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

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EN 1.4301 Stainless Steel (X5CrNi18-10)

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

1.4306 (X2CrNi19-11) and 1.4307 (X2CrNi18-9) are ultra-low carbon versions of 1.4301. The purpose is to improve the corrosion resistance after welding and prevent carbide precipitation caused by stress relief for a long time.

DIN 1.4301 Magnetic

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

The following tables and lists give the SS 1.4301 datasheet including chemical composition, physical properties and mechanical properties etc.

DIN EN 1.4301 Chemical Composition

The following table shows the chemical composition of 1.4301 material base on cast analysis.

Chemical Composition, %
Country (Region)StandardSteel Grade (Material Number)C, ≤Si, ≤Mn, ≤P, ≤S, ≤CrNiN, ≤
European UnionEN 10088-2X5CrNi18-10 (1.4301)0.071.002.000.0450.01517.5-19.58.0-10.50.10
EN 10088-30.071.002.000.0450.03017.5-19.58.0-10.50.10

Notes:

  • EN 10088-2: Technical delivery conditions for stainless steel sheet/plate and strip of corrosion resisting steels for general purposes; Particular ranges of sulfur content may provide improvement of particular properties. For machinability a controlled sulfur content of 0,015 % to 0,030 % is recommended and permitted. For weldability, a controlled sulfur content of 0,008 % to 0,015 % is recommended and permitted. For polishability, a controlled sulfur content of 0,015 % max is recommended.
  • EN 10088-3: Technical delivery conditions for semi‑finished stainless steel products, bars, rods, wire, sections and bright products of corrosion resisting steels for general purposes.

Material X5CrNi18-10 Mechanical Properties

The following table gives the SS 1.4301 mechanical properties in the solution-annealed condition for steel sheet, steel plate and steel strip.

StandardSteel Name (Steel Number)Product ConditionThickness (mm), ≤0,2 % proof strength (Mpa), (Transverse)1 % proof strength (Mpa), (Transverse)Tensile strength (MPa)Elongation (%), < 3mm thickElongation %, ≥ 4mm thickImpact energy (J) KV2
> 10mm thick (Longitudinal)
Impact energy (J) KV2
> 10mm thick (Transverse)
EN 10088-2X5CrNi18-10 (1.4301)cold rolled strip8≥230≥260540-750≥45≥45
hot rolled strip13.5≥210≥250520-72010060
hot rolled plate75≥210≥250520-72010060

The following tables show X5CrNi18-10 mechanical properties of solution annealed in conditions 1C, 1E, 1D, 1X, 1G and 2D.

Mechanical properties (solution annealed)
StandardSteel Grade (Steel Number)Diameter (d) or Thickness (t) in mmHardness (HB)0.2% yield strength (MPa)1% yield strength (MPa)Tensile strength (MPa)Elongation (≥ %)Impact energy (J)
EN10088-3X5CrNi18-10d≤160≤ 215≥ 190≥ 225500-70045 (long.)≥ 100 (long.)
160<t≤25035 (tr.)≥ 60 (tr.)
Mechanical properties for bright bars (solution annealed) in conditions 2H, 2B, 2G or 2P
StandardSteel Name (Material Number)Diameter (d) or Thickness (t) in mm0.2% proof strength (MPa)Tensile strength (MPa)Elongation (long.), (≥ %)Impact energy (long.), (J)
EN10088-3X5CrNi18-10 (1.4301)d≤10400600-95025
10<t≤16400600-95025
16<t≤40190600-85030100
40<t≤63190580-85030100
63<t≤160190500-70045100
160<t≤250190500-70035 (tr.)60 (tr.)
Mechanical properties at different temperatures (solution annealed)
StandardSteel (Material Number)Temperature, °C (°F)0,2 % yield strength, MPa, ≥1 % yield strength, MPa, ≥
EN 10088-2;
EN 10088-3
X5CrNi18-10 (1.4301)100157191
150142172
200127157
250118145
300110135
350104129
40098125
45095122
50092120
55090120

Physical Properties

Notes:

  • 10-6·K-1 = 10-6/K
  • 1 Ω·mm²/m = 1 μΩ·m
  • 1 g/cm3 = 1 kg/dm3 = 1000 kg/m3
  • 1 GPa = 1 kN/mm2
  • 1 MPa = 1 N/mm2
Physical Properties
Density, g/cm3 (lb/in.3)7.9 (0.29)
Melting point, °C (°F)1400-1455 (2550-2650)
Specific heat capacity, J/kg·K (Btu/lb ·°F)500 (0.12) at 20℃ (68 °F)
Electrical resistivity, μΩ·m0.73 at 20℃ (68 °F)
MagneticNo
Magnetic permeability1.02 (Approximate)
Elastic modulus / Modulus of elasticity,  GPa (103 ksi)200 (29) at 20℃ (68 °F)
194 (28) at 100 °C (212 °F)
186 (27) at 200 °C (392 °F)
179 (26) at 300 °C (572 °F)
172 (25) at 400 °C (752 °F)
165 (24) at 500 °C (932 °F)
Thermal conductivity, W/m·K (Btu/ft · h ·°F)15 (8.67) at 20 °C (68 °F)
Coefficient of thermal expansion, 10-6/K16.0 at 20-100 ℃ (68-212 °F)
16.5 at 20-200 ℃ (68-392 °F)
17.0 at 20-300 °C (68-572 °F)
17.5 at 20-400 °C (68-752 °F)
18.0 at 20-500 °C (68-932 °F)

Welding

EN 1.4301 stainless steel can be easily welded by various conventional welding methods, but since the 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.

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.

Heat Treatment

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

Hardening

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

Applications

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.

DIN 1.4301 Material 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 X5CrNi18-10 material equivalent
European UnionUSISOChinaJapan
StandardSteel Name (Material Number)StandardGrade (UNS)StandardGradeStandardGradeStandardGrade
EN 10088-2; EN 10088-3;
EN 10088-1
X5CrNi18-10 (1.4301)AISI;
ASTM A240/A240M;
A276/A276M
AISI 304 (UNS S30400)ISO 15510X5CrNi18-10GB/T 20878;
GB/T 1220;
GB/T 3280
06Cr19Ni10;
0Cr18Ni9 (Old designation)
JIS G4304SUS304

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