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R30556 Alloy vs. ACI-ASTM CH20 Steel

Both R30556 alloy and ACI-ASTM CH20 steel are iron alloys. They have 66% of their average alloy composition in common. There are 31 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 ACI-ASTM CH20 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 210
200
Elongation at Break, % 45
38
Fatigue Strength, MPa 320
290
Poisson's Ratio 0.28
0.27
Shear Modulus, GPa 81
78
Tensile Strength: Ultimate (UTS), MPa 780
610
Tensile Strength: Yield (Proof), MPa 350
350

Thermal Properties

Latent Heat of Fusion, J/g 300
310
Maximum Temperature: Corrosion, °C 450
440
Maximum Temperature: Mechanical, °C 1100
1100
Melting Completion (Liquidus), °C 1420
1410
Melting Onset (Solidus), °C 1330
1430
Specific Heat Capacity, J/kg-K 450
480
Thermal Conductivity, W/m-K 11
14
Thermal Expansion, µm/m-K 15
15

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 1.8
2.0
Electrical Conductivity: Equal Weight (Specific), % IACS 1.9
2.3

Otherwise Unclassified Properties

Base Metal Price, % relative 70
20
Density, g/cm3 8.4
7.8
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
25
Resilience: Ultimate (Unit Rupture Work), MJ/m3 290
200
Resilience: Unit (Modulus of Resilience), kJ/m3 290
300
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 23
25
Strength to Weight: Axial, points 26
22
Strength to Weight: Bending, points 22
21
Thermal Diffusivity, mm2/s 2.9
3.7
Thermal Shock Resistance, points 18
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 to 0.2
Chromium (Cr), % 21 to 23
22 to 26
Cobalt (Co), % 16 to 21
0
Iron (Fe), % 20.4 to 38.2
54.7 to 66
Lanthanum (La), % 0.0050 to 0.1
0
Manganese (Mn), % 0.5 to 2.0
0 to 1.5
Molybdenum (Mo), % 2.5 to 4.0
0 to 0.5
Nickel (Ni), % 19 to 22.5
12 to 15
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 2.0
Sulfur (S), % 0 to 0.015
0 to 0.040
Tantalum (Ta), % 0.3 to 1.3
0
Tungsten (W), % 2.0 to 3.5
0
Zinc (Zn), % 0.0010 to 0.1
0