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AISI 444 Stainless Steel vs. EN 1.4031 Stainless Steel

Both AISI 444 stainless steel and EN 1.4031 stainless steel are iron alloys. They have a moderately high 92% 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 AISI 444 stainless steel and the bottom bar is EN 1.4031 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
190
Elongation at Break, % 23
11 to 13
Fatigue Strength, MPa 210
220 to 400
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 78
76
Shear Strength, MPa 300
400 to 540
Tensile Strength: Ultimate (UTS), MPa 470
670 to 900
Tensile Strength: Yield (Proof), MPa 310
390 to 730

Thermal Properties

Latent Heat of Fusion, J/g 290
280
Maximum Temperature: Corrosion, °C 580
390
Maximum Temperature: Mechanical, °C 930
770
Melting Completion (Liquidus), °C 1460
1440
Melting Onset (Solidus), °C 1420
1400
Specific Heat Capacity, J/kg-K 480
480
Thermal Conductivity, W/m-K 23
30
Thermal Expansion, µm/m-K 10
11

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.2
3.1
Electrical Conductivity: Equal Weight (Specific), % IACS 2.5
3.7

Otherwise Unclassified Properties

Base Metal Price, % relative 15
7.0
Density, g/cm3 7.7
7.7
Embodied Carbon, kg CO2/kg material 3.4
1.9
Embodied Energy, MJ/kg 47
27
Embodied Water, L/kg 130
100

Common Calculations

PREN (Pitting Resistance) 26
14
Resilience: Ultimate (Unit Rupture Work), MJ/m3 95
77 to 94
Resilience: Unit (Modulus of Resilience), kJ/m3 240
380 to 1360
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 17
24 to 32
Strength to Weight: Bending, points 17
22 to 27
Thermal Diffusivity, mm2/s 6.2
8.1
Thermal Shock Resistance, points 16
23 to 32

Alloy Composition

Carbon (C), % 0 to 0.025
0.36 to 0.42
Chromium (Cr), % 17.5 to 19.5
12.5 to 14.5
Iron (Fe), % 73.3 to 80.8
83 to 87.1
Manganese (Mn), % 0 to 1.0
0 to 1.0
Molybdenum (Mo), % 1.8 to 2.5
0
Nickel (Ni), % 0 to 1.0
0
Niobium (Nb), % 0.2 to 0.8
0
Nitrogen (N), % 0 to 0.035
0
Phosphorus (P), % 0 to 0.040
0 to 0.040
Silicon (Si), % 0 to 1.0
0 to 1.0
Sulfur (S), % 0 to 0.030
0 to 0.015
Titanium (Ti), % 0.2 to 0.8
0