High Carbon Steel Wire Rod 8mm Coil for Industrial Use
High grade carbon steel wire rod in coil, engineered for PC strand, spring wire manufacturing, tire cord, and high-strength industrial wire applications.
Grade: 82B, SWRH 82A/82B — High Carbon Steel
Diameter: 8mm (available range 5.5mm – 14mm)
Heat Treatment: Annealed / Patented / Spheroidized
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Specification
High carbon wire rod grades such as 82B and SWRH 82A/82B are specified for applications requiring high tensile strength, wear resistance, and fatigue endurance after drawing and stranding.
| WIRE ROD — High Carbon Steel Wire Rod 8mm Coil for Industrial Use |
|---|
| Material Grade | 82B, SWRH 82A/82B — High Carbon Steel |
| Standard Diameter | 8mm (available range 5.5mm – 14mm) |
| 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 — High Carbon Grades (Reference)
Reference values per applicable standard. Actual mill certificate values available on request.
| Grade | C % | Mn % | Si % | P % max | S % max |
|---|
| 82B / SWRH 82A | 0.10 max | 0.30 – 0.50 | 0.10 max | 0.030 | 0.035 |
Mechanical Properties — High Carbon Wire Rod
Typical ranges. Final properties depend on diameter and heat treatment condition.
| Grade | Tensile Strength (MPa) | Yield Strength (MPa) | Elongation (%) |
|---|
| 82B / SWRH 82A | 340 – 450 | 220 – 290 | 18 – 28 |
Key Product Features
High carbon wire rod requires precise control during steelmaking and rolling to achieve the strength, microstructure, and surface quality demanded by critical end uses.
Controlled Hot Rolling for High Carbon
Feature: High carbon grades are hot rolled with tighter temperature control to manage the as-rolled microstructure and decarburization depth.
Advantage: Controlled rolling reduces center segregation and produces a refined pearlite structure suitable for patenting and drawing.
Benefit: Delivers the consistent drawability and tensile development needed for PC strand and spring wire production.
Optimized Stelmor Cooling
Feature: Stelmor-type controlled cooling is tuned for high carbon grades to avoid martensite formation and manage scale composition.
Advantage: Proper cooling produces a ferrite-pearlite microstructure with limited transformation stress, reducing the risk of internal cracking during subsequent patenting.
Benefit: Supports the buyer's heat treatment process by providing a predictable starting structure, reducing energy consumption and process variation.
Stringent Surface Standards
Feature: Surface defects are minimized through billet grinding, careful pass design, and inline inspection during rolling of high carbon grades.
Advantage: A defect-free rod surface is essential for high-speed drawing at high reduction ratios where surface flaws cause immediate breakage.
Benefit: Lowers the buyer's breakage rate during strand production and improves overall manufacturing yield.
Protected Coil Handling
Feature: High carbon coils are compacted, banded with steel straps, and wrapped when required to protect the surface during transit and storage.
Advantage: Protected packaging prevents surface damage and corrosion that could initiate cracks during high-reduction drawing.
Benefit: Ensures the rod arrives in condition ready for the buyer's drawing and heat treatment processes without additional surface preparation.
Applications
High carbon wire rod grades are essential for manufacturing high-strength wire products where tensile performance and fatigue resistance are critical.
PC Strand & Prestressed Wire
High carbon wire rod is drawn, stranded, and stress-relieved to produce prestressed concrete strand for bridges, railway sleepers, high-rise buildings, and precast elements.
Spring Wire & Tire Cord
High carbon wire rod is drawn and optionally heat treated to produce spring wire for automotive suspension, industrial springs, and tire cord reinforcement.
High-Strength Rope & Cable
Drawn high carbon wire is used in the manufacture of steel wire ropes for mining, hoisting, elevator cables, and bridge suspension cables requiring high fatigue life.
Manufacturing & Quality
Our high carbon wire rod operations span billet selection through hot rolling, controlled cooling, and coil finishing — with 30 years of steel industry experience behind every shipment.
Quality control measures include chemical analysis of incoming billets, dimensional monitoring during rolling, surface defect scanning, and tensile testing of finished coils. Pre-production samples and final inspection are standard procedure.
We handle both trial quantities from 5 tons and full container loads with flexible scheduling.
Packing and Delivery
High carbon wire rod coils are compressed, secured with steel bands, and prepared for container or flat-rack loading. Moisture-protective wrapping is available for high-humidity shipping routes.
Each coil is tagged with heat number, grade, diameter, net weight, and production date. Coil weight ranges from 800 kg to 2,000 kg depending on 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 makes high carbon wire rod different from low carbon?
High carbon wire rod (typically 0.45%–0.85% C) offers much higher tensile strength after drawing, making it suitable for PC strand, spring wire, and tire cord. It requires more careful handling and heat treatment compared to low carbon grades.
What grades of high carbon wire rod do you supply?
We supply 82B, SWRH 82A, SWRH 82B, and related high carbon grades. Contact us with your specific grade and mechanical property requirements.
Do you offer patented or annealed high carbon wire rod?
Yes. High carbon wire rod can be supplied in hot rolled condition or with post-rolling heat treatment such as patenting or spheroidized annealing depending on the end use.
What diameter range is available in high carbon grades?
High carbon wire rod is available from 5.5mm up to 14mm diameter in standard coil form. Custom dimension requests are evaluated case by case.
How do you ensure surface quality on high carbon grades?
Surface quality begins with billet conditioning, continues through optimized roll pass design, and is verified by inline and final inspection. Surface defects are especially critical in high carbon grades and receive focused attention.
Request a Quotation
High carbon wire rod selection directly affects the strength, consistency, and reliability of your finished wire products. We can provide material that supports your drawing, patenting, and stranding processes.
Please provide for quotation: Grade, diameter, quantity, heat treatment requirement, destination port, and test certification specifications.
