China 316 Stainless steel flat bar wholesale: large quantity and good price Manufacturers, Supplier

Select high-quality stainless steel, smooth surface, easy to process and weld

Standard: ASTM A276

Grade: 304 316 321 630 904L

Size: 2x20 to 25x150mm

Product Description

316 Stainless Steel Flat Bar
316 stainless steel flat bar is a solid stainless steel section with a rectangular cross-section. Like round bar, it is made from 316 stainless steel, a stainless steel known for its excellent corrosion resistance, particularly in chloride environments. The unique shape of flat bar gives it specific advantages in many structural and manufacturing applications.
316 stainless steel flat bar display
316 stainless steel flat bar surface
Key Features
Excellent Corrosion Resistance 316 stainless steel flat bar contains molybdenum, which makes it more resistant to pitting and crevice corrosion than 304 stainless steel in chloride environments (such as marine and chemical industries).
High Strength and Rigidity The flat cross-section design provides high strength and structural rigidity, enabling it to withstand high bending and shear stresses effectively.
Excellent Processability It is easy to cut, drill, weld, and machine, facilitating various fabrication and assembly applications across different industries.
Aesthetics and Practicality Its flat surface provides aesthetic value in architectural and decorative applications while remaining easy to clean and maintain.
Stainless steel flat bar application
Stainless steel flat bar stock
Product Specifications
Category Details
Standard ASTM A276, A484, A479, A580, A582, JIS G4303, JIS G4311, DIN 1654-5, DIN 17440, KS D3706, GB/T 1220
Material Grade EN1.4307, EN1.4845, EN1.4547, EN1.4404, EN1.4919, EN1.4571, EN1.4438, EN1.4541, EN1.4878, EN1.4550, EN1.3974, EN1.4511, EN1.4006
Surface Finish Pickled, Peeled, Black, Sand Blast, Bright etc.
Technology Hot Rolled, Cutting
Specifications 20*3mm - 100*10mm or custom size
Tolerance Standard or as per requirement
Size and Weight Chart
Size (mm) Weight (Kg/m) Size (mm) Weight (Kg/m)
12 x 30.2850 x 62.37
20 x 30.4760 x 62.84
25 x 30.5975 x 63.56
30 x 30.71100 x 64.74
40 x 30.9525 x 81.58
50 x 31.1930 x 81.9
60 x 31.4240 x 82.53
75 x 31.7850 x 83.16
100 x 32.3760 x 83.79
12 x 50.4775 x 84.74
20 x 50.79100 x 86.32
25 x 50.9925 x 101.98
30 x 51.1930 x 102.37
40 x 51.5840 x 103.16
45 x 51.7850 x 103.95
50 x 51.9860 x 104.74
60 x 52.3775 x 105.93
75 x 52.96100 x 107.9
100 x 53.9525 x 122.37
12 x 60.5730 x 122.84
flat-steel-splicing-diagram
Frequently Asked Questions
FAQ Icon
What are the primary applications of 316 stainless steel flat bars?
Common applications include marine hardware, chemical processing equipment, structural supports in corrosive environments, architectural trim, and food processing machinery where high hygiene and corrosion resistance are required.
How does 316 grade differ from 304 grade flat bars?
The main difference is the addition of molybdenum in grade 316, which significantly improves resistance to chlorides and pitting, making it superior for coastal or chemical environments compared to 304.
Is 316 stainless steel flat bar magnetic?
316 stainless steel is an austenitic grade, which means it is generally non-magnetic in the annealed condition. However, it may become slightly magnetic after cold working or welding.
What surface finishes can I choose for my project?
We offer several finishes including Hot Rolled Pickled (No.1), Bright (Cold Drawn), Polished, and Sand Blasted, depending on whether your priority is industrial utility or architectural appearance.
Can these flat bars be welded easily?
Yes, 316 stainless steel has excellent weldability using all standard fusion methods. For heavy sections, post-weld annealing might be used to restore maximum corrosion resistance, although 316L (low carbon) is often preferred for heavy welding.
Are custom sizes and lengths available?
Yes, while we carry a wide range of standard sizes from 20*3mm up to 100*10mm, we can provide cutting services to meet your specific length and dimensional requirements.

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