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EN 1.7703 Steel vs. ACI-ASTM CK3MCuN Steel

Both EN 1.7703 steel and ACI-ASTM CK3MCuN steel are iron alloys. They have 57% 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 1.7703 steel and the bottom bar is ACI-ASTM CK3MCuN steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 200 to 210
180
Elastic (Young's, Tensile) Modulus, GPa 190
200
Elongation at Break, % 20
39
Fatigue Strength, MPa 320 to 340
250
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 74
80
Tensile Strength: Ultimate (UTS), MPa 670 to 690
620
Tensile Strength: Yield (Proof), MPa 460 to 500
290

Thermal Properties

Latent Heat of Fusion, J/g 250
300
Maximum Temperature: Mechanical, °C 460
1090
Melting Completion (Liquidus), °C 1470
1460
Melting Onset (Solidus), °C 1430
1350
Specific Heat Capacity, J/kg-K 470
460
Thermal Conductivity, W/m-K 39
12
Thermal Expansion, µm/m-K 13
16

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.6
1.9
Electrical Conductivity: Equal Weight (Specific), % IACS 8.7
2.1

Otherwise Unclassified Properties

Base Metal Price, % relative 4.2
29
Density, g/cm3 7.9
8.0
Embodied Carbon, kg CO2/kg material 2.5
5.6
Embodied Energy, MJ/kg 35
76
Embodied Water, L/kg 61
190

Common Calculations

PREN (Pitting Resistance) 5.6
45
Resilience: Ultimate (Unit Rupture Work), MJ/m3 120 to 130
200
Resilience: Unit (Modulus of Resilience), kJ/m3 570 to 650
210
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 24
24
Strength to Weight: Axial, points 24
21
Strength to Weight: Bending, points 22
20
Thermal Diffusivity, mm2/s 11
3.2
Thermal Shock Resistance, points 19 to 20
14

Alloy Composition

Carbon (C), % 0.11 to 0.15
0 to 0.025
Chromium (Cr), % 2.0 to 2.5
19.5 to 20.5
Copper (Cu), % 0 to 0.2
0.5 to 1.0
Iron (Fe), % 94.6 to 96.4
49.5 to 56.3
Manganese (Mn), % 0.3 to 0.6
0 to 1.2
Molybdenum (Mo), % 0.9 to 1.1
6.0 to 7.0
Nickel (Ni), % 0 to 0.25
17.5 to 19.5
Niobium (Nb), % 0 to 0.070
0
Nitrogen (N), % 0 to 0.012
0.18 to 0.24
Phosphorus (P), % 0 to 0.015
0 to 0.045
Silicon (Si), % 0 to 0.1
0 to 1.0
Sulfur (S), % 0 to 0.0050
0 to 0.010
Titanium (Ti), % 0 to 0.030
0
Vanadium (V), % 0.25 to 0.35
0