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ASTM A356 Grade 5 vs. ACI-ASTM CK35MN Steel

Both ASTM A356 grade 5 and ACI-ASTM CK35MN steel are iron alloys. Both are furnished in the heat treated (HT) condition. 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 (2, in this case) are not shown.

For each property being compared, the top bar is ASTM A356 grade 5 and the bottom bar is ACI-ASTM CK35MN steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 170
190
Elastic (Young's, Tensile) Modulus, GPa 190
210
Elongation at Break, % 25
40
Fatigue Strength, MPa 230
270
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 73
81
Tensile Strength: Ultimate (UTS), MPa 550
650
Tensile Strength: Yield (Proof), MPa 310
310

Thermal Properties

Latent Heat of Fusion, J/g 250
310
Maximum Temperature: Mechanical, °C 420
1100
Melting Completion (Liquidus), °C 1470
1460
Melting Onset (Solidus), °C 1420
1410
Specific Heat Capacity, J/kg-K 470
470
Thermal Conductivity, W/m-K 49
12
Thermal Expansion, µm/m-K 13
16

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.2
1.9
Electrical Conductivity: Equal Weight (Specific), % IACS 8.3
2.1

Otherwise Unclassified Properties

Base Metal Price, % relative 2.6
31
Density, g/cm3 7.9
8.0
Embodied Carbon, kg CO2/kg material 1.5
5.9
Embodied Energy, MJ/kg 20
81
Embodied Water, L/kg 49
210

Common Calculations

PREN (Pitting Resistance) 2.2
48
Resilience: Ultimate (Unit Rupture Work), MJ/m3 120
210
Resilience: Unit (Modulus of Resilience), kJ/m3 250
240
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 24
25
Strength to Weight: Axial, points 20
22
Strength to Weight: Bending, points 19
21
Thermal Diffusivity, mm2/s 13
3.3
Thermal Shock Resistance, points 16
14

Alloy Composition

Carbon (C), % 0 to 0.25
0 to 0.035
Chromium (Cr), % 0.4 to 0.7
22 to 24
Copper (Cu), % 0
0 to 0.4
Iron (Fe), % 97.1 to 99.2
43.4 to 51.8
Manganese (Mn), % 0 to 0.7
0 to 2.0
Molybdenum (Mo), % 0.4 to 0.6
6.0 to 6.8
Nickel (Ni), % 0
20 to 22
Nitrogen (N), % 0
0.21 to 0.32
Phosphorus (P), % 0 to 0.035
0 to 0.035
Silicon (Si), % 0 to 0.6
0 to 1.0
Sulfur (S), % 0 to 0.030
0 to 0.020