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ASTM A225 Steel vs. ACI-ASTM CK35MN Steel

Both ASTM A225 steel and ACI-ASTM CK35MN steel are iron alloys. There are 30 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 ASTM A225 steel and the bottom bar is ACI-ASTM CK35MN steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 190 to 250
190
Elastic (Young's, Tensile) Modulus, GPa 190
210
Elongation at Break, % 21 to 23
40
Fatigue Strength, MPa 330 to 390
270
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 73
81
Tensile Strength: Ultimate (UTS), MPa 620 to 830
650
Tensile Strength: Yield (Proof), MPa 460 to 550
310

Thermal Properties

Latent Heat of Fusion, J/g 250
310
Maximum Temperature: Mechanical, °C 400
1100
Melting Completion (Liquidus), °C 1460
1460
Melting Onset (Solidus), °C 1420
1410
Specific Heat Capacity, J/kg-K 470
470
Thermal Conductivity, W/m-K 52
12
Thermal Expansion, µm/m-K 13
16

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.3
1.9
Electrical Conductivity: Equal Weight (Specific), % IACS 8.4
2.1

Otherwise Unclassified Properties

Base Metal Price, % relative 2.3
31
Density, g/cm3 7.8
8.0
Embodied Carbon, kg CO2/kg material 1.8
5.9
Embodied Energy, MJ/kg 24 to 25
81
Embodied Water, L/kg 48
210

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 120 to 170
210
Resilience: Unit (Modulus of Resilience), kJ/m3 580 to 820
240
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 24
25
Strength to Weight: Axial, points 22 to 29
22
Strength to Weight: Bending, points 21 to 25
21
Thermal Diffusivity, mm2/s 14
3.3
Thermal Shock Resistance, points 18 to 24
14