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SAE-AISI D2 Steel vs. ACI-ASTM CN7M Steel

Both SAE-AISI D2 steel and ACI-ASTM CN7M steel are iron alloys. They have 57% of their average alloy composition in common. There are 29 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 D2 steel and the bottom bar is ACI-ASTM CN7M steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
200
Elongation at Break, % 5.0 to 16
44
Fatigue Strength, MPa 310 to 860
190
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 75
77
Tensile Strength: Ultimate (UTS), MPa 760 to 2000
480
Tensile Strength: Yield (Proof), MPa 470 to 1510
200

Thermal Properties

Latent Heat of Fusion, J/g 270
310
Melting Completion (Liquidus), °C 1440
1410
Melting Onset (Solidus), °C 1390
1450
Specific Heat Capacity, J/kg-K 480
470
Thermal Conductivity, W/m-K 31
21
Thermal Expansion, µm/m-K 11
15

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 4.3
1.6
Electrical Conductivity: Equal Weight (Specific), % IACS 5.1
1.8

Otherwise Unclassified Properties

Base Metal Price, % relative 8.0
32
Density, g/cm3 7.7
8.1
Embodied Carbon, kg CO2/kg material 3.4
5.6
Embodied Energy, MJ/kg 50
78
Embodied Water, L/kg 100
210

Common Calculations

PREN (Pitting Resistance) 15
29
Resilience: Ultimate (Unit Rupture Work), MJ/m3 92 to 100
170
Resilience: Unit (Modulus of Resilience), kJ/m3 570 to 5940
110
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
24
Strength to Weight: Axial, points 27 to 72
17
Strength to Weight: Bending, points 24 to 46
17
Thermal Diffusivity, mm2/s 8.3
5.6
Thermal Shock Resistance, points 25 to 67
12

Alloy Composition

Carbon (C), % 1.4 to 1.6
0 to 0.070
Chromium (Cr), % 11 to 13
19 to 22
Copper (Cu), % 0 to 0.25
3.0 to 4.0
Iron (Fe), % 81.3 to 86.9
37.4 to 48.5
Manganese (Mn), % 0 to 0.6
0 to 1.5
Molybdenum (Mo), % 0.7 to 1.2
2.0 to 3.0
Nickel (Ni), % 0 to 0.3
27.5 to 30.5
Phosphorus (P), % 0 to 0.030
0 to 0.040
Silicon (Si), % 0 to 0.6
0 to 1.5
Sulfur (S), % 0 to 0.030
0 to 0.040
Vanadium (V), % 0 to 1.1
0