Steel wire is supplied in many different grades, each defined by international standards and specific material properties. Selecting the correct steel grade is essential for performance, durability and process reliability in industrial applications.
This overview explains commonly used steel grades and international standards, with a practical focus on wire products.
Steel grades for wire applications
Unalloyed carbon steel
Unalloyed carbon steels are widely used for general wire applications. Their properties depend primarily on carbon content, which influences tensile strength, ductility and formability.
These steels are commonly specified under European standards and are suitable for cold drawing and further processing.
Typical characteristics:
good formability
predictable mechanical behaviour
suitable for large-volume applications
Typical uses:
baling wire
binding wire
general industrial wire
Low-carbon & medium-carbon steel
Low- and medium-carbon steel grades are used where a balance between strength and flexibility is required.
According to EN standards, these steels are classified based on chemical composition and mechanical properties, making them suitable for controlled industrial applications.
Typical uses:
mechanical wire applications
construction-related wire products
technical wire requiring defined strength levels
Stainless steel
Stainless steel wire is defined by the presence of chromium, which provides corrosion resistance. Depending on the alloy composition, additional elements such as nickel or molybdenum may be added to improve mechanical strength and resistance to aggressive environments.
Typical characteristics:
corrosion resistance
suitability for industrial and hygienic environments
stable mechanical properties
Typical uses:
industrial wire applications
environments exposed to moisture or chemicals
technical installations
International steel standards
EN and DIN standards
European steel grades are defined by EN standards, many of which are based on former DIN classifications. These standards specify chemical composition, mechanical properties and dimensional tolerances.
For wire products, EN standards ensure consistency in processing and performance across industrial applications.
ASTM standards
ASTM standards define steel grades commonly used in international trade. These standards are frequently required for export-oriented projects or applications aligned with American specifications.
ISO standards
ISO standards provide internationally recognised guidelines for material classification, testing and quality control, supporting compatibility between different markets and industries.
Steel grades and standards overview
The table below provides an overview of commonly used steel grades and corresponding international standards for wire applications.
STEEL GRADE | test | test | STANDARD | test | DESCRIPTION |
C4 | EN 10016-2 | Low carbon steel, suitable for cold forming and general wire applications | |||
C7 | EN 10016-2 | Unalloyed steel for moderate strength wire products | |||
C10 | EN 10016-2 | Low carbon steel for drawing and bending applications | |||
C15 | EN 10016-2 | Carbon steel with increased strength for technical wire use | |||
C45 | EN 10083-2 | Medium carbon steel, suitable for higher tensile applications | |||
1.4301 | EN 10088-3 | Austenitic stainless steel with good corrosion resistance | |||
1.4401 | EN 10088-3 | Stainless steel with improved resistance to corrosion and chemicals | |||
C67S | EN 10132-4 | High carbon spring steel for dynamic load applications | |||
C75S | EN 10132-4 | Spring steel with high tensile strength and fatigue resistance |
Typical applications in wire products
The selection of steel grade and applicable standard directly affects wire performance in practice. At Metalwire, steel grades are matched to application requirements such as strength, flexibility, corrosion resistance and processing conditions.
Relevant product categories include:
spring steel wire
Selecting the appropriate steel grade
Choosing the correct steel grade depends on:
required mechanical properties
environmental exposure
applicable standards and certifications
processing and end-use conditions
Metalwire supports customers in selecting wire products that meet both technical and regulatory requirements.
Contact
Looking for wire supplied according to a specific steel grade or international standard?
Contact Metalwire for technical advice or product availability.
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