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EN 1.4618 Stainless Steel vs. S40945 Stainless Steel

Both EN 1.4618 stainless steel and S40945 stainless steel are iron alloys. They have 80% 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 S40945 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 200 to 210
160
Elastic (Young's, Tensile) Modulus, GPa 200
190
Elongation at Break, % 51
25
Fatigue Strength, MPa 240 to 250
160
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 77
75
Shear Strength, MPa 480 to 500
270
Tensile Strength: Ultimate (UTS), MPa 680 to 700
430
Tensile Strength: Yield (Proof), MPa 250 to 260
230

Thermal Properties

Latent Heat of Fusion, J/g 280
270
Maximum Temperature: Corrosion, °C 410
450
Maximum Temperature: Mechanical, °C 900
710
Melting Completion (Liquidus), °C 1400
1450
Melting Onset (Solidus), °C 1360
1410
Specific Heat Capacity, J/kg-K 480
480
Thermal Conductivity, W/m-K 15
26
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
3.3

Otherwise Unclassified Properties

Base Metal Price, % relative 13
8.0
Density, g/cm3 7.7
7.8
Embodied Carbon, kg CO2/kg material 2.7
2.2
Embodied Energy, MJ/kg 39
31
Embodied Water, L/kg 150
94

Common Calculations

PREN (Pitting Resistance) 19
11
Resilience: Ultimate (Unit Rupture Work), MJ/m3 270 to 280
89
Resilience: Unit (Modulus of Resilience), kJ/m3 160 to 170
140
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 24 to 25
15
Strength to Weight: Bending, points 22 to 23
16
Thermal Diffusivity, mm2/s 4.0
6.9
Thermal Shock Resistance, points 15 to 16
15

Alloy Composition

Carbon (C), % 0 to 0.1
0 to 0.030
Chromium (Cr), % 16.5 to 18.5
10.5 to 11.7
Copper (Cu), % 1.0 to 2.5
0
Iron (Fe), % 62.7 to 72.5
85.1 to 89.3
Manganese (Mn), % 5.5 to 9.5
0 to 1.0
Nickel (Ni), % 4.5 to 5.5
0 to 0.5
Niobium (Nb), % 0
0.18 to 0.4
Nitrogen (N), % 0 to 0.15
0 to 0.030
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 0.030
Titanium (Ti), % 0
0.050 to 0.2