JIS G 4053-2016 PDF

Full title and description

JIS G 4053-2016 — Low-alloyed steels for machine structural use. This Japanese Industrial Standard specifies requirements for low‑alloy steels intended for machine structural applications when manufactured by hot rolling, hot forging and hot extrusion. It covers classification, chemical composition, mechanical properties, dimensional and surface requirements, testing, inspection and marking for steel products with generally uniform cross‑sections (excluding steel tubes).

Abstract

JIS G 4053:2016 defines grades, symbols, manufacturing methods and quality requirements for low‑alloy steels used in machine construction. The standard includes limits for chemical composition and mechanical properties, dimensional tolerances, testing and inspection procedures, marking and reporting requirements, and normative annexes that give additional requirements for hot‑extruded sections and selected manufacturing routes. The 2016 edition was issued with a later amendment (Amendment 1:2018) and has since been replaced by a 2023 revision.

General information

• Status: Superseded (replaced by JIS G 4053:2023).
• Publication date: 21 November 2016 (JIS G 4053:2016); Amendment 1 published 20 August 2018; superseded by the 22 May 2023 revision.
• Publisher: Japanese Standards Association (JSA) / Japanese Industrial Standards committee (JIS).
• ICS / categories: 77.140.10 (Heat‑treatable steels); 77.140.20 (Stainless steels); 77.140.70 (Steel profiles).
• Edition / version: 2016 edition (with Amendment 1:2018).
• Number of pages: Approximately 25 pages (2016 edition).

Scope

Applies to low‑alloy steels for machine structural use manufactured by hot rolling, hot forging and hot extruding. The standard is intended for products supplied for subsequent processing (forging, machining, heat treatment, etc.) and generally having a uniform cross‑section. It explicitly excludes steel tubes (covered by other JIS standards). The scope includes grade classification, chemical composition limits, required mechanical properties, dimensional and surface conditions, test methods, inspection and marking, plus annexes with additional manufacturing and quality requirements.

Key topics and requirements

• Grade classification and symbol system for low‑alloy steel grades commonly used in machine components (e.g., SCM series grades and similar designations).
• Specified ranges and limits for chemical composition for each grade (elements such as C, Si, Mn, Cr, Mo, Ni, etc.).
• Mechanical property requirements including tensile strength, yield strength, elongation and impact energy where applicable, and heat‑treatment guidance.
• Manufacturing method requirements (hot rolling, hot forging, hot extrusion) and related quality controls; Annexes provide special provisions for extruded sections and for cold‑rolled plates/sheets where referenced.
• Dimensional tolerances, permitted shapes and surface condition criteria for supplied products.
• Required tests and inspection procedures: chemical analysis, mechanical testing, non‑destructive tests where specified, sampling and acceptance criteria.
• Marking, documentation and inspection/reporting requirements for traceability and conformity.
• Normative references and alignment/modification notes relative to corresponding ISO standards (for example ISO 683 series on heat‑treatable and alloy steels).

Typical use and users

Used by material engineers, steel producers, forging and extrusion manufacturers, procurement and quality assurance teams, and OEMs in machine building, automotive components, power transmission and similar mechanical engineering sectors. Typical applications include shafts, gears, spindles, axles and other machined or forged parts that require controlled alloying, heat treatment and mechanical properties.

Related standards

Closely related JIS and international standards include: JIS G 4051 (carbon steels for machine structural use), JIS G 4052 (structural steels with specified hardenability bands), JIS G 3441 (alloy steel tubes for machine purposes), JIS G 3191 / G 3192 (dimensions and permissible variations of bars, sections and plates), and the ISO 683 series (heat‑treatable and alloy steels parts 1–5). The 2016 edition revises and consolidates material previously covered by older JIS documents and has been superseded by the JIS G 4053:2023 edition.

Keywords

JIS G 4053, low‑alloy steels, machine structural use, SCM grades, hot rolling, hot forging, hot extrusion, chemical composition, mechanical properties, heat‑treatable steels, dimensional tolerances, material specification, JSA, JIS.

FAQ

Q: What is this standard?

A: JIS G 4053:2016 is the Japanese Industrial Standard that specifies requirements for low‑alloy steels intended for machine structural use when produced by hot rolling, hot forging or hot extrusion.

Q: What does it cover?

A: It covers grade classification and symbols, chemical composition limits, mechanical property requirements, dimensional and surface conditions, testing and inspection methods, marking and reporting, plus annexes with additional manufacturing and quality requirements. It excludes steel tubes.

Q: Who typically uses it?

A: Steel mills, forging and extrusion shops, material and design engineers, procurement and QA/QC personnel, and machine‑building manufacturers who need to specify or verify low‑alloy steel materials for parts and components.

Q: Is it current or superseded?

A: The 2016 edition (with Amendment 1:2018) has been superseded by a later revision published on 22 May 2023. For new procurements and compliance, consult the 2023 edition (JIS G 4053:2023).

Q: Is it part of a series?

A: Yes. JIS G 4053 is part of a set of JIS documents covering steels for machine structural use (including JIS G 4051, G 4052, and related G‑series standards) and maps to international standards such as the ISO 683 series for heat‑treatable and alloy steels.

Q: What are the key keywords?

A: Low‑alloy steel, machine structural, SCM, hot‑rolled, hot‑forged, hot‑extruded, chemical composition, mechanical properties, heat‑treatable steels, JIS G 4053.