Steel Base Material: Density 7.85 g/cm³, Elongation ≥22%

Component Specifications

Definition

Steel base material specifically manufactured for structural hollow sections (SHS), which are cold-formed or hot-rolled steel profiles with hollow cross-sections. This material provides the fundamental mechanical properties required for load-bearing applications in machinery frames, structural supports, and industrial equipment. The base steel undergoes controlled chemical composition and thermal processing to achieve optimal strength-to-weight ratios, weldability, and corrosion resistance.

Working Principle

The steel base material serves as the foundational element for structural hollow sections, providing tensile strength, yield strength, and ductility through its metallurgical composition and processing. When formed into hollow sections, the material distributes mechanical stresses efficiently across its cross-section, offering superior bending and torsional resistance compared to solid sections of equivalent weight.

Materials

Carbon steel grades (S235, S275, S355) with controlled carbon content (0.17-0.22%), manganese (0.50-1.60%), and trace elements. May include micro-alloyed grades with vanadium or niobium for enhanced strength. Available in hot-rolled or cold-formed conditions with specified yield strengths from 235 MPa to 460 MPa.

Technical Parameters

Parameter	Typical range	Notes & selection driver
Density	7.85 g/cm³
Elongation	≥22%
Yield Strength	235-460 MPa
Poisson's Ratio	0.3
Young's Modulus	210 GPa
Tensile Strength	360-550 MPa
Thermal Expansion	11.7 × 10⁻⁶/°C

Ranges are indicative industry figures for RFQ preparation, not a supplier commitment. Confirm every value and standard with the legal manufacturer before ordering.

Standards

ISO 10799, ISO 10210, EN 10219, ASTM A500, JIS G3466

Parent Products

This component is used in the following industrial products

Structural Hollow Section Steel

Hollow steel sections used as load-bearing structural elements in construction and engineering.

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Engineering Analysis

Risks & Mitigation

Material inconsistency affecting structural integrity
Improper welding causing heat-affected zone weaknesses
Corrosion in harsh environments
Dimensional variations affecting assembly

FMEA Triads

Trigger: Incorrect chemical composition during steel production
Failure: Reduced mechanical properties and premature failure under load
Mitigation: Implement strict material certification and batch testing per applicable standards

Trigger: Improper storage leading to surface contamination or corrosion
Failure: Reduced weld quality and compromised structural integrity
Mitigation: Maintain controlled storage conditions with proper protection from moisture and contaminants

Trigger: Inadequate quality control during hollow section forming
Failure: Geometric imperfections affecting load distribution and assembly
Mitigation: Implement dimensional inspection protocols and statistical process control

Industrial Ecosystem

Compatible With

Typical Suppliers & Equivalents

Compliance & Inspection

Tolerance

±1.5% on wall thickness, ±0.5% on cross-sectional dimensions per ISO 10799

Test Method

Tensile testing per ISO 6892-1, chemical analysis per ISO 14284, non-destructive testing for defects

Procurement Evaluation Criteria

A practical evidence checklist for RFQ preparation and supplier evaluation.

Technical documentation

Request current drawings, revision history, and a signed specification sheet.

Manufacturing capability

Verify equipment lists, process limits, capacity, and representative production evidence.

Inspection readiness

Confirm test methods, calibrated equipment, sampling plans, and traceable reports.

Supplier transparency

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CNFX does not score or rank suppliers. Buyers must verify all claims and documents with the legal manufacturer before ordering.

Manufacturers of Steel Base Material

Manufacturer profiles associated with Steel Base Material.

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Frequently Asked Questions

What are the main advantages of using steel base material for structural hollow sections?

The material offers excellent strength-to-weight ratio, efficient stress distribution, good weldability, and cost-effectiveness for load-bearing applications in machinery and structures.

How does the steel grade affect the performance of structural hollow sections?

Higher steel grades (S355 vs S235) provide greater yield strength and load capacity but may require different welding procedures and have slightly reduced formability.

What standards govern the quality of steel base material for hollow sections?

Primary standards include ISO 10799, EN 10219 for cold-formed sections, and ASTM A500 for structural tubing, specifying chemical composition, mechanical properties, and dimensional tolerances.

Data Basis

Editorial classification, named public sources where available, and source-reviewed manufacturer records. See the editorial policy.

Preliminary Technical Classification

This page supports structured research, RFQ preparation, and supplier evaluation. It does not replace buyer-led supplier qualification, standards review, or technical approval.

Steel Base Material