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EN 1.0031 Steel vs. EN 1.6958 Steel

Both EN 1.0031 steel and EN 1.6958 steel are iron alloys. They have a moderately high 94% of their average alloy composition in common. There are 31 material properties with values for both materials. Properties with values for just one material (3, in this case) are not shown.

For each property being compared, the top bar is EN 1.0031 steel and the bottom bar is EN 1.6958 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 89
340
Elastic (Young's, Tensile) Modulus, GPa 190
190
Elongation at Break, % 28
16
Fatigue Strength, MPa 160
700
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 73
73
Shear Strength, MPa 200
700
Tensile Strength: Ultimate (UTS), MPa 310
1140
Tensile Strength: Yield (Proof), MPa 210
1070

Thermal Properties

Latent Heat of Fusion, J/g 250
250
Maximum Temperature: Mechanical, °C 400
450
Melting Completion (Liquidus), °C 1470
1460
Melting Onset (Solidus), °C 1420
1420
Specific Heat Capacity, J/kg-K 470
470
Thermal Conductivity, W/m-K 53
47
Thermal Expansion, µm/m-K 12
11

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.0
7.9
Electrical Conductivity: Equal Weight (Specific), % IACS 8.0
9.1

Otherwise Unclassified Properties

Base Metal Price, % relative 1.8
5.0
Density, g/cm3 7.9
7.9
Embodied Carbon, kg CO2/kg material 1.4
2.0
Embodied Energy, MJ/kg 18
27
Embodied Water, L/kg 45
60

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 78
180
Resilience: Unit (Modulus of Resilience), kJ/m3 120
3050
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 24
24
Strength to Weight: Axial, points 11
40
Strength to Weight: Bending, points 13
31
Thermal Diffusivity, mm2/s 14
13
Thermal Shock Resistance, points 9.8
39

Alloy Composition

Aluminum (Al), % 0
0.0050 to 0.050
Carbon (C), % 0 to 0.1
0.25 to 0.3
Chromium (Cr), % 0
1.2 to 1.7
Iron (Fe), % 98.8 to 100
92.6 to 94.5
Manganese (Mn), % 0 to 0.7
0.2 to 0.5
Molybdenum (Mo), % 0
0.35 to 0.55
Nickel (Ni), % 0
3.3 to 3.8
Phosphorus (P), % 0 to 0.045
0 to 0.020
Silicon (Si), % 0 to 0.35
0.15 to 0.3
Sulfur (S), % 0 to 0.045
0 to 0.015
Vanadium (V), % 0
0 to 0.12