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EN 1.8507 Steel vs. EN 1.7725 Steel

Both EN 1.8507 steel and EN 1.7725 steel are iron alloys. Their average alloy composition is basically identical. There are 31 material properties with values for both materials. Properties with values for just one material (2, in this case) are not shown.

For each property being compared, the top bar is EN 1.8507 steel and the bottom bar is EN 1.7725 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 270
250 to 300
Elastic (Young's, Tensile) Modulus, GPa 190
190
Elongation at Break, % 16
14
Fatigue Strength, MPa 440
390 to 550
Impact Strength: V-Notched Charpy, J 40
34 to 35
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 72
73
Tensile Strength: Ultimate (UTS), MPa 900
830 to 1000
Tensile Strength: Yield (Proof), MPa 670
610 to 860

Thermal Properties

Latent Heat of Fusion, J/g 250
250
Maximum Temperature: Mechanical, °C 430
440
Melting Completion (Liquidus), °C 1450
1460
Melting Onset (Solidus), °C 1410
1420
Specific Heat Capacity, J/kg-K 480
470
Thermal Conductivity, W/m-K 41
39
Thermal Expansion, µm/m-K 13
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.4
7.4
Electrical Conductivity: Equal Weight (Specific), % IACS 8.5
8.6

Otherwise Unclassified Properties

Base Metal Price, % relative 2.5
2.9
Density, g/cm3 7.8
7.8
Embodied Carbon, kg CO2/kg material 1.6
1.8
Embodied Energy, MJ/kg 21
24
Embodied Water, L/kg 63
54

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 130
110 to 130
Resilience: Unit (Modulus of Resilience), kJ/m3 1210
980 to 1940
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 24
24
Strength to Weight: Axial, points 32
29 to 35
Strength to Weight: Bending, points 27
25 to 28
Thermal Diffusivity, mm2/s 11
11
Thermal Shock Resistance, points 26
24 to 29

Alloy Composition

Aluminum (Al), % 0.8 to 1.2
0
Carbon (C), % 0.3 to 0.37
0.27 to 0.34
Chromium (Cr), % 1.0 to 1.3
1.3 to 1.7
Iron (Fe), % 96.1 to 97.7
95.7 to 97.5
Manganese (Mn), % 0.4 to 0.7
0.6 to 1.0
Molybdenum (Mo), % 0.15 to 0.25
0.3 to 0.5
Phosphorus (P), % 0 to 0.025
0 to 0.025
Silicon (Si), % 0 to 0.4
0 to 0.6
Sulfur (S), % 0 to 0.035
0 to 0.030
Vanadium (V), % 0
0.050 to 0.15