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R30556 Alloy vs. S44627 Stainless Steel

Both R30556 alloy and S44627 stainless steel are iron alloys. Both are furnished in the annealed condition. They have 53% of their average alloy composition in common. There are 32 material properties with values for both materials. Properties with values for just one material (3, in this case) are not shown.

For each property being compared, the top bar is R30556 alloy and the bottom bar is S44627 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 210
200
Elongation at Break, % 45
24
Fatigue Strength, MPa 320
200
Poisson's Ratio 0.28
0.27
Shear Modulus, GPa 81
80
Shear Strength, MPa 550
310
Tensile Strength: Ultimate (UTS), MPa 780
490
Tensile Strength: Yield (Proof), MPa 350
300

Thermal Properties

Latent Heat of Fusion, J/g 300
290
Maximum Temperature: Corrosion, °C 450
470
Maximum Temperature: Mechanical, °C 1100
1100
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
17
Thermal Expansion, µm/m-K 15
11

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
14
Density, g/cm3 8.4
7.7
Embodied Carbon, kg CO2/kg material 8.7
2.9
Embodied Energy, MJ/kg 130
41
Embodied Water, L/kg 300
160

Common Calculations

PREN (Pitting Resistance) 40
30
Resilience: Ultimate (Unit Rupture Work), MJ/m3 290
100
Resilience: Unit (Modulus of Resilience), kJ/m3 290
220
Stiffness to Weight: Axial, points 14
15
Stiffness to Weight: Bending, points 23
25
Strength to Weight: Axial, points 26
18
Strength to Weight: Bending, points 22
18
Thermal Diffusivity, mm2/s 2.9
4.6
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 0.010
Chromium (Cr), % 21 to 23
25 to 27.5
Cobalt (Co), % 16 to 21
0
Copper (Cu), % 0
0 to 0.2
Iron (Fe), % 20.4 to 38.2
69.2 to 74.2
Lanthanum (La), % 0.0050 to 0.1
0
Manganese (Mn), % 0.5 to 2.0
0 to 0.4
Molybdenum (Mo), % 2.5 to 4.0
0.75 to 1.5
Nickel (Ni), % 19 to 22.5
0 to 0.5
Niobium (Nb), % 0 to 0.3
0.050 to 0.2
Nitrogen (N), % 0.1 to 0.3
0 to 0.015
Phosphorus (P), % 0 to 0.040
0 to 0.020
Silicon (Si), % 0.2 to 0.8
0 to 0.4
Sulfur (S), % 0 to 0.015
0 to 0.020
Tantalum (Ta), % 0.3 to 1.3
0
Tungsten (W), % 2.0 to 3.5
0
Zinc (Zn), % 0.0010 to 0.1
0