ISO 8458-3:2002 PDF

Steel wire for mechanical springs — Part 3: Oil-hardened and tempered wire

Title (English):

ISO 8458-3:2002

Steel wire for mechanical springs — Part 3: Oil-hardened and tempered wire

Document status:: Withdrawn
Format:: Electronic (PDF)
Number of pages:: 7
Publication date:: October 25, 2002
Edition:: ISO IS 8458 edition 2 version 1
ICS:: 77.140.25

Document language:

enru

Delivery time:1–7 days

Price:120 €

Description (English):

ISO 8458-3 specifies requirements for oil-hardened and tempered carbon and low alloy steel wire, for the manufacture of mechanical springs for static duty and dynamic duty applications, complying with the general requirements of ISO 8458-1.

Technical details

Technical committee: ISO/TC 17/SC 17 - Steel wire rod and wire products
SKU: ISO 8458-3:2002

Abstract

Overview

ISO 8458-3:2002 - "Steel wire for mechanical springs - Part 3: Oil‑hardened and tempered wire" specifies technical and testing requirements for oil‑quenched and tempered carbon and low‑alloy spring wire. It applies to wire intended for manufacture of mechanical springs used in both static duty and dynamic duty applications, and it complements the general requirements of ISO 8458-1.

Key topics and requirements

Scope and classification
- Covers oil‑hardened and tempered spring wire grades for static (FD), medium fatigue (TD) and high fatigue/dynamic (VD) service. Variants include CrV and SiCr alloy grades.
- Diameter ranges typically span about 0.50 mm to 17.00 mm, with lower ranges for TD/VD grades (commonly up to 10 mm for some grades).
Chemical composition
- Defines heat analysis limits and permissible product deviations for C, Si, Mn, P, S, Cr, V, Cu (see standard for full tables).
Mechanical properties
- Specifies tensile strength and reduction of area ranges by grade and diameter (tables provide precise N/mm or MPa ranges). Tolerance of tensile strength within a coil is limited (e.g., VD: 50 N/mm).
Surface quality and decarburization
- Limits for surface discontinuities and permissible decarburization depths are defined by grade and diameter.
- Eddy‑current inline testing is mandatory for VD grades (optional for TD); non‑metallic inclusion limits for VD are checked per ISO 4967.
Technological tests
- Wrapping, torsion, bend and coiling tests are specified with size ranges and acceptance criteria (e.g., torsion test applied for nominal diameters 0.70–6.00 mm using a gauge length of 100 diameters).
- Test methods, mandatory vs optional tests and sampling plans (production analysis, tensile testing frequency, sample counts) are summarized in the standard.

Applications

Manufacturing of mechanical springs across industries:
- Automotive valve springs and high‑fatigue components (VD grades)
- General-purpose springs for static loads (FD grades)
- Industrial and precision springs requiring controlled fatigue and surface integrity
Useful where controlled tensile properties, surface condition and fatigue life are critical.

Who should use this standard

Spring designers and OEMs, spring‑wire producers, heat‑treatment shops, quality and test laboratories, and procurement/specification engineers who need consistent material and test criteria for oil‑hardened and tempered spring wire.

Related standards

ISO 8458-1 - General requirements for steel wire for mechanical springs
ISO 4967 - Non‑metallic inclusion assessment (micrographic method)

Use ISO 8458-3 when you need standardized chemical, mechanical, surface and testing requirements for oil‑quenched and tempered spring wire to ensure reliable spring performance under static and dynamic service.

Related standards

Mentioned in the description and other ISO standards

Abstract

Overview

Key topics and requirements

Scope and classification
- Covers oil‑hardened and tempered spring wire grades for static (FD), medium fatigue (TD) and high fatigue/dynamic (VD) service. Variants include CrV and SiCr alloy grades.
- Diameter ranges typically span about 0.50 mm to 17.00 mm, with lower ranges for TD/VD grades (commonly up to 10 mm for some grades).
Chemical composition
- Defines heat analysis limits and permissible product deviations for C, Si, Mn, P, S, Cr, V, Cu (see standard for full tables).
Mechanical properties
- Specifies tensile strength and reduction of area ranges by grade and diameter (tables provide precise N/mm or MPa ranges). Tolerance of tensile strength within a coil is limited (e.g., VD: 50 N/mm).
Surface quality and decarburization
- Limits for surface discontinuities and permissible decarburization depths are defined by grade and diameter.
- Eddy‑current inline testing is mandatory for VD grades (optional for TD); non‑metallic inclusion limits for VD are checked per ISO 4967.
Technological tests
- Wrapping, torsion, bend and coiling tests are specified with size ranges and acceptance criteria (e.g., torsion test applied for nominal diameters 0.70–6.00 mm using a gauge length of 100 diameters).
- Test methods, mandatory vs optional tests and sampling plans (production analysis, tensile testing frequency, sample counts) are summarized in the standard.

Applications

Manufacturing of mechanical springs across industries:
- Automotive valve springs and high‑fatigue components (VD grades)
- General-purpose springs for static loads (FD grades)
- Industrial and precision springs requiring controlled fatigue and surface integrity
Useful where controlled tensile properties, surface condition and fatigue life are critical.

Who should use this standard

Spring designers and OEMs, spring‑wire producers, heat‑treatment shops, quality and test laboratories, and procurement/specification engineers who need consistent material and test criteria for oil‑hardened and tempered spring wire.

Related standards

ISO 8458-1 - General requirements for steel wire for mechanical springs
ISO 4967 - Non‑metallic inclusion assessment (micrographic method)

ISO 8458-3:2002 PDF

Technical details

Abstract

Overview

Key topics and requirements

Applications

Who should use this standard

Related standards

Related standards

Abstract

Overview

Key topics and requirements

Applications

Who should use this standard

Related standards

Related standards

Steel wire for mechanical springs — Part 1: General requirements

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