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EN 1.4821 Stainless Steel vs. S20431 Stainless Steel

Both EN 1.4821 stainless steel and S20431 stainless steel are iron alloys. They have 90% 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 1.4821 stainless steel and the bottom bar is S20431 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 200
210
Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 18
46
Fatigue Strength, MPa 280
320
Poisson's Ratio 0.27
0.28
Shear Modulus, GPa 79
76
Shear Strength, MPa 450
500
Tensile Strength: Ultimate (UTS), MPa 730
710
Tensile Strength: Yield (Proof), MPa 450
350

Thermal Properties

Latent Heat of Fusion, J/g 310
280
Maximum Temperature: Corrosion, °C 450
410
Maximum Temperature: Mechanical, °C 1100
890
Melting Completion (Liquidus), °C 1410
1400
Melting Onset (Solidus), °C 1370
1360
Specific Heat Capacity, J/kg-K 490
480
Thermal Conductivity, W/m-K 17
15
Thermal Expansion, µm/m-K 12
17

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 1.9
2.4
Electrical Conductivity: Equal Weight (Specific), % IACS 2.3
2.8

Otherwise Unclassified Properties

Base Metal Price, % relative 15
12
Density, g/cm3 7.6
7.7
Embodied Carbon, kg CO2/kg material 2.9
2.5
Embodied Energy, MJ/kg 41
36
Embodied Water, L/kg 160
140

Common Calculations

PREN (Pitting Resistance) 26
20
Resilience: Ultimate (Unit Rupture Work), MJ/m3 110
270
Resilience: Unit (Modulus of Resilience), kJ/m3 500
310
Stiffness to Weight: Axial, points 15
14
Stiffness to Weight: Bending, points 26
25
Strength to Weight: Axial, points 26
25
Strength to Weight: Bending, points 23
23
Thermal Diffusivity, mm2/s 4.6
4.0
Thermal Shock Resistance, points 21
15

Alloy Composition

Carbon (C), % 0.1 to 0.2
0 to 0.12
Chromium (Cr), % 24.5 to 26.5
17 to 18
Copper (Cu), % 0
1.5 to 3.5
Iron (Fe), % 64.2 to 71.1
66.1 to 74.4
Manganese (Mn), % 0 to 2.0
5.0 to 7.0
Nickel (Ni), % 3.5 to 5.5
2.0 to 4.0
Nitrogen (N), % 0 to 0.1
0.1 to 0.25
Phosphorus (P), % 0 to 0.040
0 to 0.045
Silicon (Si), % 0.8 to 1.5
0 to 1.0
Sulfur (S), % 0 to 0.015
0 to 0.030