ISO 683-2-2016 PDF

Full title and description

Heat‑treatable steels, alloy steels and free‑cutting steels — Part 2: Alloy steels for quenching and tempering. This International Standard specifies the technical delivery requirements (chemical composition, mechanical properties, heat‑treatment and surface/finish conditions) for semi‑finished products, bars, wire‑rod, finished flat products and hammer/drop forgings manufactured from direct‑hardening alloy steels and alloy flame‑ and induction‑hardening steels intended for quenched‑and‑tempered or austempered and flame/induction‑hardened machine parts.

Abstract

ISO 683‑2:2016 defines technical delivery requirements for a defined set of alloy steels (listed in the standard's tables) and the permitted product forms and heat‑treatment conditions. It restricts mechanical property requirements to specific sizes and product forms, excludes certain bright products and cold‑heading wire‑rod, and refers to ISO 404 for general technical delivery requirements. Variations may be agreed between purchaser and supplier.

General information

• Status: Published
• Publication date: 29 June 2016 (2016‑06/2016‑07 publication period)
• Publisher: International Organization for Standardization (ISO)
• ICS / categories: 77.140.10; 77.140.20; 77.140.45
• Edition / version: Edition 2 (2016)
• Number of pages: 40

Scope

Specifies the technical delivery requirements for semi‑finished products (blooms, billets, slabs), bars, wire‑rod, finished flat products and hammer/drop forgings made from the direct‑hardening alloy steels and alloy flame‑ and induction‑hardening steels listed in the standard. It covers the applicable heat‑treatment conditions, surface conditions and the limited set of mechanical property requirements for specified sizes; excludes bright products and cold‑heading wire‑rod (refer to ISO 683‑18 and ISO 4954 for those), and notes that special conditions may be agreed at order/enquiry.

Key topics and requirements

• Technical delivery requirements for specific alloy steels (chemical composition limits and designation tables).
• Permitted product forms: semi‑finished products, bars, wire‑rod, finished flat products, hammer/drop forgings.
• Heat‑treatment conditions (quenched and tempered, austempered where specified, flame/induction hardening) and referenced heat‑treatment tables.
• Surface/finish conditions and permitted deviations; exclusions for bright and cold‑heading products.
• Mechanical property requirements (tensile, yield, elongation, hardness) limited to sizes shown in the standard's tables.
• Inspection, sampling and test requirements; reference to general delivery requirements in ISO 404 and to inspection documents and sampling standards.

Typical use and users

Used by steel producers and mills, distributors, heat‑treatment shops, forging and machining manufacturers, procurement and quality engineers, design engineers specifying material for quenched‑and‑tempered components (gears, shafts, fasteners and machine parts) and laboratories performing acceptance testing and certification.

Related standards

Belongs to the ISO 683 series on heat‑treatable, alloy and free‑cutting steels (other parts cover different steel types and product forms). Commonly used alongside ISO 404 (general technical delivery requirements), ISO 10474 (inspection documents), ISO 14284 (sampling and preparation), ISO 4954 and ISO 683‑18 (bright products / cold‑heading).

Keywords

alloy steels; heat‑treatable steels; quenched and tempered; austempering; flame hardening; induction hardening; technical delivery requirements; mechanical properties; ISO 683; steel product specifications

FAQ

Q: What is this standard?

A: ISO 683‑2:2016 is an International Standard that specifies technical delivery requirements for selected alloy steels intended for quenching and tempering and related hardening processes.

Q: What does it cover?

A: It covers chemical composition limits, product forms (semi‑finished, bars, wire‑rod, flat products, forgings), permitted heat‑treatment and surface conditions, and mechanical property requirements limited to sizes shown in the standard's tables. It also sets inspection and delivery obligations and points to ISO 404 for general delivery rules.

Q: Who typically uses it?

A: Steel manufacturers, material suppliers, heat‑treaters, component manufacturers (forging, machining), purchasing and quality departments, and testing laboratories.

Q: Is it current or superseded?

A: ISO 683‑2:2016 is the 2nd edition published in 2016 and was confirmed (reviewed) by ISO in the subsequent review cycle; it remains the current published edition pending any future revision.

Q: Is it part of a series?

A: Yes — it is Part 2 of the ISO 683 series (Heat‑treatable steels, alloy steels and free‑cutting steels); the series includes other parts that cover non‑alloy steels, stainless steels, free‑cutting steels and special product forms.

Q: What are the key keywords?

A: Alloy steels, heat‑treatable, quenched and tempered, austempered, flame hardening, induction hardening, technical delivery requirements, mechanical properties, ISO 683.