01
ASTM A276 / A276M
Stainless steel bars and shapes
Standard specification for stainless steel bars and shapes.
Stainless Steel — Industrial Product
Mirror Polished Steel Bar
Austenitic 304 stainless steel bar supplied to ASTM A276 / EN 10059, mirror polished for architectural, decorative and premium applications.
Indicative priceUSD 1,800 - 2,400 / MT (surface premium included)
Lead time10 - 20 working days
01
Overview
Mirror Polished Steel Bar combines austenitic 304 chemistry with a high-gloss mirror polished surface for reliable corrosion resistance and a premium decorative appearance. The reflective finish, smooth surface and consistent dimensional accuracy make the bar suited to architectural handrails, decorative structures, premium kitchen equipment, signage posts and display fixtures. Supplied to ASTM A276 with mill test certification per EN 10204 3.1, it supports global procurement for premium architectural and design-led projects.
Key Characteristics
- 01 Corrosion Resistance Provides improved resistance to corrosive industrial environments.
- 02 Good Formability Supports bending, forming and other fabrication processes with suitable processing conditions.
- 03 Good Weldability Supports welding using suitable procedures and compatible filler materials.
- 04 Oxidation Resistance Provides resistance to oxidation and scaling at elevated temperatures.
- 05 Standard Compliance Manufactured and supplied in accordance with the specified material and product standards.
- 06 Traceable Documentation Supplied with documentation supporting material identification, chemical and mechanical traceability.
Typical Applications
- Kitchen & Catering Equipment Worktops, sinks and food-service equipment where cleanliness and environmental durability are required.
- Decorative Architecture Interior and exterior architectural finishes and decorative components requiring appearance and environmental durability.
- Chemical Processing Process piping, transfer systems and equipment for corrosive and high-purity media.
- Machinery & Equipment Shafts, gears, housings, frames and other components for industrial machinery and OEM equipment.
- Stamping & Machining Metal forming and machining for stamping, deep drawing, CNC machining and forging operations.
02
Specifications
Numbers in this section correspond to the applicable product standard, formatted for direct use in enquiry and approval documents.
Product specification
- Material
- Stainless steel
- Grade
- 304 / 1.4301 / SUS304
- UNS designation
- S30400
- Product form
- Bar / rod
- Manufacturing method
- Hot rolled / cold drawn
- Surface / condition
- Mirror Polished
- Cross-section
- Solid round section (standard); square/hex on request
Supply specifications
- Diameter
- 6 - 300 mm (round); custom sections on request
- Length
- 3 - 12 m; cut-to-length on request
- Tolerance
- According to ASTM A484 / EN 10060
- Surface finish
- Mirror Polished
- Straightness
- <= 2 mm/m
- Marking
- Standard mill marking; customer marking on request
Final supply is confirmed against the project drawing, purchase agreement and the mill test certificate.
Chemical composition
ElementRequirement
C <= 0.08 %
Si <= 0.75 %
Mn <= 2.00 %
P <= 0.045 %
S <= 0.030 %
Cr 18.0 - 20.0 %
Ni 8.0 - 10.5 %
Fe Balance
Reference: ASTM A276 Stainless Steel.
Mechanical properties
PropertyRequirement
Tensile strength >= 515 MPa
Yield strength (0.2% offset) >= 205 MPa
Elongation in 50 mm >= 40 %
Hardness <= 201 HB / <= 92 HRB
Reference: ASTM A276 Stainless Steel at room temperature.
Physical properties
PropertyTypical Value
Density 8.0 g/cm³
Elastic modulus 193 GPa
Thermal conductivity 16.3 W/m·K at 100°C
Electrical resistivity 0.74 μΩ·m
Specific heat 500 J/kg·K
Melting range 1,400 - 1,450 °C
Thermal expansion 17.0 x 10⁻⁶ /°C
Reference: Typical material values, Stainless Steel.
Reference framework
Standards & documentation
The applicable product, dimensional and inspection standards should be confirmed together in the purchase specification.
02
EN 10088-3
Stainless steel wire rod and drawn wire
European reference for stainless steel wire rod and drawn wire (also covers drawn bar).
03
EN 10058
Hot-rolled flat steel bars
European reference for hot-rolled flat steel bars for general purposes.
04
JIS G4303
Stainless steel bars
Japanese reference for stainless steel bars for general, machine and structural use.
05
GB/T 1220
Stainless steel bars
Chinese reference for stainless steel bars.
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EN 10204
Inspection documents
Defines inspection document types such as 3.1 and 3.2 for metallic product delivery.
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Capability
From custom dimensions and precision sizing to heat treatment, surface finishing and product-specific processing, Wayland coordinates supply solutions tailored to your requirements.
Cutting
Cut-to-length and custom cutting according to order requirements.
Custom Dimensions
Non-standard dimensions, tolerances and dimensional combinations subject to product and mill capability.
Precision Sizing
Precision sizing and dimensional control for tighter tolerance requirements.
Cold Working
Cold drawing, cold sizing and other cold-working processes where required.
Heat Treatment
Heat treatment according to material, specification and applicable standard.
Surface Finishing
Surface treatment and finishing according to product, specification and application requirements.
Machining
Turning, drilling, milling and other machining operations where required.
Forming
Bending, forming and other shape modification according to drawings or order requirements.
Customization
Custom dimensions, lengths, surface conditions, end preparations and inspection requirements can be supplied according to project specifications. Final capability is confirmed per enquiry based on grade, size range and applicable standard.
04
Quality
Inspection and documentation procedures are coordinated to meet the requirements of the applicable product standard and the project specification.
- Dimensional inspection Geometry, dimensions and tolerances against the applicable standard
- Visual and surface inspection Surface condition, marking and overall appearance
Documents
- Inspection Report
- Chemical analysis Per heat, against the applicable standard
- Mechanical testing Tensile, yield, elongation and hardness
- Non-destructive testing UT, eddy-current, hydrostatic or other NDT as applicable
- Positive material identification PMI for alloy verification when required
Documents
- Mill Test Certificate (MTC)
- Heat number traceability Heat number carried through MTC and product marking
- Third-party inspection coordination SGS / BV / TÜV on request
Documents
- Third-Party Inspection Report
- EN 10204 documentation 3.1 MTC standard; 3.2 on request
Documents
- EN 10204 3.1 Mill Test Certificate
- EN 10204 3.2 Inspection Certificate
- Certificate of Origin
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Selection
A well-prepared specification is the most efficient defence against clarification cycles.
- 01 Select material & grade
Choose the material grade according to service conditions, performance requirements and applicable standards.
- 02 Define size & supply condition
Specify the required dimensions, surface condition, heat-treatment condition and delivery requirements.
- 03 Confirm standard & requirements
State the applicable product standard, dimensional standard and governing project specification.
- 04 Define inspection & documentation
Confirm inspection, testing, certification and documentation requirements before order placement.
Example procurement specification
A complete specification suitable for enquiry, covering product, technical requirements, certification and delivery terms.
- Product
- Mirror Polished Steel Bar
- Grade
- 304
- Standard
- ASTM A276
- Dimensions
- Ø 16 mm × Length 6000 mm; Mirror Polished
- Condition
- No.4 / Matte / Mirror Finish; PVC Film
- Certification
- EN 10204 3.1 Mill Test Certificate
- Quantity
- 20 Metric Tons
- Packaging
- Seaworthy Export Packing
- Incoterm
- CIF Hamburg
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Logistics
From mill dispatch to destination port, each stage is coordinated with the nominated forwarder and documented against the purchase specification.
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Packaging
Export-suitable packaging with surface and edge protection.
Bundled, wrapped or crated according to product form and transport mode. Outer surface protected with weather-resistant material; ends and edges shielded against transit damage.
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Loading
FCL container for standard sizes; break bulk for oversized cargo.
Container loading via nominated forwarder. LCL and dimensions outside container allowance coordinated against the mill dispatch schedule.
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Documentation
Commercial invoice, packing list and certificate of origin.
Mill documentation travels with the shipment. EN 10204 3.1 / 3.2 certificates and third-party inspection reports provided as per purchase specification.
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Shipment
Sea freight as standard; alternative routes on request.
FCL / LCL container shipment or break bulk for oversized dimensions. Logistics coordinated through the nominated forwarder.
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Delivery
FOB · CFR · CIF · FCA · EXW arrangements available.
Incoterm 2020. Port of loading: Shanghai / Ningbo / Shenzhen. Final destination and terms confirmed per enquiry.
07
FAQ
Most enquiries reduce to a small set of recurring technical questions.
01 What is mirror polished stainless bar?
Mirror polished bar (No.8 finish) has a highly reflective surface produced by successive grinding and buffing using progressively finer abrasives.
02 What are typical applications?
Mirror bar is widely used for high-end architectural trim, decorative columns, elevator interiors, kitchen and bathroom hardware and luxury furniture.
03 What lengths are available?
Standard length 4 - 6 m. Cut-to-length is available on request.
04 How is mirror finish protected for shipment?
PE / PVC laser film protects the polished surface. Foam interleaving and wooden crate packaging for export.
05 Is mirror bar magnetic?
304 / 316 are non-magnetic in the annealed condition. 430 is ferritic and magnetic.