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R30556 Alloy vs. S40910 Stainless Steel

Both R30556 alloy and S40910 stainless steel are iron alloys. Both are furnished in the annealed condition. They have 42% of their average alloy composition in common. There are 32 material properties with values for both materials. Properties with values for just one material (2, in this case) are not shown.

For each property being compared, the top bar is R30556 alloy and the bottom bar is S40910 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 210
190
Elongation at Break, % 45
23
Fatigue Strength, MPa 320
130
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 81
75
Shear Strength, MPa 550
270
Tensile Strength: Ultimate (UTS), MPa 780
430
Tensile Strength: Yield (Proof), MPa 350
190

Thermal Properties

Latent Heat of Fusion, J/g 300
270
Maximum Temperature: Corrosion, °C 450
440
Maximum Temperature: Mechanical, °C 1100
710
Melting Completion (Liquidus), °C 1420
1450
Melting Onset (Solidus), °C 1330
1410
Specific Heat Capacity, J/kg-K 450
480
Thermal Conductivity, W/m-K 11
26
Thermal Expansion, µm/m-K 15
10

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
7.8
Embodied Carbon, kg CO2/kg material 8.7
2.0
Embodied Energy, MJ/kg 130
28
Embodied Water, L/kg 300
94

Common Calculations

PREN (Pitting Resistance) 40
11
Resilience: Ultimate (Unit Rupture Work), MJ/m3 290
80
Resilience: Unit (Modulus of Resilience), kJ/m3 290
94
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 23
25
Strength to Weight: Axial, points 26
16
Strength to Weight: Bending, points 22
16
Thermal Diffusivity, mm2/s 2.9
6.9
Thermal Shock Resistance, points 18
16

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 to 0.030
Chromium (Cr), % 21 to 23
10.5 to 11.7
Cobalt (Co), % 16 to 21
0
Iron (Fe), % 20.4 to 38.2
85 to 89.5
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 to 0.5
Niobium (Nb), % 0 to 0.3
0 to 0.17
Nitrogen (N), % 0.1 to 0.3
0 to 0.030
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 0.020
Tantalum (Ta), % 0.3 to 1.3
0
Titanium (Ti), % 0
0 to 0.5
Tungsten (W), % 2.0 to 3.5
0
Zinc (Zn), % 0.0010 to 0.1
0