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Jis K 6253 Standard Pdf


Jis K 6253 Standard Pdf - A Guide to Rubber Hardness Testing




Rubber is a widely used material in various industries, such as automotive, aerospace, medical, and consumer products. Rubber has many desirable properties, such as elasticity, flexibility, durability, and resistance to abrasion, heat, and chemicals. However, rubber also has some drawbacks, such as aging, deformation, and deterioration. Therefore, it is important to measure and control the quality and performance of rubber products.




Jis K 6253 Standard Pdf



One of the most common and important tests for rubber is the hardness test. Hardness is a property that reflects the resistance of a material to deformation by an indenter or a force. Hardness testing can provide useful information about the strength, stiffness, wear resistance, and fatigue resistance of rubber. Hardness testing can also help to identify the type, grade, and quality of rubber materials.


There are various methods and standards for measuring the hardness of rubber. One of the most widely used standards is the JIS K 6253 standard. JIS K 6253 is a Japanese Industrial Standard (JIS) that specifies the testing methods to measure the hardness of vulcanized rubber and thermoplastic rubber. JIS K 6253 was first published in 1975 and has been revised several times since then. The latest version of JIS K 6253 was published in 2012 and consists of five parts:



  • JIS K 6253-1: General guidance



  • JIS K 6253-2: IRHD dead-load method



  • JIS K 6253-3: Durometer method



  • JIS K 6253-4: IRHD pocket meter method



  • JIS K 6253-5: Calibration and verification of hardness testers




In this article, we will provide a brief overview of each part of JIS K 6253 and explain how to download the Jis K 6253 Standard Pdf file.


JIS K 6253-1: General guidance




This part of JIS K 6253 specifies the general rules for determining the hardness of vulcanized rubber and thermoplastic rubber. It is intended to provide types of determination methods of hardness of vulcanized rubber and thermoplastic rubber, and assist in the selection of an appropriate method. It also defines some terms and symbols related to hardness testing.


This part of JIS K 6253 is based on ISO 18517:2005 Rubber, vulcanized or thermoplastic-Hardness testing- Introduction and guide (MOD). MOD means that this part of JIS K 6253 has some modifications from ISO 18517:2005.


JIS K 6253-2: IRHD dead-load method




This part of JIS K 6253 specifies a method for determining the hardness of vulcanized or thermoplastic rubber by means of an IRHD (International Rubber Hardness Degrees) dead-load instrument. This method is suitable for measuring the hardness of flat specimens with a minimum thickness of 2 mm or curved specimens with an inside radius greater than or equal to 5 mm.


This part of JIS K 6253 is based on ISO 48-2:2007 Rubber, vulcanized or thermoplastic-Determination of hardness-Part 2: IRHD dead-load instrument (MOD).


JIS K 6253-3: Durometer method




This part of JIS K 6253 specifies a method for determining the hardness of vulcanized or thermoplastic rubber using durometers. Durometers are instruments that measure the depth of penetration of a specified indenter into the material under a specified force. There are different types of durometers for different types of rubber materials, such as type A, type D, type E, type M, type O, type OO, type DO, type C, type B, and type CF.


This part of JIS K 6253 is based on ISO 7619-1:2010 Rubber, vulcanized or thermoplastic-Determination of indentation hardness by means of a durometer (Shore hardness) (MOD).


JIS K 6253-4: IRHD pocket meter method




This part of JIS K 6253 specifies a method for determining the hardness of vulcanized or thermoplastic rubber by means of a pocket hardness meter calibrated in IRHD. The use of such meters is primarily intended for control purposes, where tests are made on finished products or on products in production. The pocket hardness meter is a portable instrument that can measure the hardness of specimens with a minimum thickness of 6 mm or curved specimens with an inside radius greater than or equal to 30 mm.


This part of JIS K 6253 is based on ISO 48-4:2007 Rubber, vulcanized or thermoplastic-Determination of hardness-Part 4: IRHD pocket meter method (MOD).


JIS K 6253-5: Calibration and verification of hardness testers




This part of JIS K 6253 specifies procedures for the calibration and verification of the IRHD dead-load instruments (JIS K 6253-2), durometers (JIS K 6253-3) and IRHD pocket meters (JIS K 6253-4). It also specifies the requirements for reference standards, calibration blocks, and test conditions.


This part of JIS K 6253 is based on ISO 18898:2004 Rubber, vulcanized or thermoplastic-Determination of hardness-Calibration and verification of hardness testers (MOD).


How to download Jis K 6253 Standard Pdf




If you are interested in downloading the Jis K 6253 Standard Pdf file, you can visit the official website of the Japanese Standards Association (JSA) at [www.jsa.or.jp]. The JSA is the national standards body of Japan that develops and publishes JIS standards. You can search for JIS K 6253 in the online catalog and purchase the PDF file for each part of the standard. The price for each part ranges from 1,500 to 2,000 yen (approximately 14 to 18 US dollars).


Alternatively, you can also visit some online platforms that provide access to various standards, such as [GlobalSpec], [Engineering360], or [VSIP.INFO]. These platforms allow you to view the abstract, scope, and references of JIS K 6253 for free. However, if you want to download the full PDF file, you may need to pay a fee or register an account.


Conclusion




Jis K 6253 Standard Pdf is a useful resource for anyone who wants to learn more about rubber hardness testing. It covers various methods and instruments for measuring the hardness of vulcanized rubber and thermoplastic rubber. It also provides general guidance and calibration procedures for ensuring the accuracy and reliability of hardness testing. By downloading the Jis K 6253 Standard Pdf file, you can gain access to the latest version of the standard and apply it to your rubber products.


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