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EN 1.4415 Stainless Steel vs. S40945 Stainless Steel

Both EN 1.4415 stainless steel and S40945 stainless steel are iron alloys. They have a moderately high 91% of their average alloy composition in common. There are 32 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 1.4415 stainless steel and the bottom bar is S40945 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
190
Elongation at Break, % 17 to 20
25
Fatigue Strength, MPa 470 to 510
160
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 77
75
Shear Strength, MPa 520 to 570
270
Tensile Strength: Ultimate (UTS), MPa 830 to 930
430
Tensile Strength: Yield (Proof), MPa 730 to 840
230

Thermal Properties

Latent Heat of Fusion, J/g 280
270
Maximum Temperature: Corrosion, °C 390
450
Maximum Temperature: Mechanical, °C 790
710
Melting Completion (Liquidus), °C 1460
1450
Melting Onset (Solidus), °C 1420
1410
Specific Heat Capacity, J/kg-K 470
480
Thermal Conductivity, W/m-K 19
26
Thermal Expansion, µm/m-K 9.9
10

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.4
2.9
Electrical Conductivity: Equal Weight (Specific), % IACS 2.8
3.3

Otherwise Unclassified Properties

Base Metal Price, % relative 13
8.0
Density, g/cm3 7.9
7.8
Embodied Carbon, kg CO2/kg material 3.6
2.2
Embodied Energy, MJ/kg 51
31
Embodied Water, L/kg 120
94

Common Calculations

PREN (Pitting Resistance) 19
11
Resilience: Ultimate (Unit Rupture Work), MJ/m3 150 to 160
89
Resilience: Unit (Modulus of Resilience), kJ/m3 1350 to 1790
140
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 29 to 33
15
Strength to Weight: Bending, points 25 to 27
16
Thermal Diffusivity, mm2/s 5.1
6.9
Thermal Shock Resistance, points 30 to 34
15

Alloy Composition

Carbon (C), % 0 to 0.030
0 to 0.030
Chromium (Cr), % 11.5 to 13.5
10.5 to 11.7
Iron (Fe), % 75.9 to 82.4
85.1 to 89.3
Manganese (Mn), % 0 to 0.5
0 to 1.0
Molybdenum (Mo), % 1.5 to 2.5
0
Nickel (Ni), % 4.5 to 6.5
0 to 0.5
Niobium (Nb), % 0
0.18 to 0.4
Nitrogen (N), % 0
0 to 0.030
Phosphorus (P), % 0 to 0.040
0 to 0.040
Silicon (Si), % 0 to 0.5
0 to 1.0
Sulfur (S), % 0 to 0.015
0 to 0.030
Titanium (Ti), % 0 to 0.010
0.050 to 0.2
Vanadium (V), % 0.1 to 0.5
0