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R30556 Alloy vs. S15700 Stainless Steel

Both R30556 alloy and S15700 stainless steel are iron alloys. They have 55% 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 S15700 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 210
200
Elongation at Break, % 45
1.1 to 29
Fatigue Strength, MPa 320
370 to 770
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 81
77
Shear Strength, MPa 550
770 to 1070
Tensile Strength: Ultimate (UTS), MPa 780
1180 to 1890
Tensile Strength: Yield (Proof), MPa 350
500 to 1770

Thermal Properties

Latent Heat of Fusion, J/g 300
290
Maximum Temperature: Corrosion, °C 450
400
Maximum Temperature: Mechanical, °C 1100
870
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
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
15
Density, g/cm3 8.4
7.8
Embodied Carbon, kg CO2/kg material 8.7
3.4
Embodied Energy, MJ/kg 130
47
Embodied Water, L/kg 300
140

Common Calculations

PREN (Pitting Resistance) 40
23
Resilience: Ultimate (Unit Rupture Work), MJ/m3 290
17 to 270
Resilience: Unit (Modulus of Resilience), kJ/m3 290
640 to 4660
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 23
25
Strength to Weight: Axial, points 26
42 to 67
Strength to Weight: Bending, points 22
32 to 43
Thermal Diffusivity, mm2/s 2.9
4.2
Thermal Shock Resistance, points 18
39 to 63

Alloy Composition

Aluminum (Al), % 0.1 to 0.5
0.75 to 1.5
Boron (B), % 0 to 0.020
0
Carbon (C), % 0.050 to 0.15
0 to 0.090
Chromium (Cr), % 21 to 23
14 to 16
Cobalt (Co), % 16 to 21
0
Iron (Fe), % 20.4 to 38.2
69.6 to 76.8
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
2.0 to 3.0
Nickel (Ni), % 19 to 22.5
6.5 to 7.7
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 0.030
Tantalum (Ta), % 0.3 to 1.3
0
Tungsten (W), % 2.0 to 3.5
0
Zinc (Zn), % 0.0010 to 0.1
0