DIN ISO 48-2009
硫化或热塑橡胶.硬度的测定(硬度在10 IRHD至100 IRHD之间)(ISO 48:2007),DIN ISO 48:2009-10的英文版本

Rubber, vulcanized or thermoplastic - Determination of hardness (hardness between 10 IRHD and 100 IRHD) (ISO 48:2007);English version of DIN ISO 48:2009-10

DIN ISO 48-2009 发布历史

1.1 General This International Standard specifies four methods for the determination of the hardness of vulcanized or thermoplastic rubbers on flat surfaces (standard-hardness methods) and four methods for the determination of the apparent hardness of curved surfaces (apparent-hardness methods). The hardness is expressed in international rubber hardness degrees (IRHD). The methods cover the hardness range from 10 IRHD to 100 IRHD. The methods differ primarily in the diameter of the indenting ball and the magnitude of the indenting force, these being chosen to suit the particular application. The range of applicability of each method is indicated in Figure 1. The determination of hardness by a pocket hardness meter is described in ISO 7619-2. 1.2 Standard-hardness methods Method N: Normal test -- This method is appropriate for rubbers with a hardness in the range 35 IRHD to 85 IRHD, but may also be used for hardnesses in the range 30 IRHD to 95 IRHD. Method H: High-hardness test -- This method is appropriate for rubbers with a hardness in the range 85 IRHD to 100 IRHD. Method L: Low-hardness test -- This method is appropriate for rubbers with a hardness in the range 10 IRHD to 35 IRHD. Method M: Microtest -- This method is essentially a scaled-down version of the normal test method N, permitting the testing of thinner and smaller test pieces. It is appropriate for rubbers with a hardness in the range 35 IRHD to 85 IRHD, but may also be used for hardnesses in the range 30 IRHD to 95 IRHD NOTE 1 The value of the hardness obtained by method N within the ranges from 85 IRHD to 95 IRHD and from 30 IRHD to 35 IRHD may not agree precisely with that obtained using method H or method L, respectively. The difference is not normally significant for technical purposes. NOTE 2 Because of various surface effects in the rubber and the possibility of slight surface roughness (produced, for example, by buffing), the microtest may not always give results agreeing with those obtained by the normal test. 1.3 Apparent-hardness methods Also specified are four methods. CN CH. CL and CM, for the determination of the apparent hardness of curved surfaces. These methods are modifications of methods N, H, L and M. respectively, for cases where the rubber surface tested is curved. Two cases exist, depending whether a) the test piece or product tested is large enough for the hardness instrument to rest upon it; b) it is small enough for both the test piece and the instrument to rest upon a common support. A variant of b) would be where the test piece rests on the specimen table of the instrument Apparent hardness can also be measured an non-standard flat test pieces usJng methods N, H, L and M. The procedures described cannot provide for all possible shapes and dimensions of test piece, but cover some of the commonest types, such as O-rings Determination of the apparent hardness of rubber-covered rollers is dealt with separately in the various parts of ISO 7267

DIN ISO 48-2009由德国标准化学会 DE-DIN 发布于 2009-10。

DIN ISO 48-2009 在中国标准分类中归属于: G35 合成橡胶，在国际标准分类中归属于: 83.060 橡胶。

DIN ISO 48-2009 发布之时，引用了标准

• ISO 18898 橡胶.硬度测定仪校准和检验*， 2016-02-01 更新
• ISO 23529 橡胶.物理试验方法用试样制备和整修的一般规程*， 2016-11-01 更新

* 在 DIN ISO 48-2009 发布之后有更新，请注意新发布标准的变化。

DIN ISO 48-2009的历代版本如下：

• 2021年02月 DIN ISO 48-2-2021 硫化或热塑性橡胶. 硬度测定. 第2部分: 10 IHD到100 IHD之间的硬度(ISO 48-2-2018)
• 2003年07月 DIN ISO 48-2003 硫化橡胶或热塑性橡胶.硬度的测定(硬度在10-100国际橡胶硬度标度(IRHD)之间)
• 2009年10月 DIN ISO 48-2009 硫化或热塑橡胶.硬度的测定(硬度在10 IRHD至100 IRHD之间)(ISO 48:2007),DIN ISO 48:2009-10的英文版本
• 2021年02月 DIN ISO 48-3-2021 硫化橡胶或热塑性橡胶. 硬度的测定. 第3部分: 使用极低橡胶硬度(VLRH)刻度的静载硬度(ISO 48-3-2018)
• 2021年02月 DIN ISO 48-4-2021 硫化或热塑性橡胶. 硬度测定. 第4部分: 用硬度计法测定压痕硬度(肖氏硬度)(ISO 48-4-2018)
• 2021年02月 DIN ISO 48-8-2021 硫化橡胶或热塑性橡胶. 硬度的测定. 第8部分: 用Pusey和Jones方法测定橡胶包覆辊的表观硬度(ISO 48-8-2018)
• 2021年02月 DIN ISO 48-9-2021 硫化橡胶或热塑性橡胶. 硬度的测定. 第9部分: 硬度测试仪的校准和验证(ISO 48-9-2018)

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标准号

DIN ISO 48-2009

发布日期

2009年10月

实施日期

废止日期

无

中国标准分类号

G35

国际标准分类号

83.060

发布单位

DE-DIN

引用标准

ISO 18898 ISO 23529

代替标准

DIN ISO 48-2016

被代替标准

DIN ISO 48-2003 DIN ISO 48-2008

适用范围

1.1 General This International Standard specifies four methods for the determination of the hardness of vulcanized or thermoplastic rubbers on flat surfaces (standard-hardness methods) and four methods for the determination of the apparent hardness of curved surfaces (apparent-hardness methods). The hardness is expressed in international rubber hardness degrees (IRHD). The methods cover the hardness range from 10 IRHD to 100 IRHD. The methods differ primarily in the diameter of the indenting ball and the magnitude of the indenting force, these being chosen to suit the particular application. The range of applicability of each method is indicated in Figure 1. The determination of hardness by a pocket hardness meter is described in ISO 7619-2. 1.2 Standard-hardness methods Method N: Normal test -- This method is appropriate for rubbers with a hardness in the range 35 IRHD to 85 IRHD, but may also be used for hardnesses in the range 30 IRHD to 95 IRHD. Method H: High-hardness test -- This method is appropriate for rubbers with a hardness in the range 85 IRHD to 100 IRHD. Method L: Low-hardness test -- This method is appropriate for rubbers with a hardness in the range 10 IRHD to 35 IRHD. Method M: Microtest -- This method is essentially a scaled-down version of the normal test method N, permitting the testing of thinner and smaller test pieces. It is appropriate for rubbers with a hardness in the range 35 IRHD to 85 IRHD, but may also be used for hardnesses in the range 30 IRHD to 95 IRHD NOTE 1 The value of the hardness obtained by method N within the ranges from 85 IRHD to 95 IRHD and from 30 IRHD to 35 IRHD may not agree precisely with that obtained using method H or method L, respectively. The difference is not normally significant for technical purposes. NOTE 2 Because of various surface effects in the rubber and the possibility of slight surface roughness (produced, for example, by buffing), the microtest may not always give results agreeing with those obtained by the normal test. 1.3 Apparent-hardness methods Also specified are four methods. CN CH. CL and CM, for the determination of the apparent hardness of curved surfaces. These methods are modifications of methods N, H, L and M. respectively, for cases where the rubber surface tested is curved. Two cases exist, depending whether a) the test piece or product tested is large enough for the hardness instrument to rest upon it; b) it is small enough for both the test piece and the instrument to rest upon a common support. A variant of b) would be where the test piece rests on the specimen table of the instrument Apparent hardness can also be measured an non-standard flat test pieces usJng methods N, H, L and M. The procedures described cannot provide for all possible shapes and dimensions of test piece, but cover some of the commonest types, such as O-rings Determination of the apparent hardness of rubber-covered rollers is dealt with separately in the various parts of ISO 7267

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