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R30556 Alloy vs. EN 1.7379 Steel

Both R30556 alloy and EN 1.7379 steel are iron alloys. They have a modest 34% 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 1.7379 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 210
190
Elongation at Break, % 45
21
Fatigue Strength, MPa 320
320
Poisson's Ratio 0.28
0.29
Shear Modulus, GPa 81
74
Tensile Strength: Ultimate (UTS), MPa 780
670
Tensile Strength: Yield (Proof), MPa 350
460

Thermal Properties

Latent Heat of Fusion, J/g 300
260
Maximum Temperature: Mechanical, °C 1100
460
Melting Completion (Liquidus), °C 1420
1470
Melting Onset (Solidus), °C 1330
1420
Specific Heat Capacity, J/kg-K 450
470
Thermal Conductivity, W/m-K 11
39
Thermal Expansion, µm/m-K 15
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 1.8
7.6
Electrical Conductivity: Equal Weight (Specific), % IACS 1.9
8.8

Otherwise Unclassified Properties

Base Metal Price, % relative 70
3.8
Density, g/cm3 8.4
7.8
Embodied Carbon, kg CO2/kg material 8.7
1.8
Embodied Energy, MJ/kg 130
23
Embodied Water, L/kg 300
59

Common Calculations

PREN (Pitting Resistance) 40
5.7
Resilience: Ultimate (Unit Rupture Work), MJ/m3 290
120
Resilience: Unit (Modulus of Resilience), kJ/m3 290
550
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 23
24
Strength to Weight: Axial, points 26
24
Strength to Weight: Bending, points 22
22
Thermal Diffusivity, mm2/s 2.9
11
Thermal Shock Resistance, points 18
19

Alloy Composition

Aluminum (Al), % 0.1 to 0.5
0
Boron (B), % 0 to 0.020
0
Carbon (C), % 0.050 to 0.15
0.13 to 0.2
Chromium (Cr), % 21 to 23
2.0 to 2.5
Cobalt (Co), % 16 to 21
0
Iron (Fe), % 20.4 to 38.2
94.5 to 96.5
Lanthanum (La), % 0.0050 to 0.1
0
Manganese (Mn), % 0.5 to 2.0
0.5 to 0.9
Molybdenum (Mo), % 2.5 to 4.0
0.9 to 1.2
Nickel (Ni), % 19 to 22.5
0
Niobium (Nb), % 0 to 0.3
0
Nitrogen (N), % 0.1 to 0.3
0
Phosphorus (P), % 0 to 0.040
0 to 0.025
Silicon (Si), % 0.2 to 0.8
0 to 0.6
Sulfur (S), % 0 to 0.015
0 to 0.030
Tantalum (Ta), % 0.3 to 1.3
0
Tungsten (W), % 2.0 to 3.5
0
Zinc (Zn), % 0.0010 to 0.1
0