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

百检网 2021-07-15
标准号:DIN ISO 48-2009
中文标准名称: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
英文标准名称: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
标准类型:G35
发布日期:1999/12/31 12:00:00
实施日期:1999/12/31 12:00:00
中国标准分类号:G35
国际标准分类号:83.060
引用标准:ISO 18898;ISO 23529
适用范围:1.1 GeneralThis International Standard specifies four methods for the determination of the hardness of vulcanized orthermoplastic rubbers on flat surfaces (standard-hardness methods) and four methods for the determination ofthe apparent hardness of curved surfaces (apparent-hardness methods). The hardness is expressed ininternational rubber hardness degrees (IRHD). The methods cover the hardness range from 10 IRHD to100 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 inFigure 1.The determination of hardness by a pocket hardness meter is described in ISO 7619-2.1.2 Standard-hardness methodsMethod N: Normal test -- This method is appropriate for rubbers with a hardness in the range 35 IRHD to85 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 IRHDto 100 IRHD.Method L: Low-hardness test -- This method is appropriate for rubbers with a hardness in the range 10 IRHDto 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 therange 35 IRHD to 85 IRHD, but may also be used for hardnesses in the range 30 IRHD to 95 IRHDNOTE 1 The value of the hardness obtained by method N within the ranges from 85 IRHD to 95 IRHD and from30 IRHD to 35 IRHD may not agree precisely with that obtained using method H or method L, respectively. The differenceis 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 methodsAlso specified are four methods. CN CH. CL and CM, for the determination of the apparent hardness ofcurved surfaces. These methods are modifications of methods N, H, L and M. respectively, for cases wherethe rubber surface tested is curved. Two cases exist, depending whethera) 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 instrumentApparent 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 coversome of the commonest types, such as O-ringsDetermination of the apparent hardness of rubber-covered rollers is dealt with separately in the various partsof ISO 7267

百检能给您带来哪些改变?

1、检测行业全覆盖,满足不同的检测;

2、实验室全覆盖,就近分配本地化检测;

3、工程师一对一服务,让检测更精准;

4、免费初检,初检不收取检测费用;

5、自助下单 快递免费上门取样;

6、周期短,费用低,服务周到;

7、拥有CMA、CNAS、CAL等权威资质;

8、检测报告权威有效、中国通用;

客户案例展示

  • 上海朗波王服饰有限公司
  • 浙江圣达生物药业股份有限公司
  • 天津市长庆电子科技有限公司
  • 上海纽特丝纺织品有限公司
  • 无锡露米娅纺织有限公司
  • 东方电气风电(凉山)有限公司
相关问答