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ACI-ASTM CK35MN Steel vs. ASTM Grade HE Steel

Both ACI-ASTM CK35MN steel and ASTM grade HE steel are iron alloys. They have 82% of their average alloy composition in common.

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

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 190
190
Elastic (Young's, Tensile) Modulus, GPa 210
200
Elongation at Break, % 40
10
Fatigue Strength, MPa 270
160
Poisson's Ratio 0.28
0.27
Shear Modulus, GPa 81
79
Tensile Strength: Ultimate (UTS), MPa 650
670
Tensile Strength: Yield (Proof), MPa 310
310

Thermal Properties

Latent Heat of Fusion, J/g 310
310
Maximum Temperature: Corrosion, °C 440
450
Maximum Temperature: Mechanical, °C 1100
1100
Melting Completion (Liquidus), °C 1460
1400
Melting Onset (Solidus), °C 1410
1360
Specific Heat Capacity, J/kg-K 470
490
Thermal Conductivity, W/m-K 12
14
Thermal Expansion, µm/m-K 16
17

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 1.9
2.1
Electrical Conductivity: Equal Weight (Specific), % IACS 2.1
2.5

Otherwise Unclassified Properties

Base Metal Price, % relative 31
19
Density, g/cm3 8.0
7.7
Embodied Carbon, kg CO2/kg material 5.9
3.5
Embodied Energy, MJ/kg 81
50
Embodied Water, L/kg 210
190

Common Calculations

PREN (Pitting Resistance) 48
29
Resilience: Ultimate (Unit Rupture Work), MJ/m3 210
56
Resilience: Unit (Modulus of Resilience), kJ/m3 240
240
Stiffness to Weight: Axial, points 14
15
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 22
24
Strength to Weight: Bending, points 21
22
Thermal Diffusivity, mm2/s 3.3
3.6
Thermal Shock Resistance, points 14
14

Alloy Composition

Carbon (C), % 0 to 0.035
0.2 to 0.5
Chromium (Cr), % 22 to 24
26 to 30
Copper (Cu), % 0 to 0.4
0
Iron (Fe), % 43.4 to 51.8
53.9 to 65.8
Manganese (Mn), % 0 to 2.0
0 to 2.0
Molybdenum (Mo), % 6.0 to 6.8
0 to 0.5
Nickel (Ni), % 20 to 22
8.0 to 11
Nitrogen (N), % 0.21 to 0.32
0
Phosphorus (P), % 0 to 0.035
0 to 0.040
Silicon (Si), % 0 to 1.0
0 to 2.0
Sulfur (S), % 0 to 0.020
0 to 0.040