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ACI-ASTM CN7MS Steel vs. ASTM A182 Grade F5a

Both ACI-ASTM CN7MS steel and ASTM A182 grade F5a are iron alloys. They have 56% of their average alloy composition in common. There are 29 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 A182 grade F5a.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 160
310
Elastic (Young's, Tensile) Modulus, GPa 200
190
Elongation at Break, % 39
25
Fatigue Strength, MPa 200
380
Poisson's Ratio 0.28
0.29
Shear Modulus, GPa 77
74
Tensile Strength: Ultimate (UTS), MPa 540
710
Tensile Strength: Yield (Proof), MPa 230
520

Thermal Properties

Latent Heat of Fusion, J/g 340
260
Maximum Temperature: Mechanical, °C 1040
510
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
40
Thermal Expansion, µm/m-K 16
13

Otherwise Unclassified Properties

Base Metal Price, % relative 28
4.5
Density, g/cm3 7.9
7.8
Embodied Carbon, kg CO2/kg material 5.1
1.8
Embodied Energy, MJ/kg 71
24
Embodied Water, L/kg 180
69

Common Calculations

PREN (Pitting Resistance) 28
6.8
Resilience: Ultimate (Unit Rupture Work), MJ/m3 170
160
Resilience: Unit (Modulus of Resilience), kJ/m3 140
700
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 19
25
Strength to Weight: Bending, points 19
23
Thermal Diffusivity, mm2/s 3.2
11
Thermal Shock Resistance, points 13
20

Alloy Composition

Carbon (C), % 0 to 0.070
0 to 0.25
Chromium (Cr), % 18 to 20
4.0 to 6.0
Copper (Cu), % 1.5 to 2.0
0
Iron (Fe), % 45.4 to 53.5
91.4 to 95.6
Manganese (Mn), % 0 to 1.0
0 to 0.6
Molybdenum (Mo), % 2.5 to 3.0
0.44 to 0.65
Nickel (Ni), % 22 to 25
0 to 0.5
Phosphorus (P), % 0 to 0.040
0 to 0.040
Silicon (Si), % 2.5 to 3.5
0 to 0.5
Sulfur (S), % 0 to 0.030
0 to 0.030