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EN 1.4439 Stainless Steel vs. AISI 403 Stainless Steel

Both EN 1.4439 stainless steel and AISI 403 stainless steel are iron alloys. They have 76% of their average alloy composition in common. There are 33 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 EN 1.4439 stainless steel and the bottom bar is AISI 403 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 220
190 to 240
Elastic (Young's, Tensile) Modulus, GPa 200
190
Elongation at Break, % 40
16 to 25
Fatigue Strength, MPa 270
200 to 340
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 79
76
Shear Strength, MPa 470
340 to 480
Tensile Strength: Ultimate (UTS), MPa 680
530 to 780
Tensile Strength: Yield (Proof), MPa 310
280 to 570

Thermal Properties

Latent Heat of Fusion, J/g 290
270
Maximum Temperature: Corrosion, °C 410
390
Maximum Temperature: Mechanical, °C 980
740
Melting Completion (Liquidus), °C 1460
1450
Melting Onset (Solidus), °C 1410
1400
Specific Heat Capacity, J/kg-K 470
480
Thermal Conductivity, W/m-K 14
28
Thermal Expansion, µm/m-K 16
9.9

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.0
2.9
Electrical Conductivity: Equal Weight (Specific), % IACS 2.3
3.3

Otherwise Unclassified Properties

Base Metal Price, % relative 22
6.5
Density, g/cm3 7.9
7.8
Embodied Carbon, kg CO2/kg material 4.5
1.9
Embodied Energy, MJ/kg 61
27
Embodied Water, L/kg 160
99

Common Calculations

PREN (Pitting Resistance) 35
12
Resilience: Ultimate (Unit Rupture Work), MJ/m3 220
110 to 120
Resilience: Unit (Modulus of Resilience), kJ/m3 240
210 to 840
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 24
19 to 28
Strength to Weight: Bending, points 22
19 to 24
Thermal Diffusivity, mm2/s 3.8
7.6
Thermal Shock Resistance, points 15
20 to 29

Alloy Composition

Carbon (C), % 0 to 0.030
0 to 0.15
Chromium (Cr), % 16.5 to 18.5
11.5 to 13
Iron (Fe), % 58.7 to 66.9
84.7 to 88.5
Manganese (Mn), % 0 to 2.0
0 to 1.0
Molybdenum (Mo), % 4.0 to 5.0
0
Nickel (Ni), % 12.5 to 14.5
0 to 0.6
Nitrogen (N), % 0.12 to 0.22
0
Phosphorus (P), % 0 to 0.045
0 to 0.040
Silicon (Si), % 0 to 1.0
0 to 0.5
Sulfur (S), % 0 to 0.015
0 to 0.030