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EN 1.6956 Steel vs. SAE-AISI 8115 Steel

Both EN 1.6956 steel and SAE-AISI 8115 steel are iron alloys. They have a very high 95% 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 1.6956 steel and the bottom bar is SAE-AISI 8115 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 370
180
Elastic (Young's, Tensile) Modulus, GPa 190
190
Elongation at Break, % 9.6
15
Fatigue Strength, MPa 680
320
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 73
73
Shear Strength, MPa 730
370
Tensile Strength: Ultimate (UTS), MPa 1230
610
Tensile Strength: Yield (Proof), MPa 1120
500

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
43
Thermal Expansion, µm/m-K 13
12

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 8.0
7.2
Electrical Conductivity: Equal Weight (Specific), % IACS 9.1
8.2

Otherwise Unclassified Properties

Base Metal Price, % relative 5.0
2.3
Density, g/cm3 7.9
7.8
Embodied Carbon, kg CO2/kg material 2.2
1.5
Embodied Energy, MJ/kg 31
19
Embodied Water, L/kg 60
49

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 110
86
Resilience: Unit (Modulus of Resilience), kJ/m3 3320
660
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 24
24
Strength to Weight: Axial, points 43
21
Strength to Weight: Bending, points 32
20
Thermal Diffusivity, mm2/s 12
12
Thermal Shock Resistance, points 36
19

Alloy Composition

Carbon (C), % 0.28 to 0.38
0.13 to 0.18
Chromium (Cr), % 1.0 to 1.7
0.3 to 0.5
Iron (Fe), % 92.4 to 95.3
97.4 to 98.4
Manganese (Mn), % 0.15 to 0.4
0.7 to 0.9
Molybdenum (Mo), % 0.3 to 0.6
0.080 to 0.15
Nickel (Ni), % 2.9 to 3.8
0.2 to 0.4
Phosphorus (P), % 0 to 0.035
0 to 0.035
Silicon (Si), % 0 to 0.4
0.15 to 0.35
Sulfur (S), % 0 to 0.035
0 to 0.040
Vanadium (V), % 0.080 to 0.25
0