ISO 9328-4-2018 PDF

Full title and description

Steel flat products for pressure purposes — Technical delivery conditions — Part 4: Nickel-alloy steels with specified low temperature properties. This document specifies the technical delivery conditions for plates and strip intended for pressure equipment that are made from nickel-alloy steels (tables A.1 and B.1 list the steels covered).

Abstract

ISO 9328-4:2018 defines the chemical, mechanical and testing requirements, delivery conditions and associated documentation for nickel-alloy steel plates and strip used in pressure equipment, with particular attention to properties at low temperatures. The standard refers to and works in conjunction with the general requirements of ISO 9328‑1 and provides options to specify products compatible with European and ASME-type design codes.

General information

• Status: Published (current edition).
• Publication date: 1 February 2018.
• Publisher: International Organization for Standardization (ISO).
• ICS / categories: 77.140.30 (Steels for pressure purposes); 77.140.50 (Flat steel products and semi‑products).
• Edition / version: Edition 4 (2018).
• Number of pages: 13.

These bibliographic and lifecycle details are reported by ISO for ISO 9328-4:2018.

Scope

ISO 9328-4:2018 applies to plates and strip for pressure equipment made of nickel‑alloy steels listed in the standard’s tables; it specifies technical delivery conditions including required mechanical properties (with emphasis on low‑temperature behavior), chemical composition, testing and inspection, heat treatment, tolerances, marking and documentation. The general provisions and definitions from ISO 9328‑1 apply throughout. The document also makes provision for specifying materials in a way that is compatible with European and ASME-type pressure-equipment design codes.

Key topics and requirements

• Definition of nickel‑alloy steel grades applicable for pressure‑equipment flat products (tables A.1 and B.1).
• Chemical composition limits and permitted variations for specified grades.
• Mechanical property requirements, including yield and tensile strength and specified low‑temperature impact performance.
• Heat‑treatment and delivery condition options (e.g., tempering/annealing requirements where applicable).
• Required testing and inspection: tensile tests, impact tests at specified temperatures, hardness checks and non‑destructive examination as agreed.
• Tolerances on dimensions and shape, marking, packaging and certification/documentation on delivery.
• Reference to ISO 9328‑1 for general delivery requirements, ordering information and conformity assessment rules.

These topics summarise the principal technical content and purchaser/supplier obligations addressed by the standard.

Typical use and users

Used by steel producers (mills), material suppliers, pressure‑vessel and boiler manufacturers, fabricators, inspection and testing laboratories, design engineers and procurement/specification teams. Typical applications include pressure vessels, boilers, cryogenic and low‑temperature equipment and other pressure‑retaining components where nickel‑alloy steels are specified for their low‑temperature toughness and corrosion/creep resistance.

Related standards

ISO 9328-4:2018 is part of the ISO 9328 series for steel flat products for pressure purposes; the series’ Part 1 contains general requirements (ISO 9328‑1:2018) and other parts cover steels with elevated temperature properties (Part 2), austenitic and fine‑grain steels and various production/conditioning routes (e.g., Parts 5 and 6). Users commonly cross‑reference ISO 9328‑1 and the other part documents when specifying materials for pressure equipment.

Keywords

ISO 9328-4, nickel‑alloy steels, pressure equipment, technical delivery conditions, low‑temperature properties, plate, strip, mechanical properties, impact testing, ISO 9328 series.

FAQ

Q: What is this standard?

A: ISO 9328‑4:2018 is an international standard that specifies technical delivery conditions for nickel‑alloy steel plates and strip intended for pressure‑equipment applications, focusing on properties required at low temperatures.

Q: What does it cover?

A: It covers the definition of applicable nickel‑alloy grades, chemical and mechanical requirements (including low‑temperature impact performance), required tests and inspections, heat‑treatment/delivery states, dimensional tolerances, marking and documentation for material delivery.

Q: Who typically uses it?

A: Steel mills and material suppliers, designers and manufacturers of pressure vessels and boilers, welding and fabrication shops, inspection bodies and procurement/specification engineers who need standardized requirements for nickel‑alloy steels used in pressure equipment.

Q: Is it current or superseded?

A: The 2018 edition (Edition 4) is the current published edition (published 1 February 2018). It replaced earlier editions (including the 2011 edition). Users should check the ISO catalogue or national standards bodies for any subsequent revisions or work items.

Q: Is it part of a series?

A: Yes — ISO 9328 is a multi‑part series (Part 1: general requirements; Parts 2–6 cover other groups of steels and production conditions). ISO 9328‑4 works together with ISO 9328‑1 and the other parts when specifying steel flat products for pressure purposes.

Q: What are the key keywords?

A: Nickel‑alloy steels; pressure equipment; low‑temperature properties; plate; strip; technical delivery conditions; ISO 9328; testing and inspection; material specification.