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EN 1.8915 Steel vs. EN 1.6958 Steel

Both EN 1.8915 steel and EN 1.6958 steel are iron alloys. They have a moderately 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 (2, in this case) are not shown.

For each property being compared, the top bar is EN 1.8915 steel and the bottom bar is EN 1.6958 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 190
340
Elastic (Young's, Tensile) Modulus, GPa 190
190
Elongation at Break, % 19
16
Fatigue Strength, MPa 340
700
Impact Strength: V-Notched Charpy, J 79
63
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 73
73
Shear Strength, MPa 400
700
Tensile Strength: Ultimate (UTS), MPa 640
1140
Tensile Strength: Yield (Proof), MPa 490
1070

Thermal Properties

Latent Heat of Fusion, J/g 250
250
Maximum Temperature: Mechanical, °C 400
450
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
47
Thermal Expansion, µm/m-K 13
11

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.5
7.9
Electrical Conductivity: Equal Weight (Specific), % IACS 8.6
9.1

Otherwise Unclassified Properties

Base Metal Price, % relative 2.5
5.0
Density, g/cm3 7.8
7.9
Embodied Carbon, kg CO2/kg material 1.7
2.0
Embodied Energy, MJ/kg 24
27
Embodied Water, L/kg 51
60

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 110
180
Resilience: Unit (Modulus of Resilience), kJ/m3 640
3050
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 24
24
Strength to Weight: Axial, points 23
40
Strength to Weight: Bending, points 21
31
Thermal Diffusivity, mm2/s 12
13
Thermal Shock Resistance, points 19
39

Alloy Composition

Aluminum (Al), % 0.020 to 0.050
0.0050 to 0.050
Carbon (C), % 0 to 0.2
0.25 to 0.3
Chromium (Cr), % 0 to 0.3
1.2 to 1.7
Copper (Cu), % 0 to 0.7
0
Iron (Fe), % 95.2 to 98.9
92.6 to 94.5
Manganese (Mn), % 1.1 to 1.7
0.2 to 0.5
Molybdenum (Mo), % 0 to 0.1
0.35 to 0.55
Nickel (Ni), % 0 to 0.8
3.3 to 3.8
Niobium (Nb), % 0 to 0.050
0
Nitrogen (N), % 0 to 0.025
0
Phosphorus (P), % 0 to 0.025
0 to 0.020
Silicon (Si), % 0 to 0.6
0.15 to 0.3
Sulfur (S), % 0 to 0.0080
0 to 0.015
Titanium (Ti), % 0 to 0.030
0
Vanadium (V), % 0 to 0.2
0 to 0.12