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SAE-AISI 1025 Steel vs. ACI-ASTM CK3MCuN Steel

Both SAE-AISI 1025 steel and ACI-ASTM CK3MCuN steel are iron alloys. They have 53% of their average alloy composition in common. There are 30 material properties with values for both materials. Properties with values for just one material (4, in this case) are not shown.

For each property being compared, the top bar is SAE-AISI 1025 steel and the bottom bar is ACI-ASTM CK3MCuN steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 130 to 140
180
Elastic (Young's, Tensile) Modulus, GPa 190
200
Elongation at Break, % 17 to 28
39
Fatigue Strength, MPa 190 to 280
250
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 73
80
Tensile Strength: Ultimate (UTS), MPa 450 to 500
620
Tensile Strength: Yield (Proof), MPa 250 to 420
290

Thermal Properties

Latent Heat of Fusion, J/g 250
300
Maximum Temperature: Mechanical, °C 400
1090
Melting Completion (Liquidus), °C 1460
1460
Melting Onset (Solidus), °C 1420
1350
Specific Heat Capacity, J/kg-K 470
460
Thermal Conductivity, W/m-K 52
12
Thermal Expansion, µm/m-K 12
16

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 6.9
1.9
Electrical Conductivity: Equal Weight (Specific), % IACS 8.0
2.1

Otherwise Unclassified Properties

Base Metal Price, % relative 1.8
29
Density, g/cm3 7.9
8.0
Embodied Carbon, kg CO2/kg material 1.4
5.6
Embodied Energy, MJ/kg 18
76
Embodied Water, L/kg 45
190

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 80 to 110
200
Resilience: Unit (Modulus of Resilience), kJ/m3 170 to 470
210
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 24
24
Strength to Weight: Axial, points 16 to 18
21
Strength to Weight: Bending, points 17 to 18
20
Thermal Diffusivity, mm2/s 14
3.2
Thermal Shock Resistance, points 14 to 16
14

Alloy Composition

Carbon (C), % 0.22 to 0.28
0 to 0.025
Chromium (Cr), % 0
19.5 to 20.5
Copper (Cu), % 0
0.5 to 1.0
Iron (Fe), % 99.03 to 99.48
49.5 to 56.3
Manganese (Mn), % 0.3 to 0.6
0 to 1.2
Molybdenum (Mo), % 0
6.0 to 7.0
Nickel (Ni), % 0
17.5 to 19.5
Nitrogen (N), % 0
0.18 to 0.24
Phosphorus (P), % 0 to 0.040
0 to 0.045
Silicon (Si), % 0
0 to 1.0
Sulfur (S), % 0 to 0.050
0 to 0.010