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ASTM A372 Grade H Steel vs. SAE-AISI 1090 Steel

Both ASTM A372 grade H steel and SAE-AISI 1090 steel are iron alloys. They have a very high 99% of their average alloy composition in common. There are 31 material properties with values for both materials. Properties with values for just one material (1, in this case) are not shown.

For each property being compared, the top bar is ASTM A372 grade H steel and the bottom bar is SAE-AISI 1090 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 200 to 280
220 to 280
Elastic (Young's, Tensile) Modulus, GPa 190
190
Elongation at Break, % 20 to 22
11
Fatigue Strength, MPa 310 to 380
320 to 380
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 73
72
Shear Strength, MPa 410 to 570
470 to 570
Tensile Strength: Ultimate (UTS), MPa 650 to 910
790 to 950
Tensile Strength: Yield (Proof), MPa 430 to 550
520 to 610

Thermal Properties

Latent Heat of Fusion, J/g 250
240
Maximum Temperature: Mechanical, °C 410
400
Melting Completion (Liquidus), °C 1460
1450
Melting Onset (Solidus), °C 1420
1410
Specific Heat Capacity, J/kg-K 470
470
Thermal Conductivity, W/m-K 45
50
Thermal Expansion, µm/m-K 13
12

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.2
7.1
Electrical Conductivity: Equal Weight (Specific), % IACS 8.3
8.2

Otherwise Unclassified Properties

Base Metal Price, % relative 2.3
1.8
Density, g/cm3 7.8
7.8
Embodied Carbon, kg CO2/kg material 1.5
1.4
Embodied Energy, MJ/kg 20
19
Embodied Water, L/kg 49
46

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 130 to 160
82 to 91
Resilience: Unit (Modulus of Resilience), kJ/m3 500 to 810
730 to 1000
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 24
24
Strength to Weight: Axial, points 23 to 32
28 to 34
Strength to Weight: Bending, points 21 to 27
24 to 27
Thermal Diffusivity, mm2/s 12
13
Thermal Shock Resistance, points 19 to 27
25 to 31

Alloy Composition

Carbon (C), % 0.3 to 0.4
0.85 to 1.0
Chromium (Cr), % 0.4 to 0.65
0
Iron (Fe), % 97.3 to 98.3
98 to 98.6
Manganese (Mn), % 0.75 to 1.1
0.6 to 0.9
Molybdenum (Mo), % 0.15 to 0.25
0
Phosphorus (P), % 0 to 0.015
0 to 0.040
Silicon (Si), % 0.15 to 0.35
0
Sulfur (S), % 0 to 0.010
0 to 0.050

Comparable Variants