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EN 1.6958 Steel vs. ACI-ASTM CD4MCuN Steel

Both EN 1.6958 steel and ACI-ASTM CD4MCuN steel are iron alloys. They have 69% of their average alloy composition in common. There are 30 material properties with values for both materials. Properties with values for just one material (5, in this case) are not shown.

For each property being compared, the top bar is EN 1.6958 steel and the bottom bar is ACI-ASTM CD4MCuN steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
200
Elongation at Break, % 16
18
Fatigue Strength, MPa 700
340
Poisson's Ratio 0.29
0.27
Shear Modulus, GPa 73
79
Tensile Strength: Ultimate (UTS), MPa 1140
770
Tensile Strength: Yield (Proof), MPa 1070
550

Thermal Properties

Latent Heat of Fusion, J/g 250
300
Maximum Temperature: Mechanical, °C 450
1100
Melting Completion (Liquidus), °C 1460
1420
Melting Onset (Solidus), °C 1420
1380
Specific Heat Capacity, J/kg-K 470
480
Thermal Conductivity, W/m-K 47
17
Thermal Expansion, µm/m-K 11
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.9
2.2
Electrical Conductivity: Equal Weight (Specific), % IACS 9.1
2.5

Otherwise Unclassified Properties

Base Metal Price, % relative 5.0
18
Density, g/cm3 7.9
7.8
Embodied Carbon, kg CO2/kg material 2.0
3.5
Embodied Energy, MJ/kg 27
49
Embodied Water, L/kg 60
180

Common Calculations

PREN (Pitting Resistance) 2.9
35
Resilience: Ultimate (Unit Rupture Work), MJ/m3 180
130
Resilience: Unit (Modulus of Resilience), kJ/m3 3050
760
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 24
25
Strength to Weight: Axial, points 40
28
Strength to Weight: Bending, points 31
24
Thermal Diffusivity, mm2/s 13
4.5
Thermal Shock Resistance, points 39
21

Alloy Composition

Aluminum (Al), % 0.0050 to 0.050
0
Carbon (C), % 0.25 to 0.3
0 to 0.040
Chromium (Cr), % 1.2 to 1.7
24.5 to 26.5
Copper (Cu), % 0
2.7 to 3.3
Iron (Fe), % 92.6 to 94.5
59.5 to 66.3
Manganese (Mn), % 0.2 to 0.5
0 to 1.0
Molybdenum (Mo), % 0.35 to 0.55
1.7 to 2.3
Nickel (Ni), % 3.3 to 3.8
4.7 to 6.0
Nitrogen (N), % 0
0.1 to 0.25
Phosphorus (P), % 0 to 0.020
0 to 0.040
Silicon (Si), % 0.15 to 0.3
0 to 1.0
Sulfur (S), % 0 to 0.015
0 to 0.040
Vanadium (V), % 0 to 0.12
0