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ACI-ASTM CN7M Steel vs. EN 1.4931 Steel

Both ACI-ASTM CN7M steel and EN 1.4931 steel are iron alloys. They have 57% 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 ACI-ASTM CN7M steel and the bottom bar is EN 1.4931 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 140
240
Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 44
17
Fatigue Strength, MPa 190
410
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 77
76
Tensile Strength: Ultimate (UTS), MPa 480
810
Tensile Strength: Yield (Proof), MPa 200
620

Thermal Properties

Latent Heat of Fusion, J/g 310
270
Maximum Temperature: Mechanical, °C 1100
600
Melting Completion (Liquidus), °C 1410
1460
Melting Onset (Solidus), °C 1450
1420
Specific Heat Capacity, J/kg-K 470
470
Thermal Conductivity, W/m-K 21
24
Thermal Expansion, µm/m-K 15
14

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 1.6
9.8
Electrical Conductivity: Equal Weight (Specific), % IACS 1.8
11

Otherwise Unclassified Properties

Base Metal Price, % relative 32
8.5
Density, g/cm3 8.1
7.8
Embodied Carbon, kg CO2/kg material 5.6
2.9
Embodied Energy, MJ/kg 78
42
Embodied Water, L/kg 210
100

Common Calculations

PREN (Pitting Resistance) 29
16
Resilience: Ultimate (Unit Rupture Work), MJ/m3 170
130
Resilience: Unit (Modulus of Resilience), kJ/m3 110
970
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 24
25
Strength to Weight: Axial, points 17
29
Strength to Weight: Bending, points 17
25
Thermal Diffusivity, mm2/s 5.6
6.5
Thermal Shock Resistance, points 12
22

Alloy Composition

Carbon (C), % 0 to 0.070
0.2 to 0.26
Chromium (Cr), % 19 to 22
11.3 to 12.2
Copper (Cu), % 3.0 to 4.0
0
Iron (Fe), % 37.4 to 48.5
83.2 to 86.8
Manganese (Mn), % 0 to 1.5
0.5 to 0.8
Molybdenum (Mo), % 2.0 to 3.0
1.0 to 1.2
Nickel (Ni), % 27.5 to 30.5
0 to 1.0
Phosphorus (P), % 0 to 0.040
0 to 0.030
Silicon (Si), % 0 to 1.5
0 to 0.4
Sulfur (S), % 0 to 0.040
0 to 0.020
Tungsten (W), % 0
0 to 0.5
Vanadium (V), % 0
0.25 to 0.35