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ACI-ASTM CN7M Steel vs. EN 1.0303 Steel

Both ACI-ASTM CN7M steel and EN 1.0303 steel are iron alloys. They have 43% 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 ACI-ASTM CN7M steel and the bottom bar is EN 1.0303 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 140
84 to 120
Elastic (Young's, Tensile) Modulus, GPa 200
190
Elongation at Break, % 44
12 to 25
Fatigue Strength, MPa 190
150 to 230
Poisson's Ratio 0.28
0.29
Shear Modulus, GPa 77
73
Tensile Strength: Ultimate (UTS), MPa 480
290 to 410
Tensile Strength: Yield (Proof), MPa 200
200 to 320

Thermal Properties

Latent Heat of Fusion, J/g 310
250
Maximum Temperature: Mechanical, °C 1100
400
Melting Completion (Liquidus), °C 1410
1470
Melting Onset (Solidus), °C 1450
1430
Specific Heat Capacity, J/kg-K 470
470
Thermal Conductivity, W/m-K 21
53
Thermal Expansion, µm/m-K 15
12

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 1.6
6.9
Electrical Conductivity: Equal Weight (Specific), % IACS 1.8
7.9

Otherwise Unclassified Properties

Base Metal Price, % relative 32
1.8
Density, g/cm3 8.1
7.9
Embodied Carbon, kg CO2/kg material 5.6
1.4
Embodied Energy, MJ/kg 78
18
Embodied Water, L/kg 210
46

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 170
30 to 94
Resilience: Unit (Modulus of Resilience), kJ/m3 110
110 to 270
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 24
24
Strength to Weight: Axial, points 17
10 to 15
Strength to Weight: Bending, points 17
12 to 16
Thermal Diffusivity, mm2/s 5.6
14
Thermal Shock Resistance, points 12
9.2 to 13

Alloy Composition

Aluminum (Al), % 0
0.020 to 0.060
Carbon (C), % 0 to 0.070
0.020 to 0.060
Chromium (Cr), % 19 to 22
0
Copper (Cu), % 3.0 to 4.0
0
Iron (Fe), % 37.4 to 48.5
99.335 to 99.71
Manganese (Mn), % 0 to 1.5
0.25 to 0.4
Molybdenum (Mo), % 2.0 to 3.0
0
Nickel (Ni), % 27.5 to 30.5
0
Phosphorus (P), % 0 to 0.040
0 to 0.020
Silicon (Si), % 0 to 1.5
0 to 0.1
Sulfur (S), % 0 to 0.040
0 to 0.025