SIST EN ISO 642:2024 PDF

Name: SIST EN ISO 642:2024 — Steel - Hardenability test by end quenching (Jominy test) (ISO 642:2024)
SKU: SIST EN ISO 642:2024
Price: 81.94 EUR
Availability: InStock

Steel - Hardenability test by end quenching (Jominy test) (ISO 642:2024)

Название (английский):

SIST EN ISO 642:2024

Steel - Hardenability test by end quenching (Jominy test) (ISO 642:2024)

Статус документа:: Действующий
Формат:: Электронный (PDF)
Количество страниц:: 27
Дата публикации:: 11 октября 2024 г.
Издание:: ISO 642:2024
ICS:: 77.040.99

Тип поставки:

Full version405 €Read online 24h10 €Read online 72h15 €

Язык документа:

ruen

Срок поставки:5 раб. дн. (перевод)

Цена:405 €

Описание (английский):

This document specifies a method for determining the hardenability of steel by end quenching (Jominy test) by using a test piece 25 mm in diameter and at least 100 mm long. By agreement and for a defined field of application, the test described in this document can be replaced by the calculation of the Jominy curve according to an accepted mathematical model.

Abstract

Похожие стандарты

Упомянутые в описании и другие стандарты SIST

Overview

EN ISO 642:2024 - Steel: Hardenability test by end quenching (Jominy test) defines the standardized method for measuring the hardenability of steels using the Jominy end-quench test. The document specifies test-piece geometry, heating, quenching and hardness-measurement procedures to produce a reproducible Jominy curve (hardness vs. distance from quenched end). The 2024 edition supersedes EN ISO 642:1999 and includes revised test-piece dimensions, updated heat‑treatment and apparatus requirements, and options to calculate the Jominy curve by accepted mathematical models (Annex C).

Key topics and technical requirements

Test-piece geometry: cylindrical specimen machined to 25 mm diameter and at least 100 mm length; test length L = 97 ± 0.5 mm.

Sampling and preparation: guidance for obtaining specimens from product or forging; recommended minimum reduction ratio 5:1 before sampling for continuous-cast products.

Heat treatment: austenitizing at a specified temperature for 30 minutes (t), with a maximum 5 s lag between removal from furnace and start of quenching.

Quenching apparatus and conditions: vertical water supply pipe internal diameter 12.5 ± 0.5 mm, water jet height 65 ± 10 mm, distance from pipe to lower end 12.5 ± 0.5 mm; standardised fixture/centring devices and water temperature requirements are defined.

Hardness measurement: flats are machined along the axis (flat depth 0.4–0.5 mm) and hardness values (HRC or HV30) are measured at defined distances from the quenched end to produce the Jominy hardness profile (symbols such as Jd, Jxx‑d, JHVxx‑d).

Results and codification: procedures for drawing hardness curves, expressing hardenability characteristics, and codifying test results are included. Calculation of the Jominy curve by an accepted mathematical model is permitted by agreement.

Applications and practical value

Heat‑treatment design: determine the depth and variation of hardening for selecting quench/temper parameters.

Material selection and specification: compare steels by hardenability for gears, shafts, fasteners and other critical components.

Quality control and R&D: routine lab testing to verify production lots, validate heat-treatment cycles, and support metallurgical development.

Failure analysis: assess whether inadequate hardening contributed to component failure.

Related standards

ISO/TC 17 (Steel) and CEN/TC 459 technical committees prepare and maintain related test methods; Annex C of EN ISO 642:2024 provides computational methods for the Jominy curve. For procurement and conformity, consult product-specific standards referenced by purchasers or national standards bodies.

Keywords: EN ISO 642:2024, Jominy test, hardenability, steel hardenability test, end quenching, Jominy curve, hardness profile, test-piece dimensions.

SIST EN ISO 642:2024 PDF

Abstract

Похожие стандарты

Overview

Key topics and technical requirements

Applications and practical value

Who should use this standard

Related standards

Технические детали

ISO 642:2024

Steel — Hardenability test by end quenching (Jominy test)

ISO 642:1999

Steel — Hardenability test by end quenching (Jominy test)

SIST EN ISO 6338:2026

Method to calculate GHG emissions at LNG plant (ISO 6338:2023)

SIST-TP CEN ISO/ASTM TR 52958:2026

Additive manufacturing of metals - Powder bed fusion (PBF) - In-situ coaxial photodiode monitoring for lack o…

SIST EN ISO 41002:2026

Facility management - Development of the facility management organization (ISO 41002:2026)

SIST EN ISO 844:2026

Rigid cellular plastics - Determination of compressive properties (ISO 844:2026)

SIST-TS CEN ISO/TS 17664-3:2026

Processing of health care products - Information to be provided by the medical device manufacturer for the pr…

SIST EN ISO 8980-4:2026

Ophthalmic optics - Uncut finished spectacle lenses - Part 4: Specifications and test methods for the propert…