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EN 1.3551 Steel vs. ACI-ASTM CN7M Steel

Both EN 1.3551 steel and ACI-ASTM CN7M steel are iron alloys. They have 50% of their average alloy composition in common. There are 26 material properties with values for both materials. Properties with values for just one material (6, in this case) are not shown.

For each property being compared, the top bar is EN 1.3551 steel and the bottom bar is ACI-ASTM CN7M steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 220
140
Elastic (Young's, Tensile) Modulus, GPa 190
200
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 75
77
Tensile Strength: Ultimate (UTS), MPa 720
480

Thermal Properties

Latent Heat of Fusion, J/g 260
310
Maximum Temperature: Mechanical, °C 530
1100
Melting Completion (Liquidus), °C 1490
1410
Melting Onset (Solidus), °C 1450
1450
Specific Heat Capacity, J/kg-K 460
470
Thermal Conductivity, W/m-K 36
21
Thermal Expansion, µm/m-K 13
15

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 8.6
1.6
Electrical Conductivity: Equal Weight (Specific), % IACS 9.9
1.8

Otherwise Unclassified Properties

Base Metal Price, % relative 9.0
32
Density, g/cm3 7.9
8.1
Embodied Carbon, kg CO2/kg material 4.9
5.6
Embodied Energy, MJ/kg 71
78
Embodied Water, L/kg 82
210

Common Calculations

PREN (Pitting Resistance) 18
29
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 24
24
Strength to Weight: Axial, points 26
17
Strength to Weight: Bending, points 23
17
Thermal Diffusivity, mm2/s 9.8
5.6
Thermal Shock Resistance, points 21
12

Alloy Composition

Carbon (C), % 0.77 to 0.85
0 to 0.070
Chromium (Cr), % 3.9 to 4.3
19 to 22
Copper (Cu), % 0 to 0.3
3.0 to 4.0
Iron (Fe), % 88.8 to 91.1
37.4 to 48.5
Manganese (Mn), % 0.15 to 0.35
0 to 1.5
Molybdenum (Mo), % 4.0 to 4.5
2.0 to 3.0
Nickel (Ni), % 0
27.5 to 30.5
Phosphorus (P), % 0 to 0.025
0 to 0.040
Silicon (Si), % 0 to 0.4
0 to 1.5
Sulfur (S), % 0 to 0.015
0 to 0.040
Tungsten (W), % 0 to 0.25
0
Vanadium (V), % 0.9 to 1.1
0