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R30556 Alloy vs. EN 1.8818 Steel

Both R30556 alloy and EN 1.8818 steel are iron alloys. They have a modest 31% of their average alloy composition in common, which, by itself, doesn't mean much. There are 30 material properties with values for both materials. Properties with values for just one material (4, in this case) are not shown.

For each property being compared, the top bar is R30556 alloy and the bottom bar is EN 1.8818 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 210
190
Elongation at Break, % 45
27
Fatigue Strength, MPa 320
200
Poisson's Ratio 0.28
0.29
Shear Modulus, GPa 81
73
Shear Strength, MPa 550
280
Tensile Strength: Ultimate (UTS), MPa 780
440
Tensile Strength: Yield (Proof), MPa 350
270

Thermal Properties

Latent Heat of Fusion, J/g 300
250
Maximum Temperature: Mechanical, °C 1100
400
Melting Completion (Liquidus), °C 1420
1460
Melting Onset (Solidus), °C 1330
1420
Specific Heat Capacity, J/kg-K 450
470
Thermal Conductivity, W/m-K 11
48
Thermal Expansion, µm/m-K 15
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 1.8
7.4
Electrical Conductivity: Equal Weight (Specific), % IACS 1.9
8.5

Otherwise Unclassified Properties

Base Metal Price, % relative 70
2.4
Density, g/cm3 8.4
7.8
Embodied Carbon, kg CO2/kg material 8.7
1.6
Embodied Energy, MJ/kg 130
21
Embodied Water, L/kg 300
49

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 290
110
Resilience: Unit (Modulus of Resilience), kJ/m3 290
200
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 23
24
Strength to Weight: Axial, points 26
16
Strength to Weight: Bending, points 22
16
Thermal Diffusivity, mm2/s 2.9
13
Thermal Shock Resistance, points 18
13

Alloy Composition

Aluminum (Al), % 0.1 to 0.5
0.015 to 0.034
Boron (B), % 0 to 0.020
0
Carbon (C), % 0.050 to 0.15
0 to 0.15
Chromium (Cr), % 21 to 23
0 to 0.35
Cobalt (Co), % 16 to 21
0
Copper (Cu), % 0
0 to 0.6
Iron (Fe), % 20.4 to 38.2
95.9 to 99.985
Lanthanum (La), % 0.0050 to 0.1
0
Manganese (Mn), % 0.5 to 2.0
0 to 1.6
Molybdenum (Mo), % 2.5 to 4.0
0 to 0.13
Nickel (Ni), % 19 to 22.5
0 to 0.35
Niobium (Nb), % 0 to 0.3
0 to 0.060
Nitrogen (N), % 0.1 to 0.3
0 to 0.017
Phosphorus (P), % 0 to 0.040
0 to 0.035
Silicon (Si), % 0.2 to 0.8
0 to 0.55
Sulfur (S), % 0 to 0.015
0 to 0.030
Tantalum (Ta), % 0.3 to 1.3
0
Titanium (Ti), % 0
0 to 0.060
Tungsten (W), % 2.0 to 3.5
0
Vanadium (V), % 0
0 to 0.1
Zinc (Zn), % 0.0010 to 0.1
0