What is the difference between 1.4435 and 316L?

If you are looking for high-purity, corrosion-resistant stainless steel for chemical, pharmaceutical, or semiconductor applications, Gnee can supply both EN 1.4435 and AISI 316L stainless steel plates, coils, and tubes with full certification and customized dimensions. We deliver precision stainless steel products with guaranteed composition consistency, traceable heat numbers, and international approvals (ISO, EN, ASTM, ASME).

 

What is 1.4435 stainless steel?

1.4435 is an austenitic stainless steel, also known as X2CrNiMo18-14-3 or high-nickel 316L. The equivalent of EN 1.4435 stainless steel is AISI 316L (commonly referred to as 316LMo or 316L urea steel), a high-grade low-carbon austenitic stainless steel similar to standard 316L (1.4404), but with greater corrosion resistance due to its higher molybdenum content. AISI 316L is renowned for its excellent corrosion resistance, especially in environments with high concentrations of chlorides, acids, and alkalis, and is widely used in the pharmaceutical, chemical, and food industries.

 

Is 1.4435 the same as 316L?
1.4435 stainless usually compeared with 316L (1.4404) stainless steel grade. 1.4435 material has a higher content of chromium, nickel and molibdenium and because of these elements, it is more resistant to corrosion then 316L (1.4404) grade.

 

​​1.4404 (316L) vs 1.4435 stainless steel

Chemical Composition (%)​​

(Per EN 10088-2 / ASTM A240 standards)

​​Element​​	​​1.4404 (316L)​​	​​1.4435 (316L Low Sulfur)​​
​​Carbon (C)​​	≤0.030	≤0.030
​​Chromium (Cr)​​	16.0–18.5	16.0–18.5
​​Nickel (Ni)​​	10.0–14.0	10.0–14.0
​​Molybdenum (Mo)​​	2.0–3.0	2.0–3.0
​​Manganese (Mn)​​	≤2.0	≤2.0
​​Silicon (Si)​​	≤1.0	≤1.0
​​Phosphorus (P)​​	≤0.045	≤0.030
​​Sulfur (S)​​	≤0.030	​​≤0.010 (or ≤0.005)​​

 

Mechanical Properties (Typical Values at Room Temperature)​​

(Per EN 10088-2 / ASTM A240)

​​Property​​	​​1.4404 (316L)​​	​​1.4435 (316L Low Sulfur)​​
​​Tensile Strength (MPa)​​	485–795	485–795
​​Yield Strength (0.2% Offset, MPa)​​	205–515	205–515
​​Elongation (% in 50mm)​​	≥40	≥40
​​Hardness (HRB)​​	≤95	≤95

 

Corrosion Resistance
Both 1.4404 and 1.4435 offer excellent corrosion resistance, especially in chloride-rich environments (e.g., marine and chemical industries). 1.4435 offers better pitting resistance due to its lower phosphorus (P) and sulfur (S) contents, but the difference between the two is minimal in most applications.

 

Machinability
1.4435 is easier to machine than 1.4404 due to its extremely low sulfur content (≤0.010%), which improves chip breaking and extends tool life.

 

Weldability and Formability
Both grades are easily welded and formable without cracking, but 1.4404 is more commonly used for welded structures due to its standard sulfur content. 1.4435 is preferred when machining parts requiring high precision and smooth surfaces (e.g., fittings and fasteners).

 

Why Choose Gnee as Your Stainless Steel Supplier?

Over 18 years of export experience in stainless steel materials.

1000+ tons of 316L and 1.4435 coils, sheets, and tubes in stock.

Advanced processing: CNC cutting, laser polishing, bending, orbital welding.

Global certifications: ISO, SGS, BV, TUV, PED 97/23/EC.

Fast delivery: 7–15 days worldwide shipping, moisture-proof packaging, wooden pallets or crates.

Flexible payment: T/T, L/C, or trade assurance via Alibaba.

Gnee Stainless Steel Product Supply Range

Product Type	Available Grades	Dimensions	Surface Finish	Standards
Plates & Sheets	1.4435 / 316L	0.3–50 mm thickness	2B, BA, No.4, Mirror	ASTM A240 / EN 10088
Seamless Tubes & Capillary Tubes	1.4435 / 316L	OD 0.5–60 mm	BA / EP	ASTM A269 / A213
Coils & Strips	1.4435 / 316L	0.2–6 mm	2B / BA	ASTM A240
Fittings & Flanges	1.4435 / 316L	Custom	Pickled / Polished	ASME B16.5 / BPE

All materials are supplied with EN 10204 3.1 / 3.2 certificates, traceability reports, and surface roughness documentation for pharmaceutical and bioprocess applications.