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EN 1.7729 Steel vs. ACI-ASTM CA6NM Steel

Both EN 1.7729 steel and ACI-ASTM CA6NM steel are iron alloys. They have 84% of their average alloy composition in common. There are 32 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 1.7729 steel and the bottom bar is ACI-ASTM CA6NM steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 270
250
Elastic (Young's, Tensile) Modulus, GPa 190
200
Elongation at Break, % 17
17
Fatigue Strength, MPa 500
380
Poisson's Ratio 0.29
0.28
Reduction in Area, % 56
40
Shear Modulus, GPa 73
76
Tensile Strength: Ultimate (UTS), MPa 910
850
Tensile Strength: Yield (Proof), MPa 750
620

Thermal Properties

Latent Heat of Fusion, J/g 250
280
Maximum Temperature: Mechanical, °C 430
770
Melting Completion (Liquidus), °C 1470
1450
Melting Onset (Solidus), °C 1430
1400
Specific Heat Capacity, J/kg-K 470
480
Thermal Conductivity, W/m-K 40
25
Thermal Expansion, µm/m-K 13
10

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.6
2.8
Electrical Conductivity: Equal Weight (Specific), % IACS 8.7
3.2

Otherwise Unclassified Properties

Base Metal Price, % relative 3.8
10
Density, g/cm3 7.8
7.8
Embodied Carbon, kg CO2/kg material 3.3
2.5
Embodied Energy, MJ/kg 49
34
Embodied Water, L/kg 59
110

Common Calculations

PREN (Pitting Resistance) 4.4
15
Resilience: Ultimate (Unit Rupture Work), MJ/m3 150
130
Resilience: Unit (Modulus of Resilience), kJ/m3 1500
1000
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 24
25
Strength to Weight: Axial, points 32
30
Strength to Weight: Bending, points 27
26
Thermal Diffusivity, mm2/s 11
6.7
Thermal Shock Resistance, points 27
31

Alloy Composition

Aluminum (Al), % 0.015 to 0.080
0
Arsenic (As), % 0 to 0.020
0
Boron (B), % 0.0010 to 0.010
0
Carbon (C), % 0.17 to 0.23
0 to 0.060
Chromium (Cr), % 0.9 to 1.2
11.5 to 14
Copper (Cu), % 0 to 0.2
0
Iron (Fe), % 94.8 to 97
78.4 to 84.6
Manganese (Mn), % 0.35 to 0.75
0 to 1.0
Molybdenum (Mo), % 0.9 to 1.1
0.4 to 1.0
Nickel (Ni), % 0 to 0.2
3.5 to 4.5
Phosphorus (P), % 0 to 0.020
0 to 0.040
Silicon (Si), % 0 to 0.4
0 to 1.0
Sulfur (S), % 0 to 0.015
0 to 0.030
Tin (Sn), % 0 to 0.020
0
Titanium (Ti), % 0.070 to 0.15
0
Vanadium (V), % 0.6 to 0.8
0