Alloy Steel Wire Rod for Construction Applications
Prime hot rolled alloy steel wire rod in coil, designed for construction reinforcement, industrial wire, and high-strength fastening applications.
Grades: SAE 1018, 10B21, 10B38, CHQ, St37
Diameter: 5.5mm – 12.5mm Multiple Sizes
Surface: Black / Bright, Hot Rolled Condition
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Specification
Alloy and special-grade steel wire rods are selected for applications requiring specific mechanical properties beyond standard low carbon grades, including cold heading, fasteners, and construction reinforcement.
| WIRE ROD — Alloy Steel Wire Rod for Construction Applications |
|---|
| Material Grade | Grades: SAE 1018, 10B21, 10B38, CHQ, St37 |
| Standard Diameter | 5.5mm – 12.5mm Multiple Sizes |
| Length / Coil Form | Continuous coil, length as per customer requirement |
| Tolerance | ±0.01mm – ±0.05mm |
| Surface Finish | Bright, black (hot rolled with scale) |
| Heat Treatment | As rolled / Annealed / Spheroidized (per grade) |
| Payment Term | 30% TT Advance + 70% Balance |
| Applicable Standard | ASTM A510 / GB/T 701 and related international specs |
Chemical Composition — Reference Ranges
Reference values per applicable standard. Actual mill certificate values available on request.
| Grade | C % | Mn % | Si % | P % max | S % max |
|---|
| SAE 1018 | 0.10 max | 0.30 – 0.50 | 0.10 max | 0.030 | 0.035 |
Mechanical Properties — Reference Values
Typical ranges. Final properties depend on diameter and heat treatment condition.
| Grade | Tensile Strength (MPa) | Yield Strength (MPa) | Elongation (%) |
|---|
| SAE 1018 | 340 – 450 | 220 – 290 | 18 – 28 |
Key Product Features
Alloy and medium carbon wire rods are produced with tighter process control to deliver the specific mechanical response required by cold heading, fastening, and structural applications.
Controlled Dimensional Quality
Feature: Wire rod is hot rolled to precise circular cross-section with consistent diameter control suitable for cold heading and fastener-grade wire processing.
Advantage: Dimensional consistency allows the rod to feed reliably through multi-stage cold heading dies without jamming or misalignment.
Benefit: Helps fastener manufacturers achieve consistent head formation and thread rolling with fewer die adjustments and less scrap.
Tuned Cooling for Formability
Feature: Cooling rates on the Stelmor conveyor are adjusted per grade to produce a microstructure optimized for cold forming or subsequent spheroidizing.
Advantage: The tuned cooling profile reduces the need for intermediate softening treatments in many cold heading applications.
Benefit: Saves the buyer process time and energy while enabling higher forming speeds and lower tooling wear.
Inspection-Driven Surface Control
Feature: Billet surface conditioning and optimized rolling practices keep surface defects below the thresholds required for cold heading and exposed fastener applications.
Advantage: A clean surface prevents surface-originated cracking during cold heading and thread rolling processes.
Benefit: Reduces the buyer's risk of fastener rejection due to surface-related defects in finished products.
Industrial Coil Preparation
Feature: Coils are compacted, steel-banded, and tagged with full traceability data including heat analysis, grade, and dimensions.
Advantage: Standardized coil identification speeds up receiving inspection and helps match material to the correct production order.
Benefit: Supports the buyer's material tracking system and reduces handling errors in multi-grade production environments.
Applications
Alloy and medium carbon wire rod grades serve demanding applications where strength, hardenability, and consistent forming behavior are required.
Cold Heading & Fastener Production
Grades like 10B21, SAE 1018, and CHQ wire rod are drawn and cold headed to produce screws, bolts, nuts, rivets, and other automotive and construction fasteners.
Construction & Structural Use
Wire rod for construction applications includes material for reinforcement mesh, tie wire, prestressed concrete products, and structural steel wire components.
Welding Electrode & Wire
Specific grades of wire rod are drawn, straightened, cut, and coated to produce manual arc welding electrodes and MIG/TIG welding wires for structural and pipe welding applications.
Manufacturing & Quality
With three decades in the steel trade and supporting production capabilities, we supply alloy and special-grade wire rods with consistent quality across hot rolling, controlled cooling, and coil finishing stages.
Each production lot is tracked from billet to finished coil, with in-process checks covering chemistry verification, dimensional gauging, surface inspection, and mechanical property sampling. Customer pre-production samples are provided before mass production.
We accommodate trial quantities starting from 5 tons and maintain flexible scheduling for regular container-volume orders.
Packing and Delivery
Alloy steel wire rod coils are compressed, strapped with a minimum of four steel bands, and arranged for container, flat-rack, or break-bulk loading. Steel strip bundling and wooden pallet packing are available as standard.
Coil tags show heat number, grade designation, diameter, net weight, and production date. Coil weight typically ranges from 800 kg to 2,000 kg depending on the ordered diameter.
Quality Certificate
Our products are manufactured and tested in accordance with applicable ASTM, API, BS, and GB/T standards.
Mill Test Certificates (MTC) documenting chemical composition, mechanical properties, and dimensional results are provided with each shipment. Third-party inspection services are available upon request.
FAQ
What applications require alloy or special-grade wire rod?
Cold heading fasteners (bolts, screws, nuts), welding electrodes, prestressed concrete products, and structural reinforcement mesh often require specific non-standard grades with tailored mechanical properties.
What is CHQ wire rod?
CHQ stands for Cold Heading Quality wire rod. These grades have controlled surface quality, internal soundness, and chemical composition optimized for cold forming into fasteners without cracking.
Can you supply spheroidized-annealed alloy wire rod?
Yes. For cold heading applications requiring maximum formability, we can arrange spheroidized annealing to soften the material before drawing and heading.
Do you offer custom chemical compositions?
We work with partner mills that can produce custom chemistry ranges for qualified quantity orders. Contact us with your target composition and volume for feasibility review.
What inspection options are available?
Standard shipments include a mill certificate. Third-party inspection by SGS, BV, Intertek or equivalent can be arranged. Dimensional, surface, and mechanical testing can be verified before shipment.
Request a Quotation
The right alloy or special-grade wire rod specification determines fastener quality and forming efficiency. We supply material that supports reliable cold heading and consistent production results.
Please provide for quotation: Target grade, diameter, quantity, destination port, required certifications, and any special forming or heat treatment specifications.
