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EN 1.7715 Steel vs. ACI-ASTM CN7M Steel

Both EN 1.7715 steel and ACI-ASTM CN7M steel are iron alloys. They have 45% of their average alloy composition in common. There are 31 material properties with values for both materials. Properties with values for just one material (3, in this case) are not shown.

For each property being compared, the top bar is EN 1.7715 steel and the bottom bar is ACI-ASTM CN7M steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 160
140
Elastic (Young's, Tensile) Modulus, GPa 190
200
Elongation at Break, % 21
44
Fatigue Strength, MPa 240
190
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 73
77
Tensile Strength: Ultimate (UTS), MPa 540
480
Tensile Strength: Yield (Proof), MPa 340
200

Thermal Properties

Latent Heat of Fusion, J/g 250
310
Maximum Temperature: Mechanical, °C 420
1100
Melting Completion (Liquidus), °C 1470
1410
Melting Onset (Solidus), °C 1430
1450
Specific Heat Capacity, J/kg-K 470
470
Thermal Conductivity, W/m-K 40
21
Thermal Expansion, µm/m-K 13
15

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.3
1.6
Electrical Conductivity: Equal Weight (Specific), % IACS 8.4
1.8

Otherwise Unclassified Properties

Base Metal Price, % relative 2.9
32
Density, g/cm3 7.9
8.1
Embodied Carbon, kg CO2/kg material 2.2
5.6
Embodied Energy, MJ/kg 30
78
Embodied Water, L/kg 52
210

Common Calculations

PREN (Pitting Resistance) 2.4
29
Resilience: Ultimate (Unit Rupture Work), MJ/m3 99
170
Resilience: Unit (Modulus of Resilience), kJ/m3 320
110
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 24
24
Strength to Weight: Axial, points 19
17
Strength to Weight: Bending, points 19
17
Thermal Diffusivity, mm2/s 11
5.6
Thermal Shock Resistance, points 16
12

Alloy Composition

Aluminum (Al), % 0 to 0.040
0
Carbon (C), % 0.1 to 0.15
0 to 0.070
Chromium (Cr), % 0.3 to 0.6
19 to 22
Copper (Cu), % 0 to 0.3
3.0 to 4.0
Iron (Fe), % 96.5 to 98.3
37.4 to 48.5
Manganese (Mn), % 0.4 to 0.7
0 to 1.5
Molybdenum (Mo), % 0.5 to 0.7
2.0 to 3.0
Nickel (Ni), % 0 to 0.3
27.5 to 30.5
Phosphorus (P), % 0 to 0.025
0 to 0.040
Silicon (Si), % 0.15 to 0.35
0 to 1.5
Sulfur (S), % 0 to 0.010
0 to 0.040
Vanadium (V), % 0.22 to 0.28
0