Electrical Appliances – Safety - Part 1: General Requirements
*GB 17625.1-2022 Electromagnetic compatibility—Limits—Part 1: Limits for harmonic current emissions (equipment input current ≤ 16A per phase)
*GB/T 14048.5-2017 Low-voltage switchgear and controlgear-Part 5-1:Control circuit devices and switching element-Electromechanical control circuit devices
*GB 17625.1-2022 Electromagnetic compatibility—Limits—Part 1: Limits for harmonic current emissions (equipment input current ≤ 16A per phase)
*QB/T 1333-2018 Handbag and Knapsack
*GB 2762-2022 National Food Safety Standard - Maximum Levels of Contaminants in Foods
*GB/T 22849-2014 Knitted T-shirt
*GB 5749-2022 Standards for drinking water quality
*GB 14748-2006 Safety Requirements for Wheeled Child Conveyances
*GB/T 1591-2018 High strength low alloy structural steels
*GB 4943.1-2011 Information technology equipment -Safety - Part 1: General requirements
*GB 2763-2021 National Food Safety Standard-Maximum Residue Limits for Pesticides in Food
GB/T 1732-2020 is referred in:
*GB/T 17713-2011 Range hood
*GB/T 5237.5-2017 Wrought aluminium alloy extruded profiles for architecture - Part 5: Paint coating profiles
*GB/T 5237.4-2017 Wrought aluminium alloy extruded profiles for architecture - Part 4:Powder coating profiles
*GB/T 3325-2008 Metal furniture - General technical requirements
*GB/T 41899-2022 General quality requirements for coated tinplate and ECCS used in food container
*GB 12441-2005 Finishing fire retardant paint
*T/CNCIA 01001-2016 High solid solvent borne automotive coatings
*QB/T 1097-2010 Stell filing cabinet
*GB/T 13668-2015 General technical requirements for steel book cabinets and information cabinets
*GB 12441-2018 Finishing fire resistant coating
*GB/T 14531-2017 Office furniture—Tables, chairs and stools for reading
*GB/T 50393-2017 Technical standard for anti一corrosion engineering of steel petroleum storage tanks
*GB/T 3325-2017 General technical requirements for metal furniture
*GB/T 33630-2017 Offshore wind turbine generator systems―Specification for corrosion protection
*GB/T 33505-2017 Escalator steps and moving walk pallets
*CJ/T 120-2008 Coating plastic steel pipe for water supply
*DB13/T 1481-2011
*GB 5599-1985 Railway vehicles; Specification for evaluation the dynamic performance and accreditation test
*DB62/T 2239-2012
*DB11/Z 370-2006
*DB12/ 356-2008
*DB50/ 418-2012
*DB14/T 534-2009
*DB14/T 533-2009
*DB14/T 575-2010
*DB32/T 1553-2009
*GB 6011-1985 Test method for flammability characteristics of fiber-reinforced plastics; Incandescent rod method
*GB/T 5142-1985 Reach and straddle fork lift trucks; Stability tests
*GB/T 3452.3-1988 Fluid power systems-O-Ring-Design criteria for O-Ring housing-Basic calculation
*GB/T 33282-2016 General technical requirements for indoor stone furniture
*GB/T 28699-2012 Steel structure protection general requirements of coatings
*GB/T 24977-2024 General technical requirements for bathroom furniture
*QB/T 1952.1-2023 Upholstered furniture Sofa
*GB/T 24821-2024 Dining tables and chairs
*GB/T 17748-2008 Aluminium-plastic Composite Panel for Curtain Wall
*GB/T 3325-2024 General technical requirements for metal furniture
*JTS 153-2015 Standard for Durability Design of Port and Waterway Engineering Structure
*GB/T 33383-2024 Corrosion control technology of modified polyvinyl chloride structural adhesive and cement
*GB/T 23443-2024 Aluminium panels for building decoration
Code of China
Standard
GB/T 1732-2020  Determination of impact resistance of coating films (English Version)
Standard No.GB/T 1732-2020
Statusvalid
LanguageEnglish
File FormatPDF
Word Count3500 words
Price(USD)105.0
Implemented on2021-10-1
Deliveryvia email in 1 business day
Detail of GB/T 1732-2020
Standard No.
GB/T 1732-2020
English Name
Determination of impact resistance of coating films
Chinese Name
漆膜耐冲击测定法
Chinese Classification
G50
Professional Classification
GB
ICS Classification
Issued by
SAMR; SAC
Issued on
2020-11-19
Implemented on
2021-10-1
Status
valid
Superseded by
Superseded on
Abolished on
Superseding
GB/T 1732-1993 Determination of impact resistance of film
Language
English
File Format
PDF
Word Count
3500 words
Price(USD)
105.0
Keywords
GB/T 1732-2020, GB 1732-2020, GBT 1732-2020, GB/T1732-2020, GB/T 1732, GB/T1732, GB1732-2020, GB 1732, GB1732, GBT1732-2020, GBT 1732, GBT1732
Introduction of GB/T 1732-2020
Codeofchina.com is in charge of this English translation. In case of any doubt about the English translation, the Chinese original shall be considered authoritative. This standard is developed in accordance with the rules given in GB/T 1.1-2009. This standard replaces GB/T 1732-1993 Determination of impact resistance of film. In addition to editorial changes, the following main technical changes have been made with respect to GB/T 1732-1993: ——In normative references, GB 308, GB 708, GB 1727 and GB 1764 are deleted; GB/T 308.1-2013, GB/T 9278, GB/T 13452.2, GB/T 20777 and GB/T 37356 are added (see Clause 2; Clause 2 of Edition 1993); ——The clause “Principle” and clause “Expression of results” are added (see Clause 3 and Clause 8); ——The regulations on punch and steel ball of impact tester are modified (see 4.1; 3.2.2 of Edition 1993); ——The correction method of impact tester is deleted (see 3.4 of Edition 1993); ——The substrate dimension is modified (see 6.1; 5.1 of Edition 1993); ——The distances between the edge of the impact point and the edge of the test panel as well as the edge of adjacent impact points are modified (see 7.3, 6.2 of Edition 1993); ——The requirements for adjusting the height interval of hammer and the lighting conditions for observation of results are added (see 7.3); ——The test report is modified (see Clause 9; Clause 7 of Edition 1993); This standard was proposed by China Petroleum and Chemical Industry Association. This standard is under the jurisdiction of National Technical Committee 5 on Paints & Pigments of Standardization Administration of China (SAC/TC 5). The previous editions of this standard are as follows: ——GB 1732-1979 and GB/T 1732-1993. Determination of impact resistance of coating films 1 Scope This standard specifies the test method for determining the impact resistance of coating films by the maximum height (in cm) of the hammer of a fixed mass falling on the punch without causing any coating film damage when the punch hits the test panel. This standard is applicable to the determination of impact resistance performance of coating films. 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 (including any amendments) applies. GB/T 308.1-2013 Rolling bearings - Balls - Part 1: Steel balls GB/T 3186 Paints, varnishes and raw materials for paints and varnishes - Sampling GB/T 9271 Paints and varnishes - Standard panels for testing GB/T 9278 Temperatures and humidities for conditioning and testing of paint specimens GB/T 13452.2 Paints and varnishes - Determination of film thickness GB/T 20777 Paints and varnishes - Examination and preparation of samples for testing GB/T 37356 Paints and varnishes - Lighting and procedure for visual assessments of coatings 3 Principle Coat the sample under test to applicable metal substrate, and after curing, drop a hammer of fixed mass from a certain height to impact the punch, so that the coating film and substrate are deformed. It may be forward punching (with coating film upwards) or backward punching (with coating film downwards). By gradually increasing the falling height of the hammer, the numerical points where the coating film is liable to damage are determined.   4 Instruments and equipment 4.1 Impact tester The maximum scale of the guide tube is (50.0±0.1)cm with graduation of 1cm, and the weight of the hammer is (1,000±1)g, which may move freely in the guide tube. The steel ball on the punch has a diameter of (8.000±0.015)mm and a hardness (HRC) of 61 ~ 66, which shall meet the requirements of GB/T 308.1-2013. The center of the impact is aligned with that of die groove with the depth of punch into the groove of (2.0±0.1)mm; the die groove whose diameter is (15.0±0.3)mm shall be smooth; the radius of curvature of groove edge is 2.5mm~3.0mm. The impact tester is shown in Figure 1. Key: 1——guide tube 2——hammer controller 3——graduation line 4——punch guide groove 5——die 6——base 7——support 8——punch 9——guide tube 10——hammer Figure 1 Schematic diagram of impact tester 4.2 Magnifier 4X magnifier. 5 Sample Take a representative sample of the product under test (or each product in the case of a multi-coat system) as described in GB/T 3186. Examine and prepare each sample for testing, as described in GB/T 20777. 6 Test panels 6.1 Substrate Unless otherwise specified, the substrate is tinplate or steel plate, which shall meet the technical requirements of GB/T 9271, and whose dimension shall be 120mm× 50mm× (0.20mm ~ 0.30mm) and 150mm×70mm×(0.45mm~0.55mm) respectively. 6.2 Treatment of substrate and coating of test panel Unless otherwise specified, treat each test substrate in accordance with GB/T 9271 and then coat the product or system under test by the specified method. 6.3 Drying and conditioning Dry (or stove) and cure each coated test panel for the specified time under the specified conditions. Test panels that are not cured under the conditions specified in GB/T 9278, when drying, shall be conditioned for at least 16h under the conditions specified in GB/T 9278 before testing. 6.4 Thickness of coating film The thickness of coating films shall be specified or agreed. The thickness of coating films shall be determined according to one of the determination methods for dry film thickness specified in GB/T 13452.2 and expressed in micrometers (μm).
Contents of GB/T 1732-2020
Foreword i 1 Scope 2 Normative references 3 Principle 4 Instruments and equipment 5 Sample 6 Test panels 7 Test procedures 8 Expression of results 9 Test report
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Keywords:
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