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EN 1.4401 Stainless Steel vs. EN 1.4903 Stainless Steel

Both EN 1.4401 stainless steel and EN 1.4903 stainless steel are iron alloys. They have 78% of their average alloy composition in common. There are 33 material properties with values for both materials. Properties with values for just one material (1, in this case) are not shown.

For each property being compared, the top bar is EN 1.4401 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, % 14 to 40
20 to 21
Fatigue Strength, MPa 200 to 320
320 to 330
Impact Strength: V-Notched Charpy, J 91 to 94
42 to 46
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 78
75
Shear Strength, MPa 410 to 550
420
Tensile Strength: Ultimate (UTS), MPa 600 to 900
670 to 680
Tensile Strength: Yield (Proof), MPa 230 to 570
500

Thermal Properties

Latent Heat of Fusion, J/g 290
270
Maximum Temperature: Corrosion, °C 410
380
Maximum Temperature: Mechanical, °C 950
650
Melting Completion (Liquidus), °C 1440
1460
Melting Onset (Solidus), °C 1400
1420
Specific Heat Capacity, J/kg-K 470
470
Thermal Conductivity, W/m-K 15
26
Thermal Expansion, µm/m-K 16
11

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.3
3.4
Electrical Conductivity: Equal Weight (Specific), % IACS 2.6
4.0

Otherwise Unclassified Properties

Base Metal Price, % relative 19
7.0
Density, g/cm3 7.9
7.8
Embodied Carbon, kg CO2/kg material 3.8
2.6
Embodied Energy, MJ/kg 52
36
Embodied Water, L/kg 150
88

Common Calculations

PREN (Pitting Resistance) 26
13
Resilience: Ultimate (Unit Rupture Work), MJ/m3 110 to 190
120 to 130
Resilience: Unit (Modulus of Resilience), kJ/m3 130 to 800
650
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 21 to 32
24
Strength to Weight: Bending, points 20 to 26
22
Thermal Diffusivity, mm2/s 4.0
7.0
Thermal Shock Resistance, points 13 to 20
23

Alloy Composition

Aluminum (Al), % 0
0 to 0.040
Carbon (C), % 0 to 0.070
0.080 to 0.12
Chromium (Cr), % 16.5 to 18.5
8.0 to 9.5
Copper (Cu), % 0
0 to 0.3
Iron (Fe), % 62.8 to 71.5
87.1 to 90.5
Manganese (Mn), % 0 to 2.0
0.3 to 0.6
Molybdenum (Mo), % 2.0 to 2.5
0.85 to 1.1
Nickel (Ni), % 10 to 13
0 to 0.4
Niobium (Nb), % 0
0.060 to 0.1
Nitrogen (N), % 0 to 0.1
0.030 to 0.070
Phosphorus (P), % 0 to 0.045
0 to 0.025
Silicon (Si), % 0 to 1.0
0 to 0.5
Sulfur (S), % 0 to 0.015
0 to 0.015
Vanadium (V), % 0
0.18 to 0.25

Comparable Variants