Steel Leg A: length 1200mm ±2mm, weight 18.6 kg/m

Component Specifications

Definition

Steel Leg A is a precision-engineered structural component fabricated from hot-rolled steel angle bar, typically forming the vertical support members in machinery frames. It functions as a critical load-bearing element that transfers operational forces from upper machine structures to the foundation while maintaining dimensional stability under dynamic loading conditions. The component features standardized mounting interfaces for secure attachment to both machine superstructure and base plates, with optimized geometry to minimize deflection while maximizing strength-to-weight ratio.

Working Principle

Steel Leg A operates on the principle of compressive load transfer through vertical column action, where axial forces are transmitted along the length of the angle bar section. The L-shaped cross-section provides enhanced resistance to bending moments in multiple directions, while the material's yield strength determines the maximum sustainable load before plastic deformation occurs. The component maintains structural integrity through proper force distribution across its cross-sectional area, with stress concentrations mitigated through radiused corners and uniform material thickness.

Materials

ASTM A36 hot-rolled structural steel angle bar, yield strength: 250 MPa minimum, ultimate tensile strength: 400-550 MPa, carbon content: 0.26% max, manganese: 0.80-1.20%, phosphorus: 0.04% max, sulfur: 0.05% max. Surface finish: mill scale or pickled and oiled.

Technical Parameters

Parameter	Typical range	Notes & selection driver
Length	1200mm ±2mm
Weight	18.6 kg/m
Dimensions	L100x100x10mm
Hole Pattern	4x Ø12mm holes at 100mm centers
Surface Area	0.48 m²/m
Section Modulus	34.5 cm³
Moment Of Inertia	172 cm⁴
Flatness Tolerance	1mm per meter
Straightness Tolerance	2mm total length

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 657-1, DIN EN 10056-1, ASTM A36

Parent Products

This component is used in the following industrial products

Structural Steel Angle Bar

Structural steel angle bars are L-shaped hot-rolled steel sections with equal or unequal legs, forming 90-degree angles.

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Engineering Analysis

Risks & Mitigation

Overloading beyond rated capacity
Improper alignment during installation
Corrosion in humid environments
Fatigue failure from cyclic loading
Weld cracking at attachment points

FMEA Triads

Trigger: Excessive operational loads exceeding design limits
Failure: Plastic deformation or buckling of the angle section
Mitigation: Implement load monitoring systems, regular inspection for deformation signs, and strict adherence to maximum load specifications

Trigger: Vibration-induced fatigue at stress concentration points
Failure: Crack initiation and propagation at hole edges or welded joints
Mitigation: Apply radiused edges on cutouts, implement vibration damping mounts, conduct periodic non-destructive testing

Trigger: Galvanic corrosion in dissimilar metal contact
Failure: Section loss and reduced load-bearing capacity
Mitigation: Use insulating gaskets between dissimilar metals, apply protective coatings, implement cathodic protection where applicable

Industrial Ecosystem

Compatible With

Typical Suppliers & Equivalents

Compliance & Inspection

Tolerance

Geometric tolerances per ISO 2768-mK, dimensional tolerances per ISO 13920-B, straightness: 0.1% of length max, flatness: 0.2% of width max

Test Method

Ultrasonic testing for internal defects per ASTM A898, dimensional verification with CMM per ISO 10360, load testing per ISO 7500-1 with 150% design load for 24 hours

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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Manufacturers of Steel Leg A

Manufacturer profiles associated with Steel Leg A.

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Frequently Asked Questions

What is the maximum load capacity of Steel Leg A?

The maximum axial load capacity is 85 kN under static conditions, with a safety factor of 3:1 applied. Dynamic loading capacity depends on vibration frequency and should be calculated using the component's natural frequency of 45 Hz.

Can Steel Leg A be used in corrosive environments?

Standard A36 steel requires protective coating for corrosive environments. For applications with chemical exposure, specify galvanized (ASTM A123) or stainless steel (304/316) alternatives with appropriate material certifications.

What mounting hardware is compatible with Steel Leg A?

Use M12 grade 8.8 bolts with flat washers and spring washers for secure attachment. Torque specifications: 90 Nm for dry threads, 70 Nm for lubricated threads. Always verify bolt length to ensure full thread engagement.

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 Leg A