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EN 1.4821 Stainless Steel vs. EN 1.6957 Steel

Both EN 1.4821 stainless steel and EN 1.6957 steel are iron alloys. They have 73% 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 1.4821 stainless steel and the bottom bar is EN 1.6957 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 200
280
Elastic (Young's, Tensile) Modulus, GPa 200
190
Elongation at Break, % 18
18
Fatigue Strength, MPa 280
530
Poisson's Ratio 0.27
0.29
Shear Modulus, GPa 79
73
Shear Strength, MPa 450
570
Tensile Strength: Ultimate (UTS), MPa 730
930
Tensile Strength: Yield (Proof), MPa 450
780

Thermal Properties

Latent Heat of Fusion, J/g 310
250
Maximum Temperature: Mechanical, °C 1100
450
Melting Completion (Liquidus), °C 1410
1460
Melting Onset (Solidus), °C 1370
1420
Specific Heat Capacity, J/kg-K 490
470
Thermal Conductivity, W/m-K 17
47
Thermal Expansion, µm/m-K 12
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 1.9
7.9
Electrical Conductivity: Equal Weight (Specific), % IACS 2.3
9.1

Otherwise Unclassified Properties

Base Metal Price, % relative 15
5.0
Density, g/cm3 7.6
7.9
Embodied Carbon, kg CO2/kg material 2.9
2.1
Embodied Energy, MJ/kg 41
29
Embodied Water, L/kg 160
60

Common Calculations

PREN (Pitting Resistance) 26
2.7
Resilience: Ultimate (Unit Rupture Work), MJ/m3 110
160
Resilience: Unit (Modulus of Resilience), kJ/m3 500
1630
Stiffness to Weight: Axial, points 15
13
Stiffness to Weight: Bending, points 26
24
Strength to Weight: Axial, points 26
33
Strength to Weight: Bending, points 23
27
Thermal Diffusivity, mm2/s 4.6
13
Thermal Shock Resistance, points 21
27

Alloy Composition

Carbon (C), % 0.1 to 0.2
0.22 to 0.32
Chromium (Cr), % 24.5 to 26.5
1.2 to 1.8
Iron (Fe), % 64.2 to 71.1
92.7 to 94.7
Manganese (Mn), % 0 to 2.0
0.15 to 0.4
Molybdenum (Mo), % 0
0.25 to 0.45
Nickel (Ni), % 3.5 to 5.5
3.4 to 4.0
Nitrogen (N), % 0 to 0.1
0
Phosphorus (P), % 0 to 0.040
0 to 0.010
Silicon (Si), % 0.8 to 1.5
0 to 0.15
Sulfur (S), % 0 to 0.015
0 to 0.0070
Vanadium (V), % 0
0.050 to 0.15