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ACI-ASTM CN7MS Steel vs. ASTM A209 Steel

Both ACI-ASTM CN7MS steel and ASTM A209 steel are iron alloys. There are 28 material properties with values for both materials. Properties with values for just one material (6, 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 A209 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 160
140 to 150
Elastic (Young's, Tensile) Modulus, GPa 200
190
Elongation at Break, % 39
34
Fatigue Strength, MPa 200
180 to 200
Poisson's Ratio 0.28
0.29
Shear Modulus, GPa 77
73
Tensile Strength: Ultimate (UTS), MPa 540
420 to 460
Tensile Strength: Yield (Proof), MPa 230
220 to 250

Thermal Properties

Latent Heat of Fusion, J/g 340
250
Maximum Temperature: Mechanical, °C 1040
410
Melting Completion (Liquidus), °C 1400
1470
Melting Onset (Solidus), °C 1350
1420 to 1430
Specific Heat Capacity, J/kg-K 480
470
Thermal Conductivity, W/m-K 12
50
Thermal Expansion, µm/m-K 16
13

Otherwise Unclassified Properties

Base Metal Price, % relative 28
2.4
Density, g/cm3 7.9
7.9
Embodied Carbon, kg CO2/kg material 5.1
1.5
Embodied Energy, MJ/kg 71
20
Embodied Water, L/kg 180
47

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 170
120 to 130
Resilience: Unit (Modulus of Resilience), kJ/m3 140
130 to 170
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 25
24
Strength to Weight: Axial, points 19
15 to 16
Strength to Weight: Bending, points 19
16 to 17
Thermal Diffusivity, mm2/s 3.2
13
Thermal Shock Resistance, points 13
12 to 14