1.4301 1d vs. 1.4301 2d stainless steel

If you are sourcing EN 1.4301 stainless steel (AISI 304) for industrial, construction, or mechanical applications, you may see the designations 1D and 2D on material certificates or product descriptions.These surface treatment codes, defined in EN 10088-2, indicate the final surface treatment process that affects the steel's appearance, surface finish, and corrosion resistance.

Understanding the difference between 1.4301 1D and 1.4301 2D surface treatments will help you select the appropriate material for your project needs-whether for decorative panels, process equipment, or heat-resistant components.

 

What is 1.4301 1D stainless steel?

1.4301 1D stainless steel (hot-rolled, annealed, pickled) has a rough, non-reflective surface after hot rolling, annealing, and descaling (usually pickling). No further surface smoothing is performed; the rolled oxide scale texture is retained; it has a matte gray finish.

 

What is 1.4301 2D stainless steel?

1.4301 2D stainless steel (cold-rolled, annealed, pickled) exhibits a smoother, more uniform matte finish after cold rolling, annealing, and pickling. Its surface is finer than 1D stainless steel; it is typically used in applications requiring a uniform appearance and higher corrosion resistance.

 

 

Feature	1.4301 1D	1.4301 2D
Manufacturing Process	Hot rolled → Annealed → Pickled	Cold rolled → Annealed → Pickled
Surface Texture	Rougher, matte, visible rolling scale	Smoother, uniform dull gray
Roughness (Ra)	1.0 – 5.0 µm	0.3 – 0.8 µm
Reflectivity	Low	Medium
Thickness Range	3.0 – 80 mm (plate)	0.3 – 6.0 mm (sheet)
Corrosion Resistance	Moderate	Better due to smoother surface
Applications	Heat exchangers, furnace components, industrial parts	Chemical tanks, food processing, architectural panels
Price (USD/kg)	$2.4 – $3.0	$2.6 – $3.2

 

What is the difference between 2B and 1.4301 no.4 finish stainless steel plate?

The main difference lies in the surface treatment: 2B has a common, matte, slightly reflective "rolled surface" suitable for functional applications; while No.4 steel has a brushed satin finish, which is mechanically polished to create a clear and uniform texture, making it more aesthetically pleasing and suitable for decorative or architectural uses.

 

1.4301 Stainless Steel Data Sheet

Property	Description
Grade Name	EN 1.4301 / AISI 304 / X5CrNi18-10
Chemical Composition (wt%)	C ≤ 0.07%, Si ≤ 1.00%, Mn ≤ 2.00%, Cr 17.5–19.5%, Ni 8.0–10.5%, P ≤ 0.045%, S ≤ 0.015%
Density	7.93 g/cm³
Tensile Strength (MPa)	≥520
Yield Strength (MPa)	≥210
Elongation (%)	≥45
Hardness (HB)	≤215
Weldability	Excellent, suitable for TIG/MIG welding
Corrosion Resistance	Excellent in atmospheric and mild chemical environments
Operating Temperature	Up to 870°C intermittent use

 

Why Choose Gnee as Your 1.4301 Stainless Steel Supplier
✅ 18+ years of export experience in stainless steel manufacturing

✅ Comprehensive product range (sheets, coils, plates, and tubes) in both 1D and 2D ,2b ,NO.4 8K finishes
✅ ISO 9001, SGS, and BV certified quality
✅ Custom services: cutting, leveling, polishing, CNC bending, and packaging
✅ Global delivery: CIF, FOB, and EXW terms available with quick lead time