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EN 1.7201 Steel vs. EN 1.7715 Steel

Both EN 1.7201 steel and EN 1.7715 steel are iron alloys. Their average alloy composition is basically identical. 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 1.7201 steel and the bottom bar is EN 1.7715 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 130 to 160
160
Elastic (Young's, Tensile) Modulus, GPa 190
190
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 73
73
Tensile Strength: Ultimate (UTS), MPa 430 to 1300
540

Thermal Properties

Latent Heat of Fusion, J/g 250
250
Maximum Temperature: Mechanical, °C 420
420
Melting Completion (Liquidus), °C 1460
1470
Melting Onset (Solidus), °C 1420
1430
Specific Heat Capacity, J/kg-K 470
470
Thermal Conductivity, W/m-K 45
40
Thermal Expansion, µm/m-K 13
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.3
7.3
Electrical Conductivity: Equal Weight (Specific), % IACS 8.3
8.4

Otherwise Unclassified Properties

Base Metal Price, % relative 2.5
2.9
Density, g/cm3 7.8
7.9
Embodied Carbon, kg CO2/kg material 1.5
2.2
Embodied Energy, MJ/kg 20
30
Embodied Water, L/kg 51
52

Common Calculations

Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 24
24
Strength to Weight: Axial, points 15 to 46
19
Strength to Weight: Bending, points 16 to 34
19
Thermal Diffusivity, mm2/s 12
11
Thermal Shock Resistance, points 13 to 38
16

Alloy Composition

Aluminum (Al), % 0
0 to 0.040
Carbon (C), % 0.1 to 0.15
0.1 to 0.15
Chromium (Cr), % 0.9 to 1.2
0.3 to 0.6
Copper (Cu), % 0 to 0.25
0 to 0.3
Iron (Fe), % 96.9 to 98.3
96.5 to 98.3
Manganese (Mn), % 0.6 to 0.9
0.4 to 0.7
Molybdenum (Mo), % 0.15 to 0.25
0.5 to 0.7
Nickel (Ni), % 0
0 to 0.3
Phosphorus (P), % 0 to 0.025
0 to 0.025
Silicon (Si), % 0 to 0.3
0.15 to 0.35
Sulfur (S), % 0 to 0.025
0 to 0.010
Vanadium (V), % 0
0.22 to 0.28