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EN 1.7231 Steel vs. AISI 201 Stainless Steel

Both EN 1.7231 steel and AISI 201 stainless steel are iron alloys. They have 73% of their average alloy composition in common. There are 30 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 1.7231 steel and the bottom bar is AISI 201 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 240 to 280
200 to 440
Elastic (Young's, Tensile) Modulus, GPa 190
200
Elongation at Break, % 11 to 12
4.6 to 51
Fatigue Strength, MPa 360 to 500
280 to 600
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 73
77
Tensile Strength: Ultimate (UTS), MPa 790 to 930
650 to 1450
Tensile Strength: Yield (Proof), MPa 570 to 800
300 to 1080

Thermal Properties

Latent Heat of Fusion, J/g 250
280
Maximum Temperature: Mechanical, °C 420
880
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 46
15
Thermal Expansion, µm/m-K 13
17

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.3
2.5
Electrical Conductivity: Equal Weight (Specific), % IACS 8.4
2.9

Otherwise Unclassified Properties

Base Metal Price, % relative 2.5
12
Density, g/cm3 7.8
7.7
Embodied Carbon, kg CO2/kg material 1.5
2.6
Embodied Energy, MJ/kg 20
38
Embodied Water, L/kg 51
140

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 87 to 100
61 to 340
Resilience: Unit (Modulus of Resilience), kJ/m3 870 to 1700
230 to 2970
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 24
25
Strength to Weight: Axial, points 28 to 33
23 to 52
Strength to Weight: Bending, points 24 to 27
22 to 37
Thermal Diffusivity, mm2/s 12
4.0
Thermal Shock Resistance, points 23 to 27
14 to 32

Alloy Composition

Carbon (C), % 0.38 to 0.45
0 to 0.15
Chromium (Cr), % 0.8 to 1.2
16 to 18
Iron (Fe), % 96.4 to 98.1
67.5 to 75
Manganese (Mn), % 0.6 to 1.0
5.5 to 7.5
Molybdenum (Mo), % 0.15 to 0.3
0
Nickel (Ni), % 0
3.5 to 5.5
Nitrogen (N), % 0
0 to 0.25
Phosphorus (P), % 0 to 0.025
0 to 0.060
Silicon (Si), % 0 to 0.6
0 to 1.0
Sulfur (S), % 0 to 0.030
0 to 0.030

Comparable Variants