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ASTM Grade 65-45-12 vs. Hot Rolled SAE-AISI 1018

Both ASTM grade 65-45-12 and hot rolled SAE-AISI 1018 are iron alloys. They have a moderately high 95% 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 65-45-12 and the bottom bar is hot rolled SAE-AISI 1018.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 180
130
Elastic (Young's, Tensile) Modulus, GPa 170
190
Elongation at Break, % 13
27
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 65
73
Shear Strength, MPa 440
280
Tensile Strength: Ultimate (UTS), MPa 490
430
Tensile Strength: Yield (Proof), MPa 340
240

Thermal Properties

Latent Heat of Fusion, J/g 270
250
Maximum Temperature: Mechanical, °C 290
400
Melting Completion (Liquidus), °C 1160
1460
Melting Onset (Solidus), °C 1120
1420
Specific Heat Capacity, J/kg-K 490
470
Thermal Conductivity, W/m-K 36
52
Thermal Expansion, µm/m-K 11
12

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.4
7.0
Electrical Conductivity: Equal Weight (Specific), % IACS 9.4
8.0

Otherwise Unclassified Properties

Base Metal Price, % relative 1.9
1.8
Density, g/cm3 7.1
7.9
Embodied Carbon, kg CO2/kg material 1.5
1.4
Embodied Energy, MJ/kg 21
18
Embodied Water, L/kg 43
46

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 59
100
Resilience: Unit (Modulus of Resilience), kJ/m3 340
150
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 26
24
Strength to Weight: Axial, points 19
15
Strength to Weight: Bending, points 19
16
Thermal Diffusivity, mm2/s 10
14
Thermal Shock Resistance, points 19
14

Alloy Composition

Carbon (C), % 3.0 to 3.5
0.15 to 0.2
Iron (Fe), % 93.7 to 95.5
98.8 to 99.25
Manganese (Mn), % 0
0.6 to 0.9
Phosphorus (P), % 0 to 0.080
0 to 0.040
Silicon (Si), % 1.5 to 2.8
0
Sulfur (S), % 0
0 to 0.050