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R30556 Alloy vs. EN 1.4640 Stainless Steel

Both R30556 alloy and EN 1.4640 stainless steel are iron alloys. They have 56% of their average alloy composition in common. There are 32 material properties with values for both materials. Properties with values for just one material (1, in this case) are not shown.

For each property being compared, the top bar is R30556 alloy and the bottom bar is EN 1.4640 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 210
200
Elongation at Break, % 45
51
Fatigue Strength, MPa 320
230 to 250
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 81
77
Shear Strength, MPa 550
440 to 460
Tensile Strength: Ultimate (UTS), MPa 780
620 to 650
Tensile Strength: Yield (Proof), MPa 350
240 to 260

Thermal Properties

Latent Heat of Fusion, J/g 300
280
Maximum Temperature: Corrosion, °C 450
420
Maximum Temperature: Mechanical, °C 1100
930
Melting Completion (Liquidus), °C 1420
1420
Melting Onset (Solidus), °C 1330
1380
Specific Heat Capacity, J/kg-K 450
480
Thermal Conductivity, W/m-K 11
15
Thermal Expansion, µm/m-K 15
16

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 1.8
2.4
Electrical Conductivity: Equal Weight (Specific), % IACS 1.9
2.7

Otherwise Unclassified Properties

Base Metal Price, % relative 70
14
Density, g/cm3 8.4
7.8
Embodied Carbon, kg CO2/kg material 8.7
2.8
Embodied Energy, MJ/kg 130
40
Embodied Water, L/kg 300
150

Common Calculations

PREN (Pitting Resistance) 40
20
Resilience: Ultimate (Unit Rupture Work), MJ/m3 290
250 to 260
Resilience: Unit (Modulus of Resilience), kJ/m3 290
150 to 170
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 23
25
Strength to Weight: Axial, points 26
22 to 23
Strength to Weight: Bending, points 22
21
Thermal Diffusivity, mm2/s 2.9
4.0
Thermal Shock Resistance, points 18
14 to 15

Alloy Composition

Aluminum (Al), % 0.1 to 0.5
0
Boron (B), % 0 to 0.020
0
Carbon (C), % 0.050 to 0.15
0.030 to 0.080
Chromium (Cr), % 21 to 23
18 to 19
Cobalt (Co), % 16 to 21
0
Copper (Cu), % 0
1.3 to 2.0
Iron (Fe), % 20.4 to 38.2
67.4 to 73.6
Lanthanum (La), % 0.0050 to 0.1
0
Manganese (Mn), % 0.5 to 2.0
1.5 to 4.0
Molybdenum (Mo), % 2.5 to 4.0
0
Nickel (Ni), % 19 to 22.5
5.5 to 6.9
Niobium (Nb), % 0 to 0.3
0
Nitrogen (N), % 0.1 to 0.3
0.030 to 0.11
Phosphorus (P), % 0 to 0.040
0 to 0.045
Silicon (Si), % 0.2 to 0.8
0 to 0.5
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