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S41045 Stainless Steel vs. EN 1.4490 Stainless Steel

Both S41045 stainless steel and EN 1.4490 stainless steel are iron alloys. They have 80% of their average alloy composition in common. There are 31 material properties with values for both materials. Properties with values for just one material (4, in this case) are not shown.

For each property being compared, the top bar is S41045 stainless steel and the bottom bar is EN 1.4490 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
200
Elongation at Break, % 25
34
Fatigue Strength, MPa 160
210
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 76
78
Tensile Strength: Ultimate (UTS), MPa 430
560
Tensile Strength: Yield (Proof), MPa 230
260

Thermal Properties

Latent Heat of Fusion, J/g 270
300
Maximum Temperature: Corrosion, °C 430
420
Maximum Temperature: Mechanical, °C 740
990
Melting Completion (Liquidus), °C 1450
1440
Melting Onset (Solidus), °C 1400
1390
Specific Heat Capacity, J/kg-K 480
480
Thermal Conductivity, W/m-K 29
15
Thermal Expansion, µm/m-K 10
12

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.9
2.1
Electrical Conductivity: Equal Weight (Specific), % IACS 3.3
2.5

Otherwise Unclassified Properties

Base Metal Price, % relative 8.5
19
Density, g/cm3 7.8
7.8
Embodied Carbon, kg CO2/kg material 2.2
3.7
Embodied Energy, MJ/kg 31
52
Embodied Water, L/kg 100
150

Common Calculations

PREN (Pitting Resistance) 13
29
Resilience: Ultimate (Unit Rupture Work), MJ/m3 92
160
Resilience: Unit (Modulus of Resilience), kJ/m3 140
170
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 16
20
Strength to Weight: Bending, points 16
19
Thermal Diffusivity, mm2/s 7.8
4.1
Thermal Shock Resistance, points 16
16

Alloy Composition

Carbon (C), % 0 to 0.030
0 to 0.030
Chromium (Cr), % 12 to 13
18 to 20
Iron (Fe), % 83.8 to 88
61.7 to 70.9
Manganese (Mn), % 0 to 1.0
0 to 2.0
Molybdenum (Mo), % 0
2.0 to 2.5
Nickel (Ni), % 0 to 0.5
9.0 to 12
Niobium (Nb), % 0 to 0.6
0
Nitrogen (N), % 0 to 0.030
0.12 to 0.2
Phosphorus (P), % 0 to 0.040
0 to 0.035
Silicon (Si), % 0 to 1.0
0 to 1.5
Sulfur (S), % 0 to 0.030
0 to 0.030