DIN EN 1.4301 Material X5CrNi18-10 Stainless Steel Equivalent, Chemical Composition

DIN EN 1.4301 Material X5CrNi18-10 Stainless Steel
EN 1.4301 stainless steel pipe

EN 1.4301 Material Introduction

DIN EN 1.4301 material (steel name is X5CrNi18-10) is a universal austenitic stainless steel with good resistance to atmospheric, organic and inorganic chemicals. It is widely used due to its excellent intergranular corrosion resistance, good cold deformability, good deep drawability and weldability.

Corrosion Resistance

DIN EN 1.4301 stainless steel has good atmospheric corrosion resistance up to 300 °C, and good resistance to many (lightly corrosive) organic and inorganic chemicals. It can also be used at very low temperatures, but there are some limitations in marine, coastal and chloride-containing solutions.


EN X5CrNi18-10 is non-magnetic in the annealed state, but it may become slightly magnetic due to the addition of martensite or ferrite during cold working or welding.

X5CrNi18-10 Datasheet

DIN EN 1.4301 Chemical Composition (Cast Analysis)

The following table shows the chemical composition of 1.4301 material.

Chemical Composition %
StandardSteel Grade (Steel Number)C ≤Si ≤Mn ≤P ≤S ≤CrNiN ≤
EN 10088-3X5CrNi18-10 (1.4301)

Material X5CrNi18-10 Mechanical Properties

The following table shows X5CrNi18-10 mechanical properties of solution annealed.

Mechanical properties (solution annealed)
Country (Regions)StandardSteel Grade (Steel Number)Diameter (d) or Thickness (t) in mmHardness (HB)0.2% proof strength (N/mm2)1% proof strength (N/mm2)Tensile strength (N/mm2)Elongation (%)Impact energy (J)
European UnionEN 10088-3X5CrNi18-10 (1.4301)d≤160≤ 215≥ 190≥ 225500-70045≥ 100
160<t≤25035≥ 60
Mechanical properties for bright bars (solution annealed)
Country (Regions)StandardSteel Name (Material Number)Diameter (d) or Thickness (t) in mm0.2% proof strength (N/mm2)Tensile strength (N/mm2)Elongation (%)Impact energy (J)
European UnionEN 10088-3X5CrNi18-10 (1.4301)d≤10400600-95025

Physical Properties

  • Density: 7.9g/cm3
  • Electrical resistance: 0.73 (Ω mm2/m) at 20 °C
  • Specific heat capacity: 500 (J/kg K) at 20 °C
  • Thermal conductivity: 15 (W/m K) at 20 °C
  • Modulus of elasticity: 200 kN/mm2 at 20 °C
  • Thermal expansion (10-6 K-1):
    • 20 – 100 °C: 16.0
    • 20 – 200 °C: 16.5
    • 20 – 300 °C: 17.0
    • 20 – 400 °C: 17.5
    • 20 – 500 °C: 18.0


It can be easily welded by various conventional welding methods, but since 1.4301 material is not resistant to intergranular corrosion after welding, if it is necessary to weld larger parts and cannot perform solution annealing after welding, 1.4307 stainless steel should be selected. The surface state has a relatively large influence on the corrosion resistance of the steel, so that the polished surface generally has superior corrosion resistance than the rough surface.

Heat Treatment

  • Solution annealing: 1000 – 1100 ℃ (cooling: water, air)
  • Hot forming: 1200 to 900 ℃ (cooling: air)


1.4301 stainless steel cannot be hardened by heat treatment, but can be hardened by cold working.

Equivalent Grades

EN 1.4301 stainless steel (X5CrNi18-10) equivalent to US ASTM AISI SAE, ISO, European Union (Germany DIN, British BSI, France NF), Japanese JIS and Chinese GB standard (For reference).

EN 1.4301 (X5CrNi18-10) material equivalent
European UnionUSAISOChinaJapan
StandardSteel Name (Material Number)StandardGrade (UNS)StandardGradeStandardGradeStandardGrade
EN 10088-3;
EN 10088-1
X5CrNi18-10 (1.4301)AISI;
ASTM A240/A240M;
AISI 304 (S30400)ISO 15510X5CrNi18-10GB/T 20878;
GB/T 1220;
GB/T 3280
0Cr18Ni9 (Old designation)
JIS G4304SUS304


Due to its good corrosion resistance, processability and weldability, EN 1.4301 stainless steel is widely used in chemical, tableware, watches, auto parts, medical equipment, architectural decoration, aerospace and electrical appliances.


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