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R30556 Alloy vs. S32803 Stainless Steel

Both R30556 alloy and S32803 stainless steel are iron alloys. Both are furnished in the annealed condition. They have 58% 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 S32803 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 210
210
Elongation at Break, % 45
18
Fatigue Strength, MPa 320
350
Poisson's Ratio 0.28
0.27
Shear Modulus, GPa 81
81
Shear Strength, MPa 550
420
Tensile Strength: Ultimate (UTS), MPa 780
680
Tensile Strength: Yield (Proof), MPa 350
560

Thermal Properties

Latent Heat of Fusion, J/g 300
300
Maximum Temperature: Corrosion, °C 450
510
Maximum Temperature: Mechanical, °C 1100
1100
Melting Completion (Liquidus), °C 1420
1450
Melting Onset (Solidus), °C 1330
1400
Specific Heat Capacity, J/kg-K 450
480
Thermal Conductivity, W/m-K 11
16
Thermal Expansion, µm/m-K 15
11

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 1.8
2.3
Electrical Conductivity: Equal Weight (Specific), % IACS 1.9
2.6

Otherwise Unclassified Properties

Base Metal Price, % relative 70
19
Density, g/cm3 8.4
7.7
Embodied Carbon, kg CO2/kg material 8.7
3.7
Embodied Energy, MJ/kg 130
53
Embodied Water, L/kg 300
180

Common Calculations

PREN (Pitting Resistance) 40
36
Resilience: Ultimate (Unit Rupture Work), MJ/m3 290
120
Resilience: Unit (Modulus of Resilience), kJ/m3 290
760
Stiffness to Weight: Axial, points 14
15
Stiffness to Weight: Bending, points 23
25
Strength to Weight: Axial, points 26
25
Strength to Weight: Bending, points 22
22
Thermal Diffusivity, mm2/s 2.9
4.4
Thermal Shock Resistance, points 18
22

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 0.015
Chromium (Cr), % 21 to 23
28 to 29
Cobalt (Co), % 16 to 21
0
Iron (Fe), % 20.4 to 38.2
62.9 to 67.1
Lanthanum (La), % 0.0050 to 0.1
0
Manganese (Mn), % 0.5 to 2.0
0 to 0.5
Molybdenum (Mo), % 2.5 to 4.0
1.8 to 2.5
Nickel (Ni), % 19 to 22.5
3.0 to 4.0
Niobium (Nb), % 0 to 0.3
0.15 to 0.5
Nitrogen (N), % 0.1 to 0.3
0 to 0.020
Phosphorus (P), % 0 to 0.040
0 to 0.020
Silicon (Si), % 0.2 to 0.8
0 to 0.55
Sulfur (S), % 0 to 0.015
0 to 0.0035
Tantalum (Ta), % 0.3 to 1.3
0
Tungsten (W), % 2.0 to 3.5
0
Zinc (Zn), % 0.0010 to 0.1
0