1.4541 vs 1.4571 stainless steel: what’s the difference?

1.4541 (X6CrNiTi18-10) and 1.4571 (X6CrNiMoTi17-12-2) are both titanium-stabilized austenitic stainless steels, often used in welded, high-temperature, or corrosive environments. Though they share some similar features-such as intergranular corrosion resistance-they differ significantly in chemical composition, corrosion resistance, and application suitability.

 

1.4541 Vs 1.4571 stainless steel：Chemical Composition (by weight percentage)

Element	1.4541 (AISI 321)	1.4571 (AISI 316Ti)
Carbon (C)	≤ 0.08%	≤ 0.08%
Chromium (Cr)	17.0-19.0%	16.5-18.5%
Nickel (Ni)	9.0-12.0%	10.5-13.5%
Titanium (Ti)	≥ 5x C (approx. 0.7%)	≥ 5x C (approx. 0.5%)
Molybdenum (Mo)	-	2.0-2.5%
Manganese (Mn)	≤ 2.0%	≤ 2.0%
Silicon (Si)	≤ 1.0%	≤ 1.0%
Phosphorus (P)	≤ 0.045%	≤ 0.045%
Sulfur (S)	≤ 0.015%	≤ 0.015%

Differences Between 1.4541 and 1.4571  Corrosion Resistance

Property	1.4541 (AISI 321)	1.4571 (AISI 316Ti)
Corrosion Resistance	Good general & intergranular	Better resistance in chlorides & acids
Pitting Resistance (PREN)	~19–20	~24–28
High-Temperature Use	Up to ~850 °C	Up to ~850 °C
Cost	Lower	Higher due to Mo addition
Typical Applications	Exhaust systems, heat exchangers	Chemical tanks, marine piping, reactors

1.4541 Vs 1.4571 stainless steel：Mechanical Properties

Property	1.4541 (Alloy 321)	1.4571 (Alloy 316Ti)
Tensile Strength (Rm)	500-700 MPa	500-700 MPa
Yield Strength (Rp0.2)	≥ 190 MPa	≥ 200 MPa
Elongation (A5)	≥ 40%	≥ 40%
Hardness (HB)	≤ 215	≤ 215
Density (ρ)	7.9 g/cm³	7.9 g/cm³

1.4541 Vs 1.4571 stainless steel：Temperature Range

Temperature Properties	1.4541 (SS 321)	1.4571 (SS 316Ti)
Maximum Operating Temp.	Up to 800°C	Up to 600°C
Resistance to Sensitization	Excellent (Ti-stabilized)	Excellent (Ti-stabilized)

 

Is 1.4571 better than 1.4541?

Yes, in corrosive environments, especially those involving chlorides or acids, 1.4571 performs better due to its molybdenum content.

Can 1.4571 replace 1.4541?

Yes, technically. 1.4571 offers all the benefits of 1.4541 plus enhanced corrosion resistance, but at a higher cost.

 

Need help choosing between 1.4541 and 1.4571 stainless steel for your project? Gnee's team of experts is ready to help you evaluate cost, performance, and availability. 

Whether you're choosing 1.4541 for thermal stability or 1.4571 for corrosion resistance, Gnee offers:

✅ Full stock in sheet, plate, tube, and hollow section formats

✅ Mill test certificates (EN 10204 3.1 / 3.2)

✅ Custom sizes, cutting, polishing & export packaging

✅ Fast delivery and expert technical support

Contact now