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ASTM Grade HP Steel vs. ACI-ASTM CA6NM Steel

Both ASTM grade HP steel and ACI-ASTM CA6NM steel are iron alloys. They have 54% of their average alloy composition in common. 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 grade HP steel and the bottom bar is ACI-ASTM CA6NM steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 140
250
Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 5.1
17
Fatigue Strength, MPa 130
380
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 78
76
Tensile Strength: Ultimate (UTS), MPa 490
850
Tensile Strength: Yield (Proof), MPa 260
620

Thermal Properties

Latent Heat of Fusion, J/g 320
280
Maximum Temperature: Corrosion, °C 440
390
Maximum Temperature: Mechanical, °C 1100
770
Melting Completion (Liquidus), °C 1370
1450
Melting Onset (Solidus), °C 1330
1400
Specific Heat Capacity, J/kg-K 480
480
Thermal Conductivity, W/m-K 12
25
Thermal Expansion, µm/m-K 16
10

Otherwise Unclassified Properties

Base Metal Price, % relative 34
10
Density, g/cm3 7.9
7.8
Embodied Carbon, kg CO2/kg material 5.8
2.5
Embodied Energy, MJ/kg 82
34
Embodied Water, L/kg 220
110

Common Calculations

PREN (Pitting Resistance) 27
15
Resilience: Ultimate (Unit Rupture Work), MJ/m3 21
130
Resilience: Unit (Modulus of Resilience), kJ/m3 170
1000
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 17
30
Strength to Weight: Bending, points 17
26
Thermal Diffusivity, mm2/s 3.2
6.7
Thermal Shock Resistance, points 11
31

Alloy Composition

Carbon (C), % 0.35 to 0.75
0 to 0.060
Chromium (Cr), % 24 to 28
11.5 to 14
Iron (Fe), % 29.2 to 42.7
78.4 to 84.6
Manganese (Mn), % 0 to 2.0
0 to 1.0
Molybdenum (Mo), % 0 to 0.5
0.4 to 1.0
Nickel (Ni), % 33 to 37
3.5 to 4.5
Phosphorus (P), % 0 to 0.040
0 to 0.040
Silicon (Si), % 0 to 2.5
0 to 1.0
Sulfur (S), % 0 to 0.040
0 to 0.030