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ACI-ASTM CA6NM Steel vs. ASTM A372 Grade H Steel

Both ACI-ASTM CA6NM steel and ASTM A372 grade H steel are iron alloys. They have 83% of their average alloy composition in common. There are 30 material properties with values for both materials. Properties with values for just one material (4, in this case) are not shown.

For each property being compared, the top bar is ACI-ASTM CA6NM steel and the bottom bar is ASTM A372 grade H steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 250
200 to 280
Elastic (Young's, Tensile) Modulus, GPa 200
190
Elongation at Break, % 17
20 to 22
Fatigue Strength, MPa 380
310 to 380
Poisson's Ratio 0.28
0.29
Shear Modulus, GPa 76
73
Tensile Strength: Ultimate (UTS), MPa 850
650 to 910
Tensile Strength: Yield (Proof), MPa 620
430 to 550

Thermal Properties

Latent Heat of Fusion, J/g 280
250
Maximum Temperature: Mechanical, °C 770
410
Melting Completion (Liquidus), °C 1450
1460
Melting Onset (Solidus), °C 1400
1420
Specific Heat Capacity, J/kg-K 480
470
Thermal Conductivity, W/m-K 25
45
Thermal Expansion, µm/m-K 10
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.8
7.2
Electrical Conductivity: Equal Weight (Specific), % IACS 3.2
8.3

Otherwise Unclassified Properties

Base Metal Price, % relative 10
2.3
Density, g/cm3 7.8
7.8
Embodied Carbon, kg CO2/kg material 2.5
1.5
Embodied Energy, MJ/kg 34
20
Embodied Water, L/kg 110
49

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 130
130 to 160
Resilience: Unit (Modulus of Resilience), kJ/m3 1000
500 to 810
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 25
24
Strength to Weight: Axial, points 30
23 to 32
Strength to Weight: Bending, points 26
21 to 27
Thermal Diffusivity, mm2/s 6.7
12
Thermal Shock Resistance, points 31
19 to 27

Alloy Composition

Carbon (C), % 0 to 0.060
0.3 to 0.4
Chromium (Cr), % 11.5 to 14
0.4 to 0.65
Iron (Fe), % 78.4 to 84.6
97.3 to 98.3
Manganese (Mn), % 0 to 1.0
0.75 to 1.1
Molybdenum (Mo), % 0.4 to 1.0
0.15 to 0.25
Nickel (Ni), % 3.5 to 4.5
0
Phosphorus (P), % 0 to 0.040
0 to 0.015
Silicon (Si), % 0 to 1.0
0.15 to 0.35
Sulfur (S), % 0 to 0.030
0 to 0.010