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R30556 Alloy vs. EN 1.4024 Stainless Steel

Both R30556 alloy and EN 1.4024 stainless steel are iron alloys. They have 43% of their average alloy composition in common.

For each property being compared, the top bar is R30556 alloy and the bottom bar is EN 1.4024 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 210
190
Elongation at Break, % 45
15 to 22
Fatigue Strength, MPa 320
220 to 300
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 81
76
Shear Strength, MPa 550
370 to 460
Tensile Strength: Ultimate (UTS), MPa 780
590 to 750
Tensile Strength: Yield (Proof), MPa 350
330 to 510

Thermal Properties

Latent Heat of Fusion, J/g 300
270
Maximum Temperature: Corrosion, °C 450
390
Maximum Temperature: Mechanical, °C 1100
760
Melting Completion (Liquidus), °C 1420
1440
Melting Onset (Solidus), °C 1330
1400
Specific Heat Capacity, J/kg-K 450
480
Thermal Conductivity, W/m-K 11
30
Thermal Expansion, µm/m-K 15
11

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 1.8
2.9
Electrical Conductivity: Equal Weight (Specific), % IACS 1.9
3.3

Otherwise Unclassified Properties

Base Metal Price, % relative 70
7.0
Density, g/cm3 8.4
7.7
Embodied Carbon, kg CO2/kg material 8.7
1.9
Embodied Energy, MJ/kg 130
27
Embodied Water, L/kg 300
100

Common Calculations

PREN (Pitting Resistance) 40
13
Resilience: Ultimate (Unit Rupture Work), MJ/m3 290
98 to 110
Resilience: Unit (Modulus of Resilience), kJ/m3 290
280 to 660
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 23
25
Strength to Weight: Axial, points 26
21 to 27
Strength to Weight: Bending, points 22
20 to 24
Thermal Diffusivity, mm2/s 2.9
8.1
Thermal Shock Resistance, points 18
21 to 26

Alloy Composition

Aluminum (Al), % 0.1 to 0.5
0
Boron (B), % 0 to 0.020
0
Carbon (C), % 0.050 to 0.15
0.12 to 0.17
Chromium (Cr), % 21 to 23
12 to 14
Cobalt (Co), % 16 to 21
0
Iron (Fe), % 20.4 to 38.2
83.8 to 87.9
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
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 0.040
Silicon (Si), % 0.2 to 0.8
0 to 1.0
Sulfur (S), % 0 to 0.015
0 to 0.015
Tantalum (Ta), % 0.3 to 1.3
0
Tungsten (W), % 2.0 to 3.5
0
Zinc (Zn), % 0.0010 to 0.1
0