baosteel
BAOSTEEL METAL / HIGH-CARBON WIRE ROD

82B High Carbon Steel Wire Rod

SWRH82B · JIS G 3506:2024 · HOT-ROLLED WIRE ROD COILS

C 0.79–0.86%Mn 0.60–0.90%Wire Drawing FeedstockCoil Supply
Controlled-cooling enquiriesHeat and coil traceability
82B / SWRH82B HIGH CARBON

High-carbon wire rod for controlled wire conversion.

Specify 82B wire rod coils with the chemistry, diameter, cooling history and surface quality your drawing process requires. BAOSTEEL METAL coordinates bulk industrial enquiries with heat-traceable documentation and shipment planning.

WhatsAppEmail
Review 82B rod specifications ↓
Real industrial high carbon 82B SWRH82B steel wire rod coils stored beside a wire rod rolling line, natural industrial photograph without labels or text
8 Million MTActual annual steel output across all product categories
1 Million MTCombined regular inventory across the company, not 82B-specific stock
500,000 m²Factory area
1,000+Employees across the company
GRADE OVERVIEW

82B / SWRH82B High Carbon Wire Rod

A specific high-carbon feedstock grade for industrial wire processing and coil-based procurement.

What Is 82B Steel Wire Rod?

82B is a commonly used trade abbreviation for the SWRH82B high-carbon wire rod grade in JIS G 3506:2024. The grade combines approximately 0.8% carbon with a 0.60–0.90% manganese range and is ordered as hot-rolled coiled feedstock for further wire conversion.

  • Primary grade: SWRH82B to the agreed edition of JIS G 3506.
  • Product stage: hot-rolled high-carbon wire rod coils, prior to drawing and finishing.
  • Technical buying focus: chemistry, decarburization, surface condition, cooling practice and drawing characteristics.
  • Potential downstream uses: hard-drawn wire, stranding feed and prestressing-wire processing where the converter separately qualifies its finished product.
Grade naming: Confirm SWRH82B and the exact standard on the purchase order. The shorthand “82B” should not be treated as a universal guarantee of chemistry, tensile condition or finished-wire certification.

82B Procurement Snapshot

Define the wire rod as a raw material for your particular drawing and heat-treatment process.

0.79–0.86% CJIS grade carbon range
0.60–0.90% MnJIS SWRH82B manganese range
Ø5.5–20 mmIndicative enquiry range, not guaranteed stock
Coil DeliveryHeat tags and agreed mass
Close up of tightly wound high carbon SWRH82B hot rolled wire rod loops showing plain uncoated round steel surface in a factory
Buying 82B for drawing or stranding?

Send diameter, intended drawn-wire size, target downstream performance, coil weight and any decarburization or microstructure limits.

TECHNICAL SPECIFICATIONS

82B Steel Wire Rod Specifications

Buy by the specified JIS grade, rolling condition, diameter and test requirements—not by nominal carbon content alone.

ItemProcurement details
Product designation82B high carbon wire rod / SWRH82B (confirm exact grade spelling)
Primary grade standardJIS G 3506:2024, High carbon steel wire rods
Alternative procurement frameworkISO 16120-4:2017 when separately applicable and mutually specified; no automatic grade equivalence
Reference enquiry sizesØ5.5, 6, 6.5, 7, 8, 9, 10, 11, 12, 14, 16, 18, 20 mm; check rolling schedule
FormHot-rolled plain round wire rod in tied coils
Coil dimensionsIndividual coil mass, inside/outside diameter, width and lifting arrangement by quotation
Steel chemistryJIS SWRH82B heat analysis and optional mutually agreed tighter controls
Cooling conditionAs-rolled/controlled-cooled as specified and supported by the producing mill
Surface conditionScale, seams, laps, cracks and permitted defect depth by order
Microstructure and decarburizationSpecify targeted controls and test method for intensive drawing or fatigue-loaded end use
Mechanical testingAs-rolled tensile range only when separately specified, with agreed sample diameter and method
Traceability and documentsMill test report, heat/coil identification, product inspection and agreed logistics files
DIAMETER & THEORETICAL MASS

82B Wire Rod Diameter and Weight Chart

Reference weights for round wire rod. Select actual coil count and permissible unit mass at quotation.

Nominal diameter (mm)Section area (mm²)Theoretical kg/mMass / 1,000 m (kg)Supply status
Ø5.523.760.187186.5Check actual mill availability
Ø628.270.222222.0Check actual mill availability
Ø6.533.180.260260.5Check actual mill availability
Ø738.480.302302.1Check actual mill availability
Ø850.270.395394.6Check actual mill availability
Ø963.620.499499.4Check actual mill availability
Ø1078.540.617616.5Check actual mill availability
Ø1195.030.746746.0Check actual mill availability
Ø12113.100.888887.8Check actual mill availability
Ø14153.941.2081,208.4Check actual mill availability
Ø16201.061.5781,578.3Check actual mill availability
Ø18254.471.9981,997.6Check actual mill availability
Ø20314.162.4662,466.2Check actual mill availability

Theoretical round-section mass uses a reference density of 7,850 kg/m³. Coil net weight is based on actual mill weighing; diameter list is an enquiry guide, not confirmed 82B inventory.

Ø5.5–20 mmIllustrative mill-product size range; confirm production schedule
7,850 kg/m³Nominal density for theoretical weight calculations
Coil-specificMass, dimensions and packaging agreed per confirmed order
COMPOSITION & TRACEABILITY

82B Wire Rod Chemical Composition

SWRH82B chemical limits under JIS G 3506:2024, with optional purchasing controls identified separately.

SWRH82B JIS Chemistry

The composition below is the published SWRH82B grade range in JIS G 3506:2024. Each heat is verified against the agreed order and mill test record.

ElementJIS heat analysis (mass %)Buyer relevance
Carbon (C)0.79–0.86%Higher-carbon plain steel grade
Silicon (Si)0.15–0.35%Specified grade range
Manganese (Mn)0.60–0.90%Distinguishes SWRH82B from lower-Mn SWRH82A
Phosphorus (P)≤0.030%JIS grade heat-analysis limit
Sulfur (S)≤0.030%JIS grade heat-analysis limit
Other elementsAgreed in contractDocument residual elements or tighter controls if drawing quality requires
Tighter limits: Lower P/S values, residual-element limits or narrower carbon bands may be specified commercially where feasible, but they are not automatically included.

Key Chemistry Facts

0.79–0.86Carbon (mass %)
0.60–0.90Manganese (mass %)
≤0.030Each: P and S (mass %)
JIS 2024Current grade edition

82B is selected where a high-carbon pearlitic feedstock is required for subsequent drawing or other controlled conversion processes. The grade chemistry alone does not define the tensile properties of every as-rolled coil.

  • Confirm the melt/heat analysis for all listed elements.
  • State whether segregation, inclusions and surface decarburization need additional inspection.
  • Specify the accepted raw-rod tensile or microstructural condition separately if important to the process.
DRAWING QUALITY

82B Microstructure, Decarburization and Surface Quality

Specify the rod condition, surface integrity and testing plan that suit the wire converter.

Mechanical Properties Are Condition-Dependent

JIS G 3506:2024 specifies the grade chemistry but does not prescribe a universal tensile-strength and elongation pair for SWRH82B. Incoming rod behavior changes with diameter, finishing temperature, controlled cooling and resulting microstructure.

Acceptance topicSpecify at enquiry
As-rolled tensile propertiesAgree any strength/elongation range by diameter, cooling condition and sampling plan.
Pearlite transformationAgree metallographic evaluation or suitable drawing-structure criteria where needed.
Surface decarburizationDefine measurement method and permitted depth for the downstream application.
Surface defectsInspect cracks, seams, laps, scabs and rolling scale under agreed acceptance criteria.
Inclusions and segregationSet any additional cleanliness or centerline segregation controls needed for severe drawing.
Coil-to-coil consistencyReview coil head/tail, ovality and relevant property spread as specified.
For demanding wire drawing, agree testing criteria before manufacture. Finished prestressing wire and strand are governed by their own final-product specifications and validation.

Rod, Drawn Wire and Finished Strand

  • 82B hot-rolled rod: coiled starting material with agreed JIS chemistry and quality.
  • Drawn wire: separate conversion stage; reduction and processing determine delivered properties.
  • Patented or heat-treated wire: properties depend on additional thermal processing.
  • Prestressing wire or strand: independent product testing, relaxation limits and project acceptance.
  • Wire rope feedstock: manufacturing and final rope requirements must be qualified separately.
Avoid treating the finished strand designation, such as a final strength class, as a property guaranteed on the hot-rolled 82B rod.
COIL FORMS

82B Wire Rod Supply Conditions

Delivery is agreed by coil dimensions, rolling route, cooling condition and inspection scope.

82B high carbon hot rolled steel wire rod coil tied in industrial bands in a real steel warehouse

As-Rolled High-Carbon Coils

Plain hot-rolled starting material. Confirm chemistry, diameter, coil mass and surface requirements.

High carbon 82B steel wire rod passing through a real rolling mill controlled cooling conveyor without any markings

Controlled-Cooling Delivery

Where supported and ordered, define cooling-related microstructure or tensile targets for the drawing operation.

Industrial high carbon steel wire rod coils next to a real wire drawing and stranding production line

Prestressing Wire Feedstock

Potential incoming raw material for qualified wire or strand manufacture. Finished prestressing products require independent acceptance.

Need tight drawing-process acceptance?

Share the final wire/strand application, incoming tensile targets, permissible decarburization and surface defect requirements.

GRADE SELECTION

82B vs SWRH82A, SAE 1080 and SAE 1008

Use grade chemistry as a starting point, then qualify the correct drawing and end-product route.

GradeReference standardCarbon (mass %)Manganese (mass %)Material-selection note
SWRH82B / 82BJIS G 3506:20240.79–0.86% C0.60–0.90% MnHigh-carbon wire-rod chemistry; project-specific drawing quality
SWRH82AJIS G 3506:20240.79–0.86% C0.30–0.60% MnSame JIS carbon range; lower manganese versus 82B
SAE 1080SAE J4030.75–0.88% CTypically 0.60–0.90% MnRelated high-carbon SAE grade, not an automatic substitution
SAE 1008SAE J403≤0.10% CTypically 0.30–0.50% MnLow-carbon drawing rod for different processing needs

Comparison is based on published grade references; other chemistry, process conditions and delivery requirements differ. Final substitutions need customer or engineer approval.

Why “82B” and “SAE 1080” need separate approval

Both are high-carbon grades, but their specified carbon windows and governing documents differ. Incoming mechanical conditions, inclusion cleanliness and drawing results also depend on mill practices. Review the actual certificate and wire-conversion qualification before replacing either grade.

WIRE CONVERSION

82B Wire Rod Drawing and Processing Route

Technical coordination starts with the final wire type and required reduction path.

Real industrial high carbon steel wire drawing or prestressing wire preparation line with large feed coils and steel processing machinery
DOWNSTREAM CONVERSION

From 82B Rod to High-Strength Wire

82B coil is introduced to downstream wire conversion. Depending on the converter and final specification, drawing may involve descaling, surface preparation, patenting, further reduction, stranding and heat/stress treatment.

  • Receive and verify wire rod heat, diameter, coil tags and agreed quality tests.
  • Prepare the surface and remove scale for the chosen drawing process.
  • Apply controlled drawing reductions and intermediate treatment as engineered.
  • Control individual wire quality before making strand, rope or other finished products.
  • Perform final-product testing to the separately specified wire or strand standard.
Process stages are illustrative downstream routes; BAOSTEEL METAL supplies the defined wire rod material unless additional services are explicitly quoted.
INDUSTRIAL APPLICATIONS

82B High Carbon Wire Rod Applications

Common high-carbon conversion routes depend on the quality plan and final product specification.

Industrial high carbon steel wire production with spooled steel strands, steel wire ropes and plain steel wire coils in a real factory
01 / PC WIRE

Prestressing Wire Feedstock

Potential starting material for qualified high-carbon prestressing-wire manufacturing.

02 / PC STRAND

Prestressing Strand Wire Feed

Wire conversion and stranding plants may evaluate 82B against their own finished-strand requirements.

03 / HARD DRAWN

Hard-Drawn Industrial Wire

For suitable high-carbon drawing applications with agreed surface and microstructure controls.

04 / GALVANIZED WIRE

Stranded / Galvanized Wire Feed

Potential input into wires later galvanized or stranded under their specific production standard.

05 / WIRE ROPE

Wire-Rope Conversion Feedstock

High-carbon starting material for qualified wire-rope manufacturing workflows.

06 / INDUSTRIAL WIRE

Specialized Processed Wire

Project-specific wire processing where the converter confirms material compatibility.

Applications describe possible downstream conversion of the 82B feedstock. A finished prestressing strand, wire or wire rope requires its own specification, inspections and approvals.

WHY BAOSTEEL METAL

High-Carbon Wire Rod Sourcing with Practical Controls

Real group-wide industrial capability, with product-specific availability verified per enquiry.

01 / SCALE

Company-Wide Output

8 million MT of annual steel output across product families, with any 82B supply aligned to the actual mill rolling program.

02 / SUPPLY

Inventory Coordination

1 million MT regular combined company inventory; 82B grade/diameter availability needs a separate confirmed stock or production check.

03 / QUALITY

Clear Material Acceptance

Set the standard, heat analysis, surface and additional quality controls before procurement and inspection.

04 / EXPORT

Coil Shipment Planning

Coordinate net coil mass, ties, lifting limits, material tags and documents for the destination wire processor.

CALCULATE TONNAGE

82B Wire Rod Weight and Coil Calculator

Estimate theoretical running-length mass or total nominal coil tonnage.

01 / Rod Length-Based Theoretical Weight

Enter a nominal diameter and total running length to estimate round-section steel mass.

Theoretical steel mass— MT
— kg/mReference unit mass
— kgTotal theoretical kilograms

Formula: π/4 × d² × 0.00785 kg/m, d in millimetres, reference density 7,850 kg/m³. It does not replace the measured coil mass.

02 / Coil Tonnage Calculator

Calculate procurement mass from the nominal tonnage per coil stated by the buyer or mill.

Estimated order tonnage— MT
— kgNominal total kilograms
— coilsCoil count

Actual net coil mass, permitted variation and shipment mass are based on the producing mill’s weighing and purchase documents.

Request 82B wire rod by mass and drawing grade

Provide quantity, diameter mix, coil weight range and the final-wire application for a detailed commercial quotation.

MILL PROCESS

82B Wire Rod Production and Controlled Cooling

Heat chemistry, rolling dimensions and process-defined incoming structure are key to repeat drawing performance.

Industrial steel wire rod rolling mill conveyor feeding freshly rolled high carbon wire rod to a cooling line
STEEL MILL ROUTE

Hot Rolling and Coil Formation

Wire rod production involves grade-specific steelmaking, billet rolling and coil formation. Cooling history strongly affects high-carbon starting structure and performance during later conversion.

  • Control melt and billet chemistry to the confirmed SWRH82B specification.
  • Roll to the agreed nominal diameter and dimensional tolerance.
  • Apply mill-supported cooling practices to the contracted coil condition.
  • Inspect surface condition, chemistry and any additional agreed microstructure or mechanical test.
  • Tie, mark and identify coils for storage, dispatch and traceability.
Actual rolling/cooling equipment and special capabilities must be verified with the producing mill for the order.
SUPPLY & STOCK

82B High Carbon Wire Rod Supply Enquiries

Grade-specific stock and manufacturing lead times require confirmation for each purchase.

82B Availability and Rolling Schedule

Commercial supply depends on the specific mill’s high-carbon rolling program, the requested diameter mix, coil mass and any special cleanliness or inspection controls.

  • Submit the exact JIS grade, diameter mix and annual/spot tonnage.
  • Confirm the requested delivery window based on the real rolling and logistics schedule.
  • Check actual grade-specific available stock separately from the company-wide inventory total.
  • Confirm coil mass range, banding and loading capacity for the receiving plant.
Company-wide inventory is a scale indicator, not a guarantee of immediately available 82B wire rod.

Coils Ready for Logistics Coordination

Clearly identify each coil and batch so incoming wire-processing plants can reconcile shipment, chemistry and any additional acceptance reports.

Stacks of tagged high carbon steel wire rod coils in a real industrial warehouse with clear access lanes and no superimposed graphics

Availability, coil geometry and destination handling constraints are confirmed before a firm quotation.

QUALITY CONTROL

82B Wire Rod Tests and MTC Requirements

Set actual evidence requirements for the specified grade and manufacturing route.

Wire Rod Acceptance and Inspection

  • Heat analysis: JIS C, Si, Mn, P and S with any contract-specific residual limits.
  • Dimensions: diameter, ovality, coil mass and handling geometry.
  • Surface: seams, laps, cracks, scale and decarburized-layer depth when required.
  • Microstructure: pearlite, segregation and nonmetallic inclusions for critical drawing grades when agreed.
  • Mechanical: contract-defined tensile range or other sampling, not an invented JIS fixed value.
  • Traceability: heat and coil numbers matched to mill test reports and shipping documents.
Agree test methods, acceptance limits, sampling frequency and certificate type prior to production or dispatch.

Traceability and Metallurgical Quality

For high reduction or fatigue-sensitive applications, inspection of rod surface, decarburization and structure may be essential to the wire converter’s yield and defect controls.

Real materials testing laboratory inspection of a high carbon steel wire rod sample and caliper, no labels added to the image

Heat and coil IDs should be carried through the delivery documents for incoming acceptance.

OPTIONAL PURCHASE TERMS

82B Wire Rod Custom Quality Requirements

Define the quality and logistics details that will affect mill selection, sampling, lead time and price.

Tighter Chemistry Limits

Discuss narrower carbon or impurity limits when the intended drawn wire requires improved processing consistency.

Additional Surface Inspection

Specify allowable decarburization depth, defect acceptance and test procedures for critical wire-making routes.

Coil and Packing Controls

Agree mass bands, tag details, handling dimensions, tie configuration and optional export protection.

Options are offered subject to production feasibility and must be included in the confirmed specification; they are not standard features of every 82B coil.
PACKING & LOGISTICS

82B Steel Wire Rod Export Packing

Clarify coil mass, lift points, traceable labels and shipment documents before loading.

Export warehouse with high carbon steel wire rod coils firmly bundled with metal ties on pallets for industrial container loading
EXPORT DELIVERY

Wire Rod Coil Packing and Shipment

Coils are generally grouped, tied and tagged to preserve identification and support safe handling throughout storage, loading and transportation.

  • Identify SWRH82B grade, heat, coil number and recorded mass.
  • Agree banding and lifting handling with the receiving wire mill.
  • Confirm allowable coil inner/outer diameter, width and weight.
  • Discuss transport moisture exposure and optional protective handling as required.
  • Coordinate the invoice, packing list, mill test documentation and agreed freight terms.
FREQUENTLY ASKED

82B High Carbon Wire Rod FAQ

PURCHASING FAQ

82B High Carbon Steel Wire Rod Questions

Technical information for wire drawing and steel procurement teams.

What is 82B high carbon steel wire rod?

82B commonly refers to SWRH82B under JIS G 3506. It is a high-carbon grade, supplied as hot-rolled wire rod coils for further wire conversion.

Which standard covers SWRH82B wire rod?

JIS G 3506:2024 is the current Japanese standard for high-carbon steel wire rod. The exact version and acceptance tests must be stated in the contract.

What is the carbon content of SWRH82B?

JIS G 3506:2024 lists 0.79–0.86% C, with 0.15–0.35% Si and 0.60–0.90% Mn; P and S are each limited to 0.030% in the grade reference.

Is 82B the same as SWRH82A?

Both share the JIS carbon and silicon ranges, but SWRH82B has 0.60–0.90% Mn while SWRH82A has 0.30–0.60% Mn. They should not be substituted without approval.

Can SAE 1080 replace 82B?

The grades are related high-carbon materials, but the chemistry windows and standards differ. The approved drawing process and final-product requirements determine whether substitution is acceptable.

What rod diameters can be supplied?

Ø5.5–20 mm is an enquiry reference from published mill product programs; the specific size, tolerance and availability need a mill confirmation.

Does JIS G 3506 specify a fixed tensile strength for SWRH82B?

The published SWRH82B chemistry grade does not provide a universal as-rolled tensile-strength/elongation pair. Specify test conditions and values if required for purchasing.

Why are pearlite and decarburization important?

The starting microstructure and surface carbon condition can affect drawing performance, wire strength consistency and downstream fatigue-sensitive processing.

Can 82B be used for prestressing steel strand?

82B may serve as feedstock for qualified prestressing wire and strand processing. The finished prestressing product must separately satisfy its specified standard and acceptance tests.

Is 82B finished spring wire or wire rope?

No. The product on this page is hot-rolled rod feedstock. Finished drawn wire, rope or other wire products require separate processing and qualification.

How do I calculate 82B wire rod shipment tonnage?

Use nominal coil mass multiplied by the number of coils for procurement planning, then verify final weight from actual mill scales. A diameter and length calculator provides a theoretical estimate.

What details do I need for an 82B RFQ?

Provide the SWRH82B grade/standard, nominal diameter, tonnage, coil mass, downstream wire application, any drawing-quality limits, inspection documents and delivery destination.

BAOSTEEL METAL / HIGH-CARBON WIRE ROD

Request an 82B High Carbon Wire Rod Quote

Send grade SWRH82B, the required diameter mix, coil mass range, total tonnage, intended drawn-wire or strand process, relevant surface and metallurgical tests, and shipping destination. We will review supply feasibility and commercial terms.

WhatsAppEmail