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EN 1.8527 Steel vs. EN 1.4931 Steel

Both EN 1.8527 steel and EN 1.4931 steel are iron alloys. Both are furnished in the quenched and tempered condition. They have a moderately high 90% of their average alloy composition in common. There are 32 material properties with values for both materials. Properties with values for just one material (1, in this case) are not shown.

For each property being compared, the top bar is EN 1.8527 steel and the bottom bar is EN 1.4931 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 270
240
Elastic (Young's, Tensile) Modulus, GPa 190
200
Elongation at Break, % 16
17
Fatigue Strength, MPa 520
410
Impact Strength: V-Notched Charpy, J 39
30
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 74
76
Tensile Strength: Ultimate (UTS), MPa 900
810
Tensile Strength: Yield (Proof), MPa 800
620

Thermal Properties

Latent Heat of Fusion, J/g 260
270
Maximum Temperature: Mechanical, °C 490
600
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 41
24
Thermal Expansion, µm/m-K 13
14

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.8
9.8
Electrical Conductivity: Equal Weight (Specific), % IACS 9.0
11

Otherwise Unclassified Properties

Base Metal Price, % relative 4.0
8.5
Density, g/cm3 7.8
7.8
Embodied Carbon, kg CO2/kg material 1.7
2.9
Embodied Energy, MJ/kg 23
42
Embodied Water, L/kg 66
100

Common Calculations

PREN (Pitting Resistance) 5.7
16
Resilience: Ultimate (Unit Rupture Work), MJ/m3 140
130
Resilience: Unit (Modulus of Resilience), kJ/m3 1670
970
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 24
25
Strength to Weight: Axial, points 32
29
Strength to Weight: Bending, points 26
25
Thermal Diffusivity, mm2/s 11
6.5
Thermal Shock Resistance, points 26
22

Alloy Composition

Carbon (C), % 0.040 to 0.12
0.2 to 0.26
Chromium (Cr), % 3.7 to 4.3
11.3 to 12.2
Copper (Cu), % 0 to 0.25
0
Iron (Fe), % 93.2 to 95.1
83.2 to 86.8
Manganese (Mn), % 0.85 to 1.2
0.5 to 0.8
Molybdenum (Mo), % 0.4 to 0.6
1.0 to 1.2
Nickel (Ni), % 0
0 to 1.0
Phosphorus (P), % 0 to 0.025
0 to 0.030
Silicon (Si), % 0 to 0.4
0 to 0.4
Sulfur (S), % 0 to 0.035
0 to 0.020
Tungsten (W), % 0
0 to 0.5
Vanadium (V), % 0
0.25 to 0.35