Steel Billets

Product Specifications

Technical details and manufacturing context for Steel Billets

Definition

Steel billets are intermediate products in steel manufacturing, typically produced through continuous casting or ingot casting processes. They have a square or rectangular cross-section with dimensions ranging from 50mm to 200mm and serve as the primary raw material for rolling mills to produce bars, rods, wire, and other finished steel products. In the directory, steel billets are classified under Basic Metal Manufacturing as a material type. The cross-section dimensions typically range from 100×100 mm to 200×200 mm, with lengths from 6000 to 12000 mm. The weight per meter is approximately 0.5 to 3.5 kg. Carbon content ranges from 0.08% to 0.45%, and tensile strength from 370 to 650 MPa, with yield strength from 205 to 355 MPa. Elongation is 20% to 30% in 5× diameter gauge length. Dimensional tolerance is ±1.5 mm, and straightness is ≤3 mm/m. Sulfur and phosphorus contents are each ≤0.05%. These values are reference ranges based on standards such as GB/T 702 and GB/T 700, and must be verified for specific grades and applications. The billets can be made from carbon steel, alloy steel, or stainless steel. Surface quality is rated as ≤1.5 grade. The working principle involves solidifying molten steel into continuous strands via water-cooled molds, then cutting to length. For procurement, verify the exact dimensions, material grade, and compliance with relevant standards with the supplier or manufacturer.

Working Principle

Steel billets are created by solidifying molten steel into continuous lengths through controlled cooling in casting machines. The molten steel is poured into water-cooled molds where it solidifies from the outside inward, forming a continuous strand that is then cut to specific lengths for further processing. This process ensures a uniform cross-section and consistent material properties, which are critical for subsequent rolling operations. The cooling rate and mold design influence the internal structure and surface quality of the billet. After solidification, the billets are inspected for surface defects and dimensional accuracy before being dispatched to rolling mills.

Common Materials

Carbon Steel, Alloy Steel, Stainless Steel

Technical Parameters

Parameter	Typical range	Notes & selection driver
Cross-Section DimensionsRequired	100×100–200×200 mm	Width and height of the billet cross-sectionGB/T 702
LengthRequired	6000–12000 m	Standard length of individual billet piecesGB/T 702
WeightRequired	0.5–3.5 kg	Approximate weight per meter of billet
Carbon ContentRequired	0.08–0.45 %	Percentage of carbon in the steel compositionGB/T 700
Surface Quality	≤1.5 grade	Quality rating based on surface defects and smoothnessGB/T 702
Tensile Strength	370–650 MPa	Depends on grade.GB/T 700
Yield Strength	205–355 MPa	Minimum values for structural grades.GB/T 700
Elongation	20–30 %	In 5× diameter gauge length.GB/T 700
Dimensional Tolerance	±1.5 mm	For cross-section dimensions.GB/T 702
Straightness	≤3 mm/m	Max deviation per meter.GB/T 702
Sulfur Content	≤0.05 %	Maximum for quality steel.GB/T 700
Phosphorus Content	≤0.05 %	Maximum for quality steel.GB/T 700

Ranges are indicative industry figures for RFQ preparation, not a supplier commitment. Confirm every value and standard with the legal manufacturer before ordering.

Components / BOM

Steel Matrix Part
Primary structural material providing mechanical properties

Material: Iron-carbon alloy with alloying elements
Surface Scale Part
Oxide layer formed during casting and cooling processes

Material: Iron oxides (FeO, Fe2O3, Fe3O4)
Identification Markings Part
Painted or stamped codes indicating grade, heat number, and manufacturer

Material: Heat-resistant paint or stamped impressions

Industry Taxonomies & Aliases

Commonly used trade names and technical identifiers for Steel Billets.

Manufacturers of Steel Billets

Manufacturer profiles associated with Steel Billets.

Sourcing Steel Billets from China?

Tell us your specification and target quantity — we will match it against manufacturer records and come back with the factories that fit.

Request manufacturers We manufacture this

Manufacturer listings support early research and capability understanding. They are not certification, ranking, or transaction guarantees.

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

Check the legal entity, factory address, ownership, certifications, and direct contacts.

CNFX does not score or rank suppliers. Buyers must verify all claims and documents with the legal manufacturer before ordering.

Frequently Asked Questions

What are the typical cross-section dimensions of steel billets?

According to the directory, cross-section dimensions range from 100×100 mm to 200×200 mm, with a tolerance of ±1.5 mm. Always confirm the exact dimensions with the supplier for your specific application.

What materials are steel billets available in?

Steel billets can be made from carbon steel, alloy steel, or stainless steel. The specific grade and composition should be verified with the manufacturer to meet your requirements.

What standards apply to steel billets?

The directory lists GB/T 702 for dimensions and surface quality, and GB/T 700 for mechanical properties and chemical composition. These standards serve as references; confirm compliance with the supplier.

How are steel billets produced?

Steel billets are produced by continuous casting or ingot casting. Molten steel is solidified in water-cooled molds to form a continuous strand, which is then cut to length. The process ensures uniform properties for further processing.

Data Basis

Editorial classification, named public sources where available, and source-reviewed manufacturer records.

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.

Buyer enquiry

Request manufacturing insight for Steel Billets

Ask for use case, specification boundaries, supplier type, and RFQ preparation information for this product.

Where it goes: Straight to the CNFX editorial desk, and to the manufacturer if this product is linked to a claimed profile. Nothing is broadcast to a supplier list.
Your details stay here: We do not sell or rent enquiry data, and we do not add you to a mailing list. Used only to answer this request.
No commission, no middleman: CNFX is a directory. We take no cut of any order and never negotiate on a supplier's behalf.
What we don't claim: A listing is not an endorsement. Qualify every supplier and verify every figure yourself before ordering.

pressure:	Not applicable (solid product, no pressure rating)
other spec:	Cross-section dimensions (typically 100x100mm to 200x200mm), Length (6-12m), Weight per unit, Surface quality requirements, Chemical composition tolerances
temperature:	Ambient to 1250°C (for hot rolling processes)

Product Specifications

Industry Taxonomies & Aliases

Industrial Ecosystem & Supply Chain Structure

Application Fit & Sizing Matrix

Reliability & Engineering Risk Analysis

Compliance & Manufacturing Standards