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ACI-ASTM CN7M Steel vs. ASTM A182 Grade F5a

Both ACI-ASTM CN7M steel and ASTM A182 grade F5a are iron alloys. They have 49% of their average alloy composition in common. There are 31 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 ACI-ASTM CN7M steel and the bottom bar is ASTM A182 grade F5a.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 140
310
Elastic (Young's, Tensile) Modulus, GPa 200
190
Elongation at Break, % 44
25
Fatigue Strength, MPa 190
380
Poisson's Ratio 0.28
0.29
Shear Modulus, GPa 77
74
Tensile Strength: Ultimate (UTS), MPa 480
710
Tensile Strength: Yield (Proof), MPa 200
520

Thermal Properties

Latent Heat of Fusion, J/g 310
260
Maximum Temperature: Mechanical, °C 1100
510
Melting Completion (Liquidus), °C 1410
1460
Melting Onset (Solidus), °C 1450
1420
Specific Heat Capacity, J/kg-K 470
470
Thermal Conductivity, W/m-K 21
40
Thermal Expansion, µm/m-K 15
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 1.6
8.2
Electrical Conductivity: Equal Weight (Specific), % IACS 1.8
9.4

Otherwise Unclassified Properties

Base Metal Price, % relative 32
4.5
Density, g/cm3 8.1
7.8
Embodied Carbon, kg CO2/kg material 5.6
1.8
Embodied Energy, MJ/kg 78
24
Embodied Water, L/kg 210
69

Common Calculations

PREN (Pitting Resistance) 29
6.8
Resilience: Ultimate (Unit Rupture Work), MJ/m3 170
160
Resilience: Unit (Modulus of Resilience), kJ/m3 110
700
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 24
25
Strength to Weight: Axial, points 17
25
Strength to Weight: Bending, points 17
23
Thermal Diffusivity, mm2/s 5.6
11
Thermal Shock Resistance, points 12
20

Alloy Composition

Carbon (C), % 0 to 0.070
0 to 0.25
Chromium (Cr), % 19 to 22
4.0 to 6.0
Copper (Cu), % 3.0 to 4.0
0
Iron (Fe), % 37.4 to 48.5
91.4 to 95.6
Manganese (Mn), % 0 to 1.5
0 to 0.6
Molybdenum (Mo), % 2.0 to 3.0
0.44 to 0.65
Nickel (Ni), % 27.5 to 30.5
0 to 0.5
Phosphorus (P), % 0 to 0.040
0 to 0.040
Silicon (Si), % 0 to 1.5
0 to 0.5
Sulfur (S), % 0 to 0.040
0 to 0.030