Product Name: Square Steel Bar (Solid Square Bars)
Introduction
Square Steel Bars are solid, four-sided steel sections produced by hot rolling, forging or cold drawing. They offer exceptional uniformity in cross-section, good machinability and predictable mechanical properties, making them a go-to raw material for structural components, machined parts, fasteners, tools and decorative metalwork. Available in carbon, alloy and stainless grades, square bars are supplied in hot-finished, cold-drawn or precision ground conditions to match end-use requirements.
Typical Specifications
Standards: ASTM A108 / A29 (carbon & alloy bars), EN 10083 / EN 10088 (stainless), JIS standards on request.
Materials / Grades: Mild/carbon (e.g., S235, C45), low-alloy (e.g., 20MnV, 42CrMo), stainless (304/304L, 316/316L), tool steels on request.
Production Methods: Hot rolling, forging, cold drawing, precision grinding.
Section Sizes (across flats): 5 mm – 200 mm (standard); custom sizes available.
Length: Standard 1.0 m – 6.0 m; cut-to-length available.
Surface Finish: Hot-rolled (mill finish), cold-drawn (improved tolerances), precision ground (tight OD tolerance, fine surface).
Tolerances: Hot-rolled ±0.5–1.5 mm; cold-drawn ±0.1–0.5 mm; ground to customer spec.
Mechanical Properties (typical ranges):
Yield strength (mild/carbon): ~235 MPa (S235) up to ~350–700 MPa for alloy/quenched & tempered grades.
Tensile strength: ~360–700 MPa depending on grade and heat treatment.
Elongation: ≥12–25% depending on material and condition.
Features & Advantages
Versatile Material Options: Choose from low-cost mild steels to high-performance alloy or stainless options for corrosion and temperature resistance.
Good Machinability & Workability: Cold-drawn and certain alloy grades machine and form well for precision components.
Uniform Geometry: Square section simplifies fixturing, welding and assembly compared with irregular stock.
Value-Added Finishes: Ground, polished or passivated finishes available to meet aesthetic or functional needs.
Heat-Treatment & Hardening: Quench & temper, case hardening or annealing services available for strength or wear requirements.
Applications
Structural supports, braces and frames
Shafts, keys, pins and machine parts
Fasteners, studs and connector blanks
Tooling, jigs and fixtures
Decorative architectural elements and furniture legs
Forging and cold-forming blanks
Packaging & Delivery
Bundling: Strapped bundles separated with timber/polymer spacers to avoid abrasion.
End Protection: Plastic caps or taped ends for precision ground bars.
Surface Protection: Light oiling, VCI wrap or shrink-wrap available for long-term storage or export.
Lead Time: Stock sizes typically ship within 3–10 days; custom sizes, special alloys or heat-treated orders 2–6 weeks depending on scope.
Quality Control & Testing
Mill Test Certificates (MTC) with chemical analysis and mechanical test results.
Dimensional inspection, surface quality checks and straightness verification.
NDT (UT/MT/VT) or hardness testing available on request for critical parts.
Traceability from melt to finished bar on request.
Why Choose Our Square Steel Bars?
Broad material portfolio (carbon, alloy, stainless) to fit cost and performance needs.
Precision finishing (cold-drawn, ground) for tight tolerance machining and assembly.
Full QA documentation and optional third-party inspection for critical supply chains.
Value-added services: cut-to-length, heat treatment, grinding, chamfering and protective coatings.
How to Order / Technical Inputs Needed
Please provide: grade/material, across-flats size, length(s), required finish (hot-rolled/cold-drawn/ground), quantity, any heat treatment or testing requirements, and delivery schedule. We'll reply with availability, lead time and a competitive quotation.
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