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AISI 444 Stainless Steel vs. EN 1.4903 Stainless Steel

Both AISI 444 stainless steel and EN 1.4903 stainless steel are iron alloys. They have 88% 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 AISI 444 stainless steel and the bottom bar is EN 1.4903 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
190
Elongation at Break, % 23
20 to 21
Fatigue Strength, MPa 210
320 to 330
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 78
75
Shear Strength, MPa 300
420
Tensile Strength: Ultimate (UTS), MPa 470
670 to 680
Tensile Strength: Yield (Proof), MPa 310
500

Thermal Properties

Latent Heat of Fusion, J/g 290
270
Maximum Temperature: Corrosion, °C 580
380
Maximum Temperature: Mechanical, °C 930
650
Melting Completion (Liquidus), °C 1460
1460
Melting Onset (Solidus), °C 1420
1420
Specific Heat Capacity, J/kg-K 480
470
Thermal Conductivity, W/m-K 23
26
Thermal Expansion, µm/m-K 10
11

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.2
3.4
Electrical Conductivity: Equal Weight (Specific), % IACS 2.5
4.0

Otherwise Unclassified Properties

Base Metal Price, % relative 15
7.0
Density, g/cm3 7.7
7.8
Embodied Carbon, kg CO2/kg material 3.4
2.6
Embodied Energy, MJ/kg 47
36
Embodied Water, L/kg 130
88

Common Calculations

PREN (Pitting Resistance) 26
13
Resilience: Ultimate (Unit Rupture Work), MJ/m3 95
120 to 130
Resilience: Unit (Modulus of Resilience), kJ/m3 240
650
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 17
24
Strength to Weight: Bending, points 17
22
Thermal Diffusivity, mm2/s 6.2
7.0
Thermal Shock Resistance, points 16
23

Alloy Composition

Aluminum (Al), % 0
0 to 0.040
Carbon (C), % 0 to 0.025
0.080 to 0.12
Chromium (Cr), % 17.5 to 19.5
8.0 to 9.5
Copper (Cu), % 0
0 to 0.3
Iron (Fe), % 73.3 to 80.8
87.1 to 90.5
Manganese (Mn), % 0 to 1.0
0.3 to 0.6
Molybdenum (Mo), % 1.8 to 2.5
0.85 to 1.1
Nickel (Ni), % 0 to 1.0
0 to 0.4
Niobium (Nb), % 0.2 to 0.8
0.060 to 0.1
Nitrogen (N), % 0 to 0.035
0.030 to 0.070
Phosphorus (P), % 0 to 0.040
0 to 0.025
Silicon (Si), % 0 to 1.0
0 to 0.5
Sulfur (S), % 0 to 0.030
0 to 0.015
Titanium (Ti), % 0.2 to 0.8
0
Vanadium (V), % 0
0.18 to 0.25