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EN 1.4931 Steel vs. ACI-ASTM CN7M Steel

Both EN 1.4931 steel and ACI-ASTM CN7M 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 EN 1.4931 steel and the bottom bar is ACI-ASTM CN7M steel.

Metric UnitsUS Customary Units

Mechanical Properties

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

Thermal Properties

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

Electrical Properties

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

Otherwise Unclassified Properties

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

Common Calculations

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

Alloy Composition

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