AISI 305 VS. 1.4303 Stainless Steel: What’s the Difference?
Leave a message
AISI 305 vs. EN 1.4303 Stainless Steel: What's the Difference?
When selecting stainless steel for cold forming or deep drawing applications, two grades often come into focus: AISI 305 and EN 1.4303. These grades are functionally equivalent in many ways, but they follow different international standards and may have slight variations in specification depending on the source.
Let's break down their similarities, differences, and best-use scenarios.
AISI 305 vs EN 1.4303
| Standard | Grade Name | UNS | Description |
|---|---|---|---|
| AISI (USA) | 305 | S30500 | Austenitic stainless steel with high Ni, low C |
| EN (Europe) | 1.4303 | – | Equivalent to 305; high-nickel austenitic grade |
EN 1.4303 stainless steel is an austenitic stainless steel formulated for primary forming into wrought products. 1.4303 is the EN numeric designation for this material. X4CrNi18-12 is the EN chemical designation.
| Grade : | X4CrNi18-12 |
| Number: | 1.4303 |
| Classification: | Austenitic stainless steel |
| Density: | 7.9 g/cm ³ |
| Standard: |
EN 10088-2: 2005 Stainless steels. Technical delivery conditions for sheet/plate and strip of corrosion resisting steels for general purposes EN 10088-3: 2005 Stainless steels. Technical delivery conditions for semi-finished products, bars, rods, wire, sections and bright products of corrosion resisting steels for general purposes EN 10269: 1999 Steels and nickel alloys for fasteners with specified elevated and/or low temperature properties EN 10263-5: 2001 Steel rod, bars and wire for cold heading and cold extrusion. Technical delivery conditions for stainless steels EN 10088-1: 2005 Stainless steels. List of stainless steels |
AISI 305 vs EN 1.4303：Chemical Composition
| Element | AISI 305 / 1.4303 |
|---|---|
| Carbon (C) | ≤ 0.03% |
| Chromium (Cr) | 17.0–19.0% |
| Nickel (Ni) | 10.0–13.0% |
| Manganese (Mn) | ≤ 2.0% |
| Silicon (Si) | ≤ 1.0% |
| Phosphorus (P) | ≤ 0.045% |
| Sulfur (S) | ≤ 0.03% |
AISI 305 vs EN 1.4303：Mechanical Properties (Typical)
| Property | AISI 305 / EN 1.4303 |
|---|---|
| Tensile Strength | 520–680 MPa |
| Yield Strength | ~220 MPa |
| Elongation | ≥ 40% |
| Hardness (HB) | ≤ 200 |
