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EN 1.4945 Stainless Steel vs. EN 1.7201 Steel

Both EN 1.4945 stainless steel and EN 1.7201 steel are iron alloys. They have 64% 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 1.4945 stainless steel and the bottom bar is EN 1.7201 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 200 to 220
130 to 160
Elastic (Young's, Tensile) Modulus, GPa 200
190
Poisson's Ratio 0.28
0.29
Shear Modulus, GPa 77
73
Tensile Strength: Ultimate (UTS), MPa 640 to 740
430 to 1300

Thermal Properties

Latent Heat of Fusion, J/g 290
250
Maximum Temperature: Mechanical, °C 920
420
Melting Completion (Liquidus), °C 1490
1460
Melting Onset (Solidus), °C 1440
1420
Specific Heat Capacity, J/kg-K 470
470
Thermal Conductivity, W/m-K 14
45
Thermal Expansion, µm/m-K 17
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.9
7.3
Electrical Conductivity: Equal Weight (Specific), % IACS 3.2
8.3

Otherwise Unclassified Properties

Base Metal Price, % relative 30
2.5
Density, g/cm3 8.1
7.8
Embodied Carbon, kg CO2/kg material 5.0
1.5
Embodied Energy, MJ/kg 73
20
Embodied Water, L/kg 150
51

Common Calculations

Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 24
24
Strength to Weight: Axial, points 22 to 25
15 to 46
Strength to Weight: Bending, points 20 to 22
16 to 34
Thermal Diffusivity, mm2/s 3.7
12
Thermal Shock Resistance, points 14 to 16
13 to 38

Alloy Composition

Carbon (C), % 0.040 to 0.1
0.1 to 0.15
Chromium (Cr), % 15.5 to 17.5
0.9 to 1.2
Copper (Cu), % 0
0 to 0.25
Iron (Fe), % 57.9 to 65.7
96.9 to 98.3
Manganese (Mn), % 0 to 1.5
0.6 to 0.9
Molybdenum (Mo), % 0
0.15 to 0.25
Nickel (Ni), % 15.5 to 17.5
0
Niobium (Nb), % 0.4 to 1.2
0
Nitrogen (N), % 0.060 to 0.14
0
Phosphorus (P), % 0 to 0.035
0 to 0.025
Silicon (Si), % 0.3 to 0.6
0 to 0.3
Sulfur (S), % 0 to 0.015
0 to 0.025
Tungsten (W), % 2.5 to 3.5
0