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EN 1.6956 Steel vs. EN 1.8872 Steel

Both EN 1.6956 steel and EN 1.8872 steel are iron alloys. Both are furnished in the quenched and tempered condition. They have a very high 95% 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 1.6956 steel and the bottom bar is EN 1.8872 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 370
180
Elastic (Young's, Tensile) Modulus, GPa 190
190
Elongation at Break, % 9.6
21
Fatigue Strength, MPa 680
310
Impact Strength: V-Notched Charpy, J 25
90
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 73
73
Shear Strength, MPa 730
380
Tensile Strength: Ultimate (UTS), MPa 1230
610
Tensile Strength: Yield (Proof), MPa 1120
450

Thermal Properties

Latent Heat of Fusion, J/g 250
250
Maximum Temperature: Mechanical, °C 440
410
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 46
39
Thermal Expansion, µm/m-K 13
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 8.0
7.5
Electrical Conductivity: Equal Weight (Specific), % IACS 9.1
8.6

Otherwise Unclassified Properties

Base Metal Price, % relative 5.0
2.8
Density, g/cm3 7.9
7.9
Embodied Carbon, kg CO2/kg material 2.2
1.7
Embodied Energy, MJ/kg 31
22
Embodied Water, L/kg 60
50

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 110
120
Resilience: Unit (Modulus of Resilience), kJ/m3 3320
530
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 24
24
Strength to Weight: Axial, points 43
22
Strength to Weight: Bending, points 32
20
Thermal Diffusivity, mm2/s 12
10
Thermal Shock Resistance, points 36
18

Alloy Composition

Boron (B), % 0
0 to 0.0050
Carbon (C), % 0.28 to 0.38
0 to 0.18
Chromium (Cr), % 1.0 to 1.7
0 to 0.5
Copper (Cu), % 0
0 to 0.3
Iron (Fe), % 92.4 to 95.3
95.1 to 100
Manganese (Mn), % 0.15 to 0.4
0 to 1.7
Molybdenum (Mo), % 0.3 to 0.6
0 to 0.5
Nickel (Ni), % 2.9 to 3.8
0 to 1.0
Niobium (Nb), % 0
0 to 0.050
Nitrogen (N), % 0
0 to 0.015
Phosphorus (P), % 0 to 0.035
0 to 0.020
Silicon (Si), % 0 to 0.4
0 to 0.5
Sulfur (S), % 0 to 0.035
0 to 0.0080
Titanium (Ti), % 0
0 to 0.030
Vanadium (V), % 0.080 to 0.25
0 to 0.080
Zirconium (Zr), % 0
0 to 0.050