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EN 1.3551 Steel vs. ACI-ASTM CN7MS Steel

Both EN 1.3551 steel and ACI-ASTM CN7MS steel are iron alloys. They have 57% of their average alloy composition in common. There are 24 material properties with values for both materials. Properties with values for just one material (8, 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 CN7MS steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 220
160
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
540

Thermal Properties

Latent Heat of Fusion, J/g 260
340
Maximum Temperature: Mechanical, °C 530
1040
Melting Completion (Liquidus), °C 1490
1400
Melting Onset (Solidus), °C 1450
1350
Specific Heat Capacity, J/kg-K 460
480
Thermal Conductivity, W/m-K 36
12
Thermal Expansion, µm/m-K 13
16

Otherwise Unclassified Properties

Base Metal Price, % relative 9.0
28
Density, g/cm3 7.9
7.9
Embodied Carbon, kg CO2/kg material 4.9
5.1
Embodied Energy, MJ/kg 71
71
Embodied Water, L/kg 82
180

Common Calculations

PREN (Pitting Resistance) 18
28
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 24
25
Strength to Weight: Axial, points 26
19
Strength to Weight: Bending, points 23
19
Thermal Diffusivity, mm2/s 9.8
3.2
Thermal Shock Resistance, points 21
13

Alloy Composition

Carbon (C), % 0.77 to 0.85
0 to 0.070
Chromium (Cr), % 3.9 to 4.3
18 to 20
Copper (Cu), % 0 to 0.3
1.5 to 2.0
Iron (Fe), % 88.8 to 91.1
45.4 to 53.5
Manganese (Mn), % 0.15 to 0.35
0 to 1.0
Molybdenum (Mo), % 4.0 to 4.5
2.5 to 3.0
Nickel (Ni), % 0
22 to 25
Phosphorus (P), % 0 to 0.025
0 to 0.040
Silicon (Si), % 0 to 0.4
2.5 to 3.5
Sulfur (S), % 0 to 0.015
0 to 0.030
Tungsten (W), % 0 to 0.25
0
Vanadium (V), % 0.9 to 1.1
0