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ASTM A356 Grade 5 vs. ASTM Grade HI Steel

Both ASTM A356 grade 5 and ASTM grade HI steel are iron alloys. They have 55% 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 ASTM A356 grade 5 and the bottom bar is ASTM grade HI steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 170
160
Elastic (Young's, Tensile) Modulus, GPa 190
200
Elongation at Break, % 25
11
Fatigue Strength, MPa 230
150
Poisson's Ratio 0.29
0.27
Shear Modulus, GPa 73
79
Tensile Strength: Ultimate (UTS), MPa 550
550
Tensile Strength: Yield (Proof), MPa 310
270

Thermal Properties

Latent Heat of Fusion, J/g 250
310
Maximum Temperature: Mechanical, °C 420
1100
Melting Completion (Liquidus), °C 1470
1400
Melting Onset (Solidus), °C 1420
1350
Specific Heat Capacity, J/kg-K 470
490
Thermal Conductivity, W/m-K 49
15
Thermal Expansion, µm/m-K 13
17

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.2
2.1
Electrical Conductivity: Equal Weight (Specific), % IACS 8.3
2.4

Otherwise Unclassified Properties

Base Metal Price, % relative 2.6
23
Density, g/cm3 7.9
7.8
Embodied Carbon, kg CO2/kg material 1.5
4.1
Embodied Energy, MJ/kg 20
59
Embodied Water, L/kg 49
200

Common Calculations

PREN (Pitting Resistance) 2.2
29
Resilience: Ultimate (Unit Rupture Work), MJ/m3 120
52
Resilience: Unit (Modulus of Resilience), kJ/m3 250
180
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 24
25
Strength to Weight: Axial, points 20
20
Strength to Weight: Bending, points 19
19
Thermal Diffusivity, mm2/s 13
3.9
Thermal Shock Resistance, points 16
12

Alloy Composition

Carbon (C), % 0 to 0.25
0.2 to 0.5
Chromium (Cr), % 0.4 to 0.7
26 to 30
Iron (Fe), % 97.1 to 99.2
46.9 to 59.8
Manganese (Mn), % 0 to 0.7
0 to 2.0
Molybdenum (Mo), % 0.4 to 0.6
0 to 0.5
Nickel (Ni), % 0
14 to 18
Phosphorus (P), % 0 to 0.035
0 to 0.040
Silicon (Si), % 0 to 0.6
0 to 2.0
Sulfur (S), % 0 to 0.030
0 to 0.040