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SAE-AISI 1074 Steel vs. ASTM A372 Grade K Steel

Both SAE-AISI 1074 steel and ASTM A372 grade K steel are iron alloys. They have a very high 95% of their average alloy composition in common. There are 31 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 SAE-AISI 1074 steel and the bottom bar is ASTM A372 grade K steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 220 to 250
230
Elastic (Young's, Tensile) Modulus, GPa 190
190
Elongation at Break, % 11 to 14
23
Fatigue Strength, MPa 290 to 350
440
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 72
73
Shear Strength, MPa 440 to 490
490
Tensile Strength: Ultimate (UTS), MPa 740 to 820
780
Tensile Strength: Yield (Proof), MPa 450 to 570
620

Thermal Properties

Latent Heat of Fusion, J/g 250
250
Maximum Temperature: Mechanical, °C 400
440
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 50
48
Thermal Expansion, µm/m-K 12
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.1
7.8
Electrical Conductivity: Equal Weight (Specific), % IACS 8.1
8.9

Otherwise Unclassified Properties

Base Metal Price, % relative 1.8
4.4
Density, g/cm3 7.8
7.9
Embodied Carbon, kg CO2/kg material 1.4
1.8
Embodied Energy, MJ/kg 19
24
Embodied Water, L/kg 46
57

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 77 to 94
160
Resilience: Unit (Modulus of Resilience), kJ/m3 550 to 860
1010
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 24
24
Strength to Weight: Axial, points 26 to 29
27
Strength to Weight: Bending, points 23 to 25
24
Thermal Diffusivity, mm2/s 14
13
Thermal Shock Resistance, points 24 to 26
23

Alloy Composition

Carbon (C), % 0.7 to 0.8
0 to 0.18
Chromium (Cr), % 0
1.0 to 1.8
Iron (Fe), % 98.3 to 98.8
93.4 to 96.6
Manganese (Mn), % 0.5 to 0.8
0.1 to 0.4
Molybdenum (Mo), % 0
0.2 to 0.6
Nickel (Ni), % 0
2.0 to 3.3
Phosphorus (P), % 0 to 0.040
0 to 0.015
Silicon (Si), % 0
0.15 to 0.35
Sulfur (S), % 0 to 0.050
0 to 0.010