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ACI-ASTM CA6N Steel vs. R05255 Alloy

ACI-ASTM CA6N steel belongs to the iron alloys classification, while R05255 alloy belongs to the otherwise unclassified metals. There are 20 material properties with values for both materials. Properties with values for just one material (12, in this case) are not shown. Please note that the two materials have significantly dissimilar densities. This means that additional care is required when interpreting the data, because some material properties are based on units of mass, while others are based on units of area or volume.

For each property being compared, the top bar is ACI-ASTM CA6N steel and the bottom bar is R05255 alloy.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
190
Elongation at Break, % 17
20
Poisson's Ratio 0.28
0.34
Shear Modulus, GPa 75
70
Tensile Strength: Ultimate (UTS), MPa 1080
540
Tensile Strength: Yield (Proof), MPa 1060
450

Thermal Properties

Latent Heat of Fusion, J/g 280
140
Specific Heat Capacity, J/kg-K 480
140
Thermal Conductivity, W/m-K 23
59
Thermal Expansion, µm/m-K 9.9
6.6

Otherwise Unclassified Properties

Density, g/cm3 7.8
17
Embodied Water, L/kg 110
630

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 180
100
Resilience: Unit (Modulus of Resilience), kJ/m3 2900
530
Stiffness to Weight: Axial, points 14
6.3
Stiffness to Weight: Bending, points 25
11
Strength to Weight: Axial, points 38
9.1
Strength to Weight: Bending, points 30
8.9
Thermal Diffusivity, mm2/s 6.1
25
Thermal Shock Resistance, points 40
31

Alloy Composition

Carbon (C), % 0 to 0.060
0 to 0.010
Chromium (Cr), % 10.5 to 12.5
0
Hydrogen (H), % 0
0 to 0.0015
Iron (Fe), % 77.9 to 83.5
0 to 0.010
Manganese (Mn), % 0 to 0.5
0
Molybdenum (Mo), % 0
0 to 0.020
Nickel (Ni), % 6.0 to 8.0
0 to 0.010
Niobium (Nb), % 0
0 to 0.5
Nitrogen (N), % 0
0 to 0.010
Oxygen (O), % 0
0 to 0.015
Phosphorus (P), % 0 to 0.020
0
Silicon (Si), % 0 to 1.0
0 to 0.0050
Sulfur (S), % 0 to 0.020
0
Tantalum (Ta), % 0
95.9 to 98
Titanium (Ti), % 0
0 to 0.010
Tungsten (W), % 0
2.0 to 3.5