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EN 1.3956 Stainless Steel vs. EN 1.7231 Steel

Both EN 1.3956 stainless steel and EN 1.7231 steel are iron alloys. They have 59% of their average alloy composition in common. There are 25 material properties with values for both materials. Properties with values for just one material (8, in this case) are not shown.

For each property being compared, the top bar is EN 1.3956 stainless steel and the bottom bar is EN 1.7231 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
190
Elongation at Break, % 27
11 to 12
Fatigue Strength, MPa 240
360 to 500
Poisson's Ratio 0.28
0.29
Shear Modulus, GPa 79
73
Tensile Strength: Ultimate (UTS), MPa 650
790 to 930
Tensile Strength: Yield (Proof), MPa 330
570 to 800

Thermal Properties

Latent Heat of Fusion, J/g 300
250
Maximum Temperature: Mechanical, °C 1080
420
Melting Completion (Liquidus), °C 1420
1460
Melting Onset (Solidus), °C 1380
1420
Specific Heat Capacity, J/kg-K 480
470
Thermal Expansion, µm/m-K 13
13

Otherwise Unclassified Properties

Base Metal Price, % relative 22
2.5
Density, g/cm3 7.8
7.8
Embodied Carbon, kg CO2/kg material 4.8
1.5
Embodied Energy, MJ/kg 68
20
Embodied Water, L/kg 180
51

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 150
87 to 100
Resilience: Unit (Modulus of Resilience), kJ/m3 270
870 to 1700
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 25
24
Strength to Weight: Axial, points 23
28 to 33
Strength to Weight: Bending, points 21
24 to 27
Thermal Shock Resistance, points 18
23 to 27

Alloy Composition

Carbon (C), % 0 to 0.060
0.38 to 0.45
Chromium (Cr), % 20.5 to 23.5
0.8 to 1.2
Iron (Fe), % 51.9 to 62.1
96.4 to 98.1
Manganese (Mn), % 4.0 to 6.0
0.6 to 1.0
Molybdenum (Mo), % 1.5 to 3.0
0.15 to 0.3
Nickel (Ni), % 11.5 to 13.5
0
Niobium (Nb), % 0.1 to 0.3
0
Nitrogen (N), % 0.2 to 0.4
0
Phosphorus (P), % 0 to 0.040
0 to 0.025
Silicon (Si), % 0 to 1.0
0 to 0.6
Sulfur (S), % 0 to 0.030
0 to 0.030
Vanadium (V), % 0.1 to 0.3
0