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EN 1.4057 Stainless Steel vs. S82121 Stainless Steel

Both EN 1.4057 stainless steel and S82121 stainless steel are iron alloys. They have a moderately high 90% of their average alloy composition in common. There are 32 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 1.4057 stainless steel and the bottom bar is S82121 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 320 to 430
370
Poisson's Ratio 0.28
0.27
Shear Modulus, GPa 77
78
Shear Strength, MPa 520 to 580
470
Tensile Strength: Ultimate (UTS), MPa 840 to 980
730
Tensile Strength: Yield (Proof), MPa 530 to 790
510

Thermal Properties

Latent Heat of Fusion, J/g 280
290
Maximum Temperature: Corrosion, °C 400
430
Maximum Temperature: Mechanical, °C 850
1020
Melting Completion (Liquidus), °C 1440
1430
Melting Onset (Solidus), °C 1390
1380
Specific Heat Capacity, J/kg-K 480
480
Thermal Conductivity, W/m-K 25
15
Thermal Expansion, µm/m-K 10
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.5
2.2
Electrical Conductivity: Equal Weight (Specific), % IACS 2.9
2.5

Otherwise Unclassified Properties

Base Metal Price, % relative 9.5
14
Density, g/cm3 7.7
7.7
Embodied Carbon, kg CO2/kg material 2.2
2.8
Embodied Energy, MJ/kg 32
40
Embodied Water, L/kg 120
150

Common Calculations

PREN (Pitting Resistance) 16
28
Resilience: Ultimate (Unit Rupture Work), MJ/m3 96 to 130
180
Resilience: Unit (Modulus of Resilience), kJ/m3 700 to 1610
660
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 30 to 35
26
Strength to Weight: Bending, points 26 to 28
23
Thermal Diffusivity, mm2/s 6.7
4.0
Thermal Shock Resistance, points 30 to 35
20

Alloy Composition

Carbon (C), % 0.12 to 0.22
0 to 0.035
Chromium (Cr), % 15 to 17
21 to 23
Copper (Cu), % 0
0.2 to 1.2
Iron (Fe), % 77.7 to 83.4
66.7 to 75.4
Manganese (Mn), % 0 to 1.5
1.0 to 2.5
Molybdenum (Mo), % 0
0.3 to 1.3
Nickel (Ni), % 1.5 to 2.5
2.0 to 4.0
Nitrogen (N), % 0
0.15 to 0.25
Phosphorus (P), % 0 to 0.040
0 to 0.040
Silicon (Si), % 0 to 1.0
0 to 1.0
Sulfur (S), % 0 to 0.015
0 to 0.010