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SAE-AISI 1141 Steel vs. ASTM A372 Grade D Steel

Both SAE-AISI 1141 steel and ASTM A372 grade D steel are iron alloys. Their average alloy composition is basically identical. 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 SAE-AISI 1141 steel and the bottom bar is ASTM A372 grade D steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 210 to 220
250
Elastic (Young's, Tensile) Modulus, GPa 190
190
Elongation at Break, % 11 to 17
17
Fatigue Strength, MPa 270 to 430
340
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 72
73
Shear Strength, MPa 460 to 480
500
Tensile Strength: Ultimate (UTS), MPa 740 to 810
810
Tensile Strength: Yield (Proof), MPa 400 to 700
510

Thermal Properties

Latent Heat of Fusion, J/g 250
250
Maximum Temperature: Mechanical, °C 400
400
Melting Completion (Liquidus), °C 1460
1460
Melting Onset (Solidus), °C 1420
1420
Specific Heat Capacity, J/kg-K 470
470
Thermal Conductivity, W/m-K 51
51
Thermal Expansion, µm/m-K 12
12

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 10
7.2
Electrical Conductivity: Equal Weight (Specific), % IACS 12
8.3

Otherwise Unclassified Properties

Base Metal Price, % relative 1.9
2.1
Density, g/cm3 7.8
7.8
Embodied Carbon, kg CO2/kg material 1.4
1.5
Embodied Energy, MJ/kg 19
20
Embodied Water, L/kg 47
48

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 86 to 110
120
Resilience: Unit (Modulus of Resilience), kJ/m3 430 to 1290
700
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 24
24
Strength to Weight: Axial, points 26 to 29
29
Strength to Weight: Bending, points 23 to 25
25
Thermal Diffusivity, mm2/s 14
14
Thermal Shock Resistance, points 24 to 26
26

Alloy Composition

Carbon (C), % 0.37 to 0.45
0.4 to 0.5
Iron (Fe), % 97.7 to 98.2
97.1 to 97.9
Manganese (Mn), % 1.4 to 1.7
1.4 to 1.8
Molybdenum (Mo), % 0
0.17 to 0.27
Phosphorus (P), % 0 to 0.040
0 to 0.015
Silicon (Si), % 0
0.15 to 0.35
Sulfur (S), % 0.080 to 0.13
0 to 0.010