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EN 1.4421 Stainless Steel vs. EN 1.4872 Stainless Steel

Both EN 1.4421 stainless steel and EN 1.4872 stainless steel are iron alloys. They have 80% of their average alloy composition in common. There are 31 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 1.4421 stainless steel and the bottom bar is EN 1.4872 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 11 to 17
28
Fatigue Strength, MPa 380 to 520
410
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 77
79
Tensile Strength: Ultimate (UTS), MPa 880 to 1100
950
Tensile Strength: Yield (Proof), MPa 620 to 950
560

Thermal Properties

Latent Heat of Fusion, J/g 280
300
Maximum Temperature: Corrosion, °C 410
440
Maximum Temperature: Mechanical, °C 870
1150
Melting Completion (Liquidus), °C 1440
1390
Melting Onset (Solidus), °C 1400
1340
Specific Heat Capacity, J/kg-K 480
490
Thermal Conductivity, W/m-K 16
15
Thermal Expansion, µm/m-K 10
16

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.2
2.3
Electrical Conductivity: Equal Weight (Specific), % IACS 2.5
2.7

Otherwise Unclassified Properties

Base Metal Price, % relative 12
17
Density, g/cm3 7.8
7.6
Embodied Carbon, kg CO2/kg material 2.6
3.3
Embodied Energy, MJ/kg 36
47
Embodied Water, L/kg 130
180

Common Calculations

PREN (Pitting Resistance) 18
30
Resilience: Ultimate (Unit Rupture Work), MJ/m3 120 to 140
230
Resilience: Unit (Modulus of Resilience), kJ/m3 960 to 2270
780
Stiffness to Weight: Axial, points 14
15
Stiffness to Weight: Bending, points 25
26
Strength to Weight: Axial, points 31 to 39
35
Strength to Weight: Bending, points 26 to 30
28
Thermal Diffusivity, mm2/s 4.4
3.9
Thermal Shock Resistance, points 31 to 39
21

Alloy Composition

Carbon (C), % 0 to 0.060
0.2 to 0.3
Chromium (Cr), % 15.5 to 17.5
24 to 26
Iron (Fe), % 74.4 to 80.5
54.2 to 61.6
Manganese (Mn), % 0 to 1.0
8.0 to 10
Molybdenum (Mo), % 0 to 0.7
0
Nickel (Ni), % 4.0 to 5.5
6.0 to 8.0
Nitrogen (N), % 0
0.2 to 0.4
Phosphorus (P), % 0 to 0.035
0 to 0.045
Silicon (Si), % 0 to 0.8
0 to 1.0
Sulfur (S), % 0 to 0.020
0 to 0.015