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EN 1.4404 Stainless Steel vs. SAE-AISI 1090 Steel

Both EN 1.4404 stainless steel and SAE-AISI 1090 steel are iron alloys. They have 68% 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 EN 1.4404 stainless steel and the bottom bar is SAE-AISI 1090 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 190 to 270
220 to 280
Elastic (Young's, Tensile) Modulus, GPa 200
190
Elongation at Break, % 14 to 43
11
Fatigue Strength, MPa 220 to 320
320 to 380
Poisson's Ratio 0.28
0.29
Shear Modulus, GPa 78
72
Shear Strength, MPa 420 to 550
470 to 570
Tensile Strength: Ultimate (UTS), MPa 600 to 900
790 to 950
Tensile Strength: Yield (Proof), MPa 240 to 570
520 to 610

Thermal Properties

Latent Heat of Fusion, J/g 290
240
Maximum Temperature: Mechanical, °C 950
400
Melting Completion (Liquidus), °C 1440
1450
Melting Onset (Solidus), °C 1400
1410
Specific Heat Capacity, J/kg-K 470
470
Thermal Conductivity, W/m-K 15
50
Thermal Expansion, µm/m-K 16
12

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.3
7.1
Electrical Conductivity: Equal Weight (Specific), % IACS 2.6
8.2

Otherwise Unclassified Properties

Base Metal Price, % relative 19
1.8
Density, g/cm3 7.9
7.8
Embodied Carbon, kg CO2/kg material 3.8
1.4
Embodied Energy, MJ/kg 52
19
Embodied Water, L/kg 150
46

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 110 to 210
82 to 91
Resilience: Unit (Modulus of Resilience), kJ/m3 140 to 800
730 to 1000
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 25
24
Strength to Weight: Axial, points 21 to 32
28 to 34
Strength to Weight: Bending, points 20 to 26
24 to 27
Thermal Diffusivity, mm2/s 4.0
13
Thermal Shock Resistance, points 13 to 20
25 to 31

Alloy Composition

Carbon (C), % 0 to 0.030
0.85 to 1.0
Chromium (Cr), % 16.5 to 18.5
0
Iron (Fe), % 62.8 to 71.5
98 to 98.6
Manganese (Mn), % 0 to 2.0
0.6 to 0.9
Molybdenum (Mo), % 2.0 to 2.5
0
Nickel (Ni), % 10 to 13
0
Nitrogen (N), % 0 to 0.1
0
Phosphorus (P), % 0 to 0.045
0 to 0.040
Silicon (Si), % 0 to 1.0
0
Sulfur (S), % 0 to 0.015
0 to 0.050

Comparable Variants