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R30556 Alloy vs. EN 1.4740 Stainless Steel

Both R30556 alloy and EN 1.4740 stainless steel are iron alloys. Both are furnished in the annealed condition. They have 49% of their average alloy composition in common. There are 23 material properties with values for both materials. Properties with values for just one material (10, in this case) are not shown.

For each property being compared, the top bar is R30556 alloy and the bottom bar is EN 1.4740 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 210
200
Elongation at Break, % 45
22
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 81
77

Thermal Properties

Latent Heat of Fusion, J/g 300
300
Maximum Temperature: Corrosion, °C 450
410
Maximum Temperature: Mechanical, °C 1100
900
Melting Completion (Liquidus), °C 1420
1420
Melting Onset (Solidus), °C 1330
1370
Specific Heat Capacity, J/kg-K 450
490
Thermal Conductivity, W/m-K 11
18
Thermal Expansion, µm/m-K 15
10

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 1.8
2.2
Electrical Conductivity: Equal Weight (Specific), % IACS 1.9
2.6

Otherwise Unclassified Properties

Base Metal Price, % relative 70
9.5
Density, g/cm3 8.4
7.6
Embodied Carbon, kg CO2/kg material 8.7
2.3
Embodied Energy, MJ/kg 130
32
Embodied Water, L/kg 300
120

Common Calculations

PREN (Pitting Resistance) 40
18
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 23
25
Thermal Diffusivity, mm2/s 2.9
4.8

Alloy Composition

Aluminum (Al), % 0.1 to 0.5
0
Boron (B), % 0 to 0.020
0
Carbon (C), % 0.050 to 0.15
0.3 to 0.5
Chromium (Cr), % 21 to 23
16 to 19
Cobalt (Co), % 16 to 21
0
Iron (Fe), % 20.4 to 38.2
75.4 to 82.7
Lanthanum (La), % 0.0050 to 0.1
0
Manganese (Mn), % 0.5 to 2.0
0 to 1.0
Molybdenum (Mo), % 2.5 to 4.0
0 to 0.5
Nickel (Ni), % 19 to 22.5
0 to 1.0
Niobium (Nb), % 0 to 0.3
0
Nitrogen (N), % 0.1 to 0.3
0
Phosphorus (P), % 0 to 0.040
0 to 0.040
Silicon (Si), % 0.2 to 0.8
1.0 to 2.5
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