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ASTM Grade HP Steel vs. ACI-ASTM CF3MN Steel

Both ASTM grade HP steel and ACI-ASTM CF3MN steel are iron alloys. They have 68% of their average alloy composition in common. There are 30 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 grade HP steel and the bottom bar is ACI-ASTM CF3MN steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 140
170
Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 5.1
39
Fatigue Strength, MPa 130
250
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 78
78
Tensile Strength: Ultimate (UTS), MPa 490
580
Tensile Strength: Yield (Proof), MPa 260
290

Thermal Properties

Latent Heat of Fusion, J/g 320
300
Maximum Temperature: Corrosion, °C 440
420
Maximum Temperature: Mechanical, °C 1100
1010
Melting Completion (Liquidus), °C 1370
1440
Melting Onset (Solidus), °C 1330
1390
Specific Heat Capacity, J/kg-K 480
480
Thermal Conductivity, W/m-K 12
15
Thermal Expansion, µm/m-K 16
16

Otherwise Unclassified Properties

Base Metal Price, % relative 34
19
Density, g/cm3 7.9
7.8
Embodied Carbon, kg CO2/kg material 5.8
3.9
Embodied Energy, MJ/kg 82
53
Embodied Water, L/kg 220
160

Common Calculations

PREN (Pitting Resistance) 27
30
Resilience: Ultimate (Unit Rupture Work), MJ/m3 21
190
Resilience: Unit (Modulus of Resilience), kJ/m3 170
210
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 17
20
Strength to Weight: Bending, points 17
20
Thermal Diffusivity, mm2/s 3.2
4.1
Thermal Shock Resistance, points 11
13

Alloy Composition

Carbon (C), % 0.35 to 0.75
0 to 0.030
Chromium (Cr), % 24 to 28
17 to 22
Iron (Fe), % 29.2 to 42.7
58.7 to 71.9
Manganese (Mn), % 0 to 2.0
0 to 1.5
Molybdenum (Mo), % 0 to 0.5
2.0 to 3.0
Nickel (Ni), % 33 to 37
9.0 to 13
Nitrogen (N), % 0
0.1 to 0.2
Phosphorus (P), % 0 to 0.040
0 to 0.040
Silicon (Si), % 0 to 2.5
0 to 1.5
Sulfur (S), % 0 to 0.040
0 to 0.040