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EN 1.6781 Steel vs. ACI-ASTM CG12 Steel

Both EN 1.6781 steel and ACI-ASTM CG12 steel are iron alloys. They have 71% of their average alloy composition in common. There are 31 material properties with values for both materials. Properties with values for just one material (1, in this case) are not shown.

For each property being compared, the top bar is EN 1.6781 steel and the bottom bar is ACI-ASTM CG12 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 250
160
Elastic (Young's, Tensile) Modulus, GPa 190
200
Elongation at Break, % 17
40
Fatigue Strength, MPa 450
190
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 73
78
Tensile Strength: Ultimate (UTS), MPa 830
550
Tensile Strength: Yield (Proof), MPa 680
220

Thermal Properties

Latent Heat of Fusion, J/g 260
300
Maximum Temperature: Mechanical, °C 450
1040
Melting Completion (Liquidus), °C 1460
1410
Melting Onset (Solidus), °C 1420
1370
Specific Heat Capacity, J/kg-K 470
480
Thermal Conductivity, W/m-K 44
15
Thermal Expansion, µm/m-K 13
16

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.9
2.1
Electrical Conductivity: Equal Weight (Specific), % IACS 9.1
2.4

Otherwise Unclassified Properties

Base Metal Price, % relative 5.0
18
Density, g/cm3 7.9
7.8
Embodied Carbon, kg CO2/kg material 1.9
3.3
Embodied Energy, MJ/kg 25
48
Embodied Water, L/kg 60
160

Common Calculations

PREN (Pitting Resistance) 3.3
22
Resilience: Ultimate (Unit Rupture Work), MJ/m3 130
180
Resilience: Unit (Modulus of Resilience), kJ/m3 1220
120
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 24
25
Strength to Weight: Axial, points 29
20
Strength to Weight: Bending, points 25
19
Thermal Diffusivity, mm2/s 12
4.0
Thermal Shock Resistance, points 24
12

Alloy Composition

Carbon (C), % 0.15 to 0.19
0 to 0.12
Chromium (Cr), % 1.3 to 1.8
20 to 23
Iron (Fe), % 92.6 to 94.6
60.3 to 70
Manganese (Mn), % 0.55 to 0.8
0 to 1.5
Molybdenum (Mo), % 0.45 to 0.6
0
Nickel (Ni), % 3.0 to 3.5
10 to 13
Phosphorus (P), % 0 to 0.015
0 to 0.040
Silicon (Si), % 0 to 0.5
0 to 2.0
Sulfur (S), % 0 to 0.015
0 to 0.040