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EN 1.0031 Steel vs. EN 1.7729 Steel

Both EN 1.0031 steel and EN 1.7729 steel are iron alloys. They have a very high 96% 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 1.7729 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 89
270
Elastic (Young's, Tensile) Modulus, GPa 190
190
Elongation at Break, % 28
17
Fatigue Strength, MPa 160
500
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 73
73
Shear Strength, MPa 200
560
Tensile Strength: Ultimate (UTS), MPa 310
910
Tensile Strength: Yield (Proof), MPa 210
750

Thermal Properties

Latent Heat of Fusion, J/g 250
250
Maximum Temperature: Mechanical, °C 400
430
Melting Completion (Liquidus), °C 1470
1470
Melting Onset (Solidus), °C 1420
1430
Specific Heat Capacity, J/kg-K 470
470
Thermal Conductivity, W/m-K 53
40
Thermal Expansion, µm/m-K 12
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.0
7.6
Electrical Conductivity: Equal Weight (Specific), % IACS 8.0
8.7

Otherwise Unclassified Properties

Base Metal Price, % relative 1.8
3.8
Density, g/cm3 7.9
7.8
Embodied Carbon, kg CO2/kg material 1.4
3.3
Embodied Energy, MJ/kg 18
49
Embodied Water, L/kg 45
59

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 78
150
Resilience: Unit (Modulus of Resilience), kJ/m3 120
1500
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 24
24
Strength to Weight: Axial, points 11
32
Strength to Weight: Bending, points 13
27
Thermal Diffusivity, mm2/s 14
11
Thermal Shock Resistance, points 9.8
27

Alloy Composition

Aluminum (Al), % 0
0.015 to 0.080
Arsenic (As), % 0
0 to 0.020
Boron (B), % 0
0.0010 to 0.010
Carbon (C), % 0 to 0.1
0.17 to 0.23
Chromium (Cr), % 0
0.9 to 1.2
Copper (Cu), % 0
0 to 0.2
Iron (Fe), % 98.8 to 100
94.8 to 97
Manganese (Mn), % 0 to 0.7
0.35 to 0.75
Molybdenum (Mo), % 0
0.9 to 1.1
Nickel (Ni), % 0
0 to 0.2
Phosphorus (P), % 0 to 0.045
0 to 0.020
Silicon (Si), % 0 to 0.35
0 to 0.4
Sulfur (S), % 0 to 0.045
0 to 0.015
Tin (Sn), % 0
0 to 0.020
Titanium (Ti), % 0
0.070 to 0.15
Vanadium (V), % 0
0.6 to 0.8