304 Stainless Steel Square Bar | 1.4301 Solid Square Stainless Bar ASTM A276 EN10088

Excellent general corrosion resistance for atmospheric & mild chemical environments
Easy cutting, welding and machining for fabrication
Stable square profile, convenient clamping & positioning
Wide size range from 3×3mm to 150×150mm
Meets ASTM A276 & EN10088 global standards

Product Overview

304 Stainless Steel Square Bar (1.4301 / X5CrNi18-10 / SUS304 / 06Cr19Ni10) is a solid square-section austenitic stainless steel bar manufactured to ASTM A276 and EN10088 standards. It is available in hot rolled and cold drawn forms. Hot rolled square bar covers 5×5mm up to 150×150mm, while cold drawn version supports minimum 3×3mm for precision components.

This grade provides balanced corrosion resistance and mechanical performance, widely used for decorative frames, mold inserts, equipment support racks and precision tooling fixtures. Its square geometry reduces machining workload during processing. We supply full sizes with MTC, strict quality inspection before shipment.

Stainless Steel Square Bar

Chemical & Mechanical Property Snapshot

Grade	Equivalent Brand	C Max	Cr	Ni	Mo	Yield Strength (MPa) Min	Tensile Strength (MPa) Min	Elongation (%) Min	Hardness HB Max
304	1.4301 / X5CrNi18-10 / SUS304 / 06Cr19Ni10	0.08	18.00-20.00	8.00-11.00	—	205	515	40	201

Detailed Technical Specifications

Item	Specification
Product Name	304 Stainless Steel Square Bar
Material Type	304 Austenitic Stainless Steel
Shape	Solid Square Bar
Manufacturing Standards	EN10088, ASTM A276
Production Type	Hot-Rolled Square Bar / Cold-Drawn Square Bar
Hot-Rolled Size Range	5×5mm – 150×150mm
Cold-Drawn Size	Minimum 3×3mm
Available Grade	304 (1.4301)
Surface / Processing	According to production requirements
Material Performance	Good corrosion resistance, stable mechanical strength, easy machining
Quality Control	Mill Test Certificate with heat number, chemical composition and mechanical property records
Packaging	Seaworthy bundled packing to prevent scratches and deformation
MOQ	5 Ton
Payment Terms	T/T, L/C at Sight
Delivery Time	7–15 working days after receiving deposit

Size Specification Table

Production Type	Side Dimension	Tolerance	Surface Finish	Length Range
Cold Drawn Stainless Steel Square Bar	3×3 mm–50×50 mm	±0.02–±0.05 mm	Bright polished / Pickled	1000–6000 mm, custom cut
Hot Rolled Stainless Steel Square Bar	5×5 mm–150×150 mm	±0.3–±1.0 mm	Black / Pickled & Passivated	2000–6000 mm, custom cut

Product Comparison Table

Comparison Item	304 Stainless Steel Square Bar	304 Stainless Steel Round Bar	Carbon Steel Square Bar
Material	304 Austenitic Stainless Steel	304 Austenitic Stainless Steel	Carbon Structural Steel
Cross Section	Solid Square	Solid Round	Solid Square
Main Advantage	Stable square geometry, easy clamping & positioning, reduces machining workload for fixtures & molds	Excellent circumferential machining flexibility, ideal for rotary parts	Low cost, good weldability for general structural use
Manufacturing Standard	EN10088, ASTM A276	GB/T 1220, ASTM A276, ASTM A484, EN 10088-3	GB/T 706, ASTM A36, EN 10025
Size Range	Cold-drawn: Min.3×3 mm; Hot-rolled:5×5 mm–150×150 mm	Φ3 mm–Φ300 mm	5×5 mm–200×200 mm
Full Available Grades & Equivalent	304 (1.4301/X5CrNi18-10/SUS304/06Cr19Ni10)	304 (1.4301/X5CrNi18-10/SUS304/06Cr19Ni10)	Q235B, Q355B, S235JR, S355JR, ASTM A36
Processing Advantage	Pre-shaped square profile, less cutting & shaping work	Suitable for turning, grinding, and shaft manufacturing	Easy cutting, welding & forming
Corrosion Resistance	Good for atmospheric & mild corrosive environment	Good for atmospheric & mild corrosive environment	Poor; requires anti-corrosion coating
Typical Applications	Decorative frames, mold inserts, anti-corrosion equipment racks, precision tooling fixtures	Chemical equipment, marine parts, pump shafts	Building supports, general machinery structural parts, brackets

App Market

Reliable Steel Coil Solutions For Diverse Industrial Applications

Corrosion-Resistant Equipment Frames

Mold Inserts

Decorative Structural Frames

Product Packaging

Secure Export Packaging For Safe Handling And Delivery

FAQs

What is the equivalent grade of 304 stainless steel square bar?

304 stainless steel square bar equivalent: 1.4301, X5CrNi18-10, SUS304, 06Cr19Ni10.

Can you cut 304 square bar to custom lengths?

Yes, we can provide custom cutting service according to your required length.

What is MOQ for 304 stainless steel square bar?

MOQ is 5 tons.

Does 304 square bar come with MTC?

Yes, Mill Test Certificate will be provided for each batch.

What surface finishes can you supply?

We can supply hot rolled pickled, cold drawn bright finish as your requirement.

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304 Stainless Steel Square Bar | 1.4301 Solid Square Stainless Bar ASTM A276 EN10088