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EN 1.4594 Stainless Steel vs. S40945 Stainless Steel

Both EN 1.4594 stainless steel and S40945 stainless steel are iron alloys. They have 89% of their average alloy composition in common. There are 32 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 1.4594 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, % 11 to 17
25
Fatigue Strength, MPa 490 to 620
160
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 76
75
Shear Strength, MPa 620 to 700
270
Tensile Strength: Ultimate (UTS), MPa 1020 to 1170
430
Tensile Strength: Yield (Proof), MPa 810 to 1140
230

Thermal Properties

Latent Heat of Fusion, J/g 280
270
Maximum Temperature: Corrosion, °C 450
450
Maximum Temperature: Mechanical, °C 820
710
Melting Completion (Liquidus), °C 1450
1450
Melting Onset (Solidus), °C 1410
1410
Specific Heat Capacity, J/kg-K 470
480
Thermal Conductivity, W/m-K 16
26
Thermal Expansion, µm/m-K 11
10

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.2
2.9
Electrical Conductivity: Equal Weight (Specific), % IACS 2.5
3.3

Otherwise Unclassified Properties

Base Metal Price, % relative 15
8.0
Density, g/cm3 7.9
7.8
Embodied Carbon, kg CO2/kg material 3.2
2.2
Embodied Energy, MJ/kg 45
31
Embodied Water, L/kg 130
94

Common Calculations

PREN (Pitting Resistance) 19
11
Resilience: Ultimate (Unit Rupture Work), MJ/m3 110 to 190
89
Resilience: Unit (Modulus of Resilience), kJ/m3 1660 to 3320
140
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 36 to 41
15
Strength to Weight: Bending, points 29 to 31
16
Thermal Diffusivity, mm2/s 4.4
6.9
Thermal Shock Resistance, points 34 to 39
15

Alloy Composition

Carbon (C), % 0 to 0.070
0 to 0.030
Chromium (Cr), % 13 to 15
10.5 to 11.7
Copper (Cu), % 1.2 to 2.0
0
Iron (Fe), % 72.6 to 79.5
85.1 to 89.3
Manganese (Mn), % 0 to 1.0
0 to 1.0
Molybdenum (Mo), % 1.2 to 2.0
0
Nickel (Ni), % 5.0 to 6.0
0 to 0.5
Niobium (Nb), % 0.15 to 0.6
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 0.7
0 to 1.0
Sulfur (S), % 0 to 0.015
0 to 0.030
Titanium (Ti), % 0
0.050 to 0.2