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Rubber, vulcanized or thermoplastic — Determination of hardness — Part 2: Hardness between 10 IRHD and 100 IRHD
| 분야 | ISO/TC 45/SC 2 : Testing and analysis |
|---|---|
| 적용범위 | This document 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. These 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. This document does not specify a method for the determination of hardness by a pocket hardness meter, which is described in ISO 48-5. This document specifies the following four methods for the determination of standard hardness. — Method N (normal test) is appropriate for rubbers with a hardness in the range 35 IRHD to 85 IRHD, but can also be used for hardnesses in the range 30 IRHD to 95 IRHD. — Method H (high-hardness test) is appropriate for rubbers with a hardness in the range 85 IRHD to 100 IRHD. — Method L (low-hardness test) is appropriate for rubbers with a hardness in the range 10 IRHD to 35 IRHD. — Method M (microtest) 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 can 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 85 IRHD to 95 IRHD and 30 IRHD to 35 IRHD might 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 might not always give results agreeing with those obtained by the normal test. This document also specifies 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, and are used when the rubber surface tested is curved, in which case there are two possibilities: a) the test piece or product tested is large enough for the hardness instrument to rest upon it; b) the test piece or product tested 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 upon the support surface of the instrument. Apparent hardness can also be measured on non-standard flat test pieces using 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. |
| 국제분류(ICS)코드 | 83.060 : 고무 |
| 페이지수 | 23 |
| Edition | 1 |
| No. | 표준번호 | 표준명 | 발행일 | 상태 |
|---|---|---|---|---|
| 1 | ISO 48-2:2018 | Rubber, vulcanized or thermoplastic — Determination of hardness — Part 2: Hardness between 10 IRHD and 100 IRHD | 2018-08-20 | 표준 |
ISO 48-1:2018 - Rubber, vulcanized or thermoplastic — Determination of hardness — Part 1: Introduction and guidance 상세보기
ISO 48-3:2018 - Rubber, vulcanized or thermoplastic — Determination of hardness — Part 3: Dead-load hardness using the very low rubber hardness (VLRH) scale 상세보기
ISO 48-4:2018 - Rubber, vulcanized or thermoplastic — Determination of hardness — Part 4: Indentation hardness by durometer method (Shore hardness) 상세보기
ISO 48-5:2018 - Rubber, vulcanized or thermoplastic — Determination of hardness — Part 5: Indentation hardness by IRHD pocket meter method 상세보기
ISO 48-6:2018 - Rubber, vulcanized or thermoplastic — Determination of hardness — Part 6: Apparent hardness of rubber-covered rollers by IRHD method 상세보기
ISO 48-1:2018 - Rubber, vulcanized or thermoplastic — Determination of hardness — Part 1: Introduction and guidance 상세보기
ISO 48-3:2018 - Rubber, vulcanized or thermoplastic — Determination of hardness — Part 3: Dead-load hardness using the very low rubber hardness (VLRH) scale 상세보기
ISO 48-4:2018 - Rubber, vulcanized or thermoplastic — Determination of hardness — Part 4: Indentation hardness by durometer method (Shore hardness) 상세보기
ISO 48-5:2018 - Rubber, vulcanized or thermoplastic — Determination of hardness — Part 5: Indentation hardness by IRHD pocket meter method 상세보기
ISO 48-6:2018 - Rubber, vulcanized or thermoplastic — Determination of hardness — Part 6: Apparent hardness of rubber-covered rollers by IRHD method 상세보기
IEC TS 63134:2020 - Active assisted living (AAL) use cases 상세보기
IEC 60034-5:2020 RLV - Rotating electrical machines - Part 5: Degrees of protection provided by the integral design of rotating electrical machines (IP code) - Classification 상세보기
KS B ISO TS 25740-1 - 에스컬레이터 및 무빙워크에 대한 안전요건 — 제1부: 세계공통 필수 안전요건(GESRs) 상세보기
KS B ISO TS 8100-21 - 승객 및 화물 운송용 엘리베이터 —제21부: 세계공통 필수안전요건(GESRs)을 충족하는 세계공통 안전 파라미터(GSPs) 상세보기
KS C IEC TS 62872 - 산업 시설과 스마트 그리드 사이의 산업 공정 측정, 제어 및 자동화 시스템 인터페이스 상세보기
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