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EN 1.6957 Steel vs. S20432 Stainless Steel

Both EN 1.6957 steel and S20432 stainless steel are iron alloys. They have 76% of their average alloy composition in common. There are 32 material properties with values for both materials. Properties with values for just one material (4, in this case) are not shown.

For each property being compared, the top bar is EN 1.6957 steel and the bottom bar is S20432 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 280
170
Elastic (Young's, Tensile) Modulus, GPa 190
200
Elongation at Break, % 18
45
Fatigue Strength, MPa 530
210
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 73
76
Shear Strength, MPa 570
400
Tensile Strength: Ultimate (UTS), MPa 930
580
Tensile Strength: Yield (Proof), MPa 780
230

Thermal Properties

Latent Heat of Fusion, J/g 250
280
Maximum Temperature: Mechanical, °C 450
900
Melting Completion (Liquidus), °C 1460
1410
Melting Onset (Solidus), °C 1420
1370
Specific Heat Capacity, J/kg-K 470
480
Thermal Conductivity, W/m-K 47
15
Thermal Expansion, µm/m-K 13
17

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.9
2.4
Electrical Conductivity: Equal Weight (Specific), % IACS 9.1
2.8

Otherwise Unclassified Properties

Base Metal Price, % relative 5.0
13
Density, g/cm3 7.9
7.8
Embodied Carbon, kg CO2/kg material 2.1
2.7
Embodied Energy, MJ/kg 29
38
Embodied Water, L/kg 60
140

Common Calculations

PREN (Pitting Resistance) 2.7
20
Resilience: Ultimate (Unit Rupture Work), MJ/m3 160
210
Resilience: Unit (Modulus of Resilience), kJ/m3 1630
140
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 24
25
Strength to Weight: Axial, points 33
21
Strength to Weight: Bending, points 27
20
Thermal Diffusivity, mm2/s 13
4.0
Thermal Shock Resistance, points 27
13

Alloy Composition

Carbon (C), % 0.22 to 0.32
0 to 0.080
Chromium (Cr), % 1.2 to 1.8
17 to 18
Copper (Cu), % 0
2.0 to 3.0
Iron (Fe), % 92.7 to 94.7
66.7 to 74
Manganese (Mn), % 0.15 to 0.4
3.0 to 5.0
Molybdenum (Mo), % 0.25 to 0.45
0
Nickel (Ni), % 3.4 to 4.0
4.0 to 6.0
Nitrogen (N), % 0
0.050 to 0.2
Phosphorus (P), % 0 to 0.010
0 to 0.045
Silicon (Si), % 0 to 0.15
0 to 1.0
Sulfur (S), % 0 to 0.0070
0 to 0.030
Vanadium (V), % 0.050 to 0.15
0