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S82121 Stainless Steel vs. EN 1.4439 Stainless Steel

Both S82121 stainless steel and EN 1.4439 stainless steel are iron alloys. They have 86% of their average alloy composition in common. There are 33 material properties with values for both materials. Properties with values for just one material (2, in this case) are not shown.

For each property being compared, the top bar is S82121 stainless steel and the bottom bar is EN 1.4439 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 250
220
Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 28
40
Fatigue Strength, MPa 370
270
Poisson's Ratio 0.27
0.28
Shear Modulus, GPa 78
79
Shear Strength, MPa 470
470
Tensile Strength: Ultimate (UTS), MPa 730
680
Tensile Strength: Yield (Proof), MPa 510
310

Thermal Properties

Latent Heat of Fusion, J/g 290
290
Maximum Temperature: Corrosion, °C 430
410
Maximum Temperature: Mechanical, °C 1020
980
Melting Completion (Liquidus), °C 1430
1460
Melting Onset (Solidus), °C 1380
1410
Specific Heat Capacity, J/kg-K 480
470
Thermal Conductivity, W/m-K 15
14
Thermal Expansion, µm/m-K 13
16

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.2
2.0
Electrical Conductivity: Equal Weight (Specific), % IACS 2.5
2.3

Otherwise Unclassified Properties

Base Metal Price, % relative 14
22
Density, g/cm3 7.7
7.9
Embodied Carbon, kg CO2/kg material 2.8
4.5
Embodied Energy, MJ/kg 40
61
Embodied Water, L/kg 150
160

Common Calculations

PREN (Pitting Resistance) 28
35
Resilience: Ultimate (Unit Rupture Work), MJ/m3 180
220
Resilience: Unit (Modulus of Resilience), kJ/m3 660
240
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 26
24
Strength to Weight: Bending, points 23
22
Thermal Diffusivity, mm2/s 4.0
3.8
Thermal Shock Resistance, points 20
15

Alloy Composition

Carbon (C), % 0 to 0.035
0 to 0.030
Chromium (Cr), % 21 to 23
16.5 to 18.5
Copper (Cu), % 0.2 to 1.2
0
Iron (Fe), % 66.7 to 75.4
58.7 to 66.9
Manganese (Mn), % 1.0 to 2.5
0 to 2.0
Molybdenum (Mo), % 0.3 to 1.3
4.0 to 5.0
Nickel (Ni), % 2.0 to 4.0
12.5 to 14.5
Nitrogen (N), % 0.15 to 0.25
0.12 to 0.22
Phosphorus (P), % 0 to 0.040
0 to 0.045
Silicon (Si), % 0 to 1.0
0 to 1.0
Sulfur (S), % 0 to 0.010
0 to 0.015