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EN 1.8871 Steel vs. EN 1.7725 Steel

Both EN 1.8871 steel and EN 1.7725 steel are iron alloys. They have a very high 98% of their average alloy composition in common. 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 1.8871 steel and the bottom bar is EN 1.7725 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 180
250 to 300
Elastic (Young's, Tensile) Modulus, GPa 190
190
Elongation at Break, % 22
14
Fatigue Strength, MPa 320
390 to 550
Impact Strength: V-Notched Charpy, J 68
34 to 35
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 73
73
Tensile Strength: Ultimate (UTS), MPa 610
830 to 1000
Tensile Strength: Yield (Proof), MPa 460
610 to 860

Thermal Properties

Latent Heat of Fusion, J/g 250
250
Maximum Temperature: Mechanical, °C 410
440
Melting Completion (Liquidus), °C 1460
1460
Melting Onset (Solidus), °C 1420
1420
Specific Heat Capacity, J/kg-K 470
470
Thermal Conductivity, W/m-K 39
39
Thermal Expansion, µm/m-K 13
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.5
7.4
Electrical Conductivity: Equal Weight (Specific), % IACS 8.6
8.6

Otherwise Unclassified Properties

Base Metal Price, % relative 2.8
2.9
Density, g/cm3 7.9
7.8
Embodied Carbon, kg CO2/kg material 1.7
1.8
Embodied Energy, MJ/kg 22
24
Embodied Water, L/kg 50
54

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 120
110 to 130
Resilience: Unit (Modulus of Resilience), kJ/m3 550
980 to 1940
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 24
24
Strength to Weight: Axial, points 22
29 to 35
Strength to Weight: Bending, points 20
25 to 28
Thermal Diffusivity, mm2/s 10
11
Thermal Shock Resistance, points 18
24 to 29

Alloy Composition

Boron (B), % 0 to 0.0050
0
Carbon (C), % 0 to 0.18
0.27 to 0.34
Chromium (Cr), % 0 to 0.5
1.3 to 1.7
Copper (Cu), % 0 to 0.3
0
Iron (Fe), % 95.1 to 100
95.7 to 97.5
Manganese (Mn), % 0 to 1.7
0.6 to 1.0
Molybdenum (Mo), % 0 to 0.5
0.3 to 0.5
Nickel (Ni), % 0 to 1.0
0
Niobium (Nb), % 0 to 0.050
0
Nitrogen (N), % 0 to 0.015
0
Phosphorus (P), % 0 to 0.025
0 to 0.025
Silicon (Si), % 0 to 0.5
0 to 0.6
Sulfur (S), % 0 to 0.010
0 to 0.030
Titanium (Ti), % 0 to 0.030
0
Vanadium (V), % 0 to 0.080
0.050 to 0.15
Zirconium (Zr), % 0 to 0.050
0