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ACI-ASTM CN7MS Steel vs. ASTM A572 Steel

Both ACI-ASTM CN7MS steel and ASTM A572 steel are iron alloys. There are 28 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 ACI-ASTM CN7MS steel and the bottom bar is ASTM A572 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 160
140 to 190
Elastic (Young's, Tensile) Modulus, GPa 200
190
Elongation at Break, % 39
18 to 25
Fatigue Strength, MPa 200
240 to 340
Poisson's Ratio 0.28
0.29
Shear Modulus, GPa 77
73
Tensile Strength: Ultimate (UTS), MPa 540
470 to 620
Tensile Strength: Yield (Proof), MPa 230
330 to 510

Thermal Properties

Latent Heat of Fusion, J/g 340
250
Maximum Temperature: Mechanical, °C 1040
400
Melting Completion (Liquidus), °C 1400
1460
Melting Onset (Solidus), °C 1350
1420
Specific Heat Capacity, J/kg-K 480
470
Thermal Conductivity, W/m-K 12
51
Thermal Expansion, µm/m-K 16
13

Otherwise Unclassified Properties

Base Metal Price, % relative 28
2.0
Density, g/cm3 7.9
7.8
Embodied Carbon, kg CO2/kg material 5.1
1.6
Embodied Energy, MJ/kg 71
22
Embodied Water, L/kg 180
47

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 170
100 to 110
Resilience: Unit (Modulus of Resilience), kJ/m3 140
290 to 690
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 25
24
Strength to Weight: Axial, points 19
17 to 22
Strength to Weight: Bending, points 19
17 to 21
Thermal Diffusivity, mm2/s 3.2
14
Thermal Shock Resistance, points 13
14 to 18