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EN 1.4818 Stainless Steel vs. S17400 Stainless Steel

Both EN 1.4818 stainless steel and S17400 stainless steel are iron alloys. They have 90% of their average alloy composition in common. There are 33 material properties with values for both materials. Properties with values for just one material (3, in this case) are not shown.

For each property being compared, the top bar is EN 1.4818 stainless steel and the bottom bar is S17400 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 180
280 to 440
Elastic (Young's, Tensile) Modulus, GPa 200
190
Elongation at Break, % 40
11 to 21
Fatigue Strength, MPa 280
380 to 670
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 77
75
Shear Strength, MPa 480
570 to 830
Tensile Strength: Ultimate (UTS), MPa 700
910 to 1390
Tensile Strength: Yield (Proof), MPa 330
580 to 1250

Thermal Properties

Latent Heat of Fusion, J/g 300
280
Maximum Temperature: Corrosion, °C 420
450
Maximum Temperature: Mechanical, °C 1050
850
Melting Completion (Liquidus), °C 1410
1440
Melting Onset (Solidus), °C 1370
1400
Specific Heat Capacity, J/kg-K 490
480
Thermal Conductivity, W/m-K 17
17
Thermal Expansion, µm/m-K 17
11

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.0
2.3
Electrical Conductivity: Equal Weight (Specific), % IACS 2.4
2.6

Otherwise Unclassified Properties

Base Metal Price, % relative 16
14
Density, g/cm3 7.7
7.8
Embodied Carbon, kg CO2/kg material 3.1
2.7
Embodied Energy, MJ/kg 44
39
Embodied Water, L/kg 150
130

Common Calculations

PREN (Pitting Resistance) 22
16
Resilience: Ultimate (Unit Rupture Work), MJ/m3 230
140 to 160
Resilience: Unit (Modulus of Resilience), kJ/m3 270
880 to 4060
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 25
32 to 49
Strength to Weight: Bending, points 23
27 to 35
Thermal Diffusivity, mm2/s 4.5
4.5
Thermal Shock Resistance, points 15
30 to 46

Alloy Composition

Carbon (C), % 0.040 to 0.080
0 to 0.070
Cerium (Ce), % 0.030 to 0.080
0
Chromium (Cr), % 18 to 20
15 to 17
Copper (Cu), % 0
3.0 to 5.0
Iron (Fe), % 65.6 to 71.8
70.4 to 78.9
Manganese (Mn), % 0 to 1.0
0 to 1.0
Nickel (Ni), % 9.0 to 11
3.0 to 5.0
Niobium (Nb), % 0
0.15 to 0.45
Nitrogen (N), % 0.12 to 0.2
0
Phosphorus (P), % 0 to 0.045
0 to 0.040
Silicon (Si), % 1.0 to 2.0
0 to 1.0
Sulfur (S), % 0 to 0.015
0 to 0.030