Polished 316 Stainless Steel Flat Bar Price Per kg (Latest 2025)

What is Polished 316 Stainless Steel Flat Bar?

Polished 316 stainless steel flat bars are made of AISI 316 austenitic stainless steel containing 2-3% molybdenum, significantly enhancing their resistance to chloride corrosion and pitting. Polished surfaces (No. 4, BA, or mirror finish) combine aesthetics and hygiene, and are widely used in decorative structures, handrails, food-grade equipment, and marine engineering.

Gnee supplies polished 316 flat bars in various sizes conforming to ASTM A276/A484 standards, precision ground and surface polished, suitable for industries such as shipbuilding, food processing, chemical, and construction.

 

 

316 Stainless Steel Flat Bar Specification

Property	316 Stainless Steel Flat Bar
Standard	ASTM A276 / A484 / EN 10088
Grade	AISI 316 / EN 1.4401 / UNS S31600
Chemical Composition	Cr: 16–18%, Ni: 10–14%, Mo: 2–3%, C ≤ 0.08%
Tensile Strength	515–760 MPa
Yield Strength (0.2%)	≥205 MPa
Elongation	≥40%
Hardness	≤217 HB
Density	8.0 g/cm³
Surface Finish	2B, No.4, Hairline, Mirror Polished
Width	20 mm – 200 mm
Thickness	3 mm – 50 mm
Length	1 m – 6 m (custom available)

 

As of November 2025, the polished 316 stainless steel flat bar price per kg ranges from:

Finish Type	Thickness	Price (USD/kg, FOB China)
2B / No.1	3–6 mm	$3.60 – $3.90
No.4 Satin	6–20 mm	$3.90 – $4.30
Mirror Polished	20–50 mm	$4.30 – $4.80

Note: Prices vary depending on surface finish, order quantity, and tolerance requirements.For large-volume orders, Gnee provides discounted mill-direct pricing and custom polishing services.

 

How do I calculate the weight of a 316 stainless steel flat bar?
Weight (kg/m) = Thickness (mm) × Width (mm) × 0.00793
Example: A 20 × 50 mm 316 flat bar weighs approximately 7.93 kg/m.

 

Gnee is one of China's leading stainless steel suppliers, with over 18 years of export experience, specializing in the production of 316 polished flat steel conforming to ASTM, EN, and JIS standards.

Sufficient Inventory: Over 2,000 tons of 316/316L stainless steel bars in stock.

Fast Delivery: Worldwide delivery in 7-15 days.

Customization Services: Polishing, rounding, and laser cutting services available.

Quality Certifications: ISO 9001, SGS, BV, and TUV certified.

Global Coverage: Products exported to over 60 countries, widely used in marine, food, and construction projects.

Packaging: Each steel bar is wrapped in plastic film and packed in seaworthy wooden crates or steel pallets to prevent scratches.