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EN 1.4618 Stainless Steel vs. S43940 Stainless Steel

Both EN 1.4618 stainless steel and S43940 stainless steel are iron alloys. They have 86% of their average alloy composition in common. There are 33 material properties with values for both materials. Properties with values for just one material (2, in this case) are not shown.

For each property being compared, the top bar is EN 1.4618 stainless steel and the bottom bar is S43940 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 200 to 210
160
Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 51
21
Fatigue Strength, MPa 240 to 250
180
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 77
77
Shear Strength, MPa 480 to 500
310
Tensile Strength: Ultimate (UTS), MPa 680 to 700
490
Tensile Strength: Yield (Proof), MPa 250 to 260
280

Thermal Properties

Latent Heat of Fusion, J/g 280
280
Maximum Temperature: Corrosion, °C 410
540
Maximum Temperature: Mechanical, °C 900
890
Melting Completion (Liquidus), °C 1400
1440
Melting Onset (Solidus), °C 1360
1400
Specific Heat Capacity, J/kg-K 480
480
Thermal Conductivity, W/m-K 15
25
Thermal Expansion, µm/m-K 16
10

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.4
2.9
Electrical Conductivity: Equal Weight (Specific), % IACS 2.7
3.4

Otherwise Unclassified Properties

Base Metal Price, % relative 13
12
Density, g/cm3 7.7
7.7
Embodied Carbon, kg CO2/kg material 2.7
2.6
Embodied Energy, MJ/kg 39
38
Embodied Water, L/kg 150
120

Common Calculations

PREN (Pitting Resistance) 19
18
Resilience: Ultimate (Unit Rupture Work), MJ/m3 270 to 280
86
Resilience: Unit (Modulus of Resilience), kJ/m3 160 to 170
200
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 24 to 25
18
Strength to Weight: Bending, points 22 to 23
18
Thermal Diffusivity, mm2/s 4.0
6.8
Thermal Shock Resistance, points 15 to 16
18

Alloy Composition

Carbon (C), % 0 to 0.1
0 to 0.030
Chromium (Cr), % 16.5 to 18.5
17.5 to 18.5
Copper (Cu), % 1.0 to 2.5
0
Iron (Fe), % 62.7 to 72.5
78.2 to 82.1
Manganese (Mn), % 5.5 to 9.5
0 to 1.0
Nickel (Ni), % 4.5 to 5.5
0
Niobium (Nb), % 0
0.3 to 0.6
Nitrogen (N), % 0 to 0.15
0
Phosphorus (P), % 0 to 0.070
0 to 0.040
Silicon (Si), % 0 to 1.0
0 to 1.0
Sulfur (S), % 0 to 0.010
0 to 0.015
Titanium (Ti), % 0
0.1 to 0.6