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ASTM Grade HI Steel vs. SAE-AISI 1025 Steel

Both ASTM grade HI steel and SAE-AISI 1025 steel are iron alloys. They have 54% of their average alloy composition in common. There are 30 material properties with values for both materials. Properties with values for just one material (4, in this case) are not shown.

For each property being compared, the top bar is ASTM grade HI steel and the bottom bar is SAE-AISI 1025 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 160
130 to 140
Elastic (Young's, Tensile) Modulus, GPa 200
190
Elongation at Break, % 11
17 to 28
Fatigue Strength, MPa 150
190 to 280
Poisson's Ratio 0.27
0.29
Shear Modulus, GPa 79
73
Tensile Strength: Ultimate (UTS), MPa 550
450 to 500
Tensile Strength: Yield (Proof), MPa 270
250 to 420

Thermal Properties

Latent Heat of Fusion, J/g 310
250
Maximum Temperature: Mechanical, °C 1100
400
Melting Completion (Liquidus), °C 1400
1460
Melting Onset (Solidus), °C 1350
1420
Specific Heat Capacity, J/kg-K 490
470
Thermal Conductivity, W/m-K 15
52
Thermal Expansion, µm/m-K 17
12

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.1
6.9
Electrical Conductivity: Equal Weight (Specific), % IACS 2.4
8.0

Otherwise Unclassified Properties

Base Metal Price, % relative 23
1.8
Density, g/cm3 7.8
7.9
Embodied Carbon, kg CO2/kg material 4.1
1.4
Embodied Energy, MJ/kg 59
18
Embodied Water, L/kg 200
45

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 52
80 to 110
Resilience: Unit (Modulus of Resilience), kJ/m3 180
170 to 470
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 25
24
Strength to Weight: Axial, points 20
16 to 18
Strength to Weight: Bending, points 19
17 to 18
Thermal Diffusivity, mm2/s 3.9
14
Thermal Shock Resistance, points 12
14 to 16

Alloy Composition

Carbon (C), % 0.2 to 0.5
0.22 to 0.28
Chromium (Cr), % 26 to 30
0
Iron (Fe), % 46.9 to 59.8
99.03 to 99.48
Manganese (Mn), % 0 to 2.0
0.3 to 0.6
Molybdenum (Mo), % 0 to 0.5
0
Nickel (Ni), % 14 to 18
0
Phosphorus (P), % 0 to 0.040
0 to 0.040
Silicon (Si), % 0 to 2.0
0
Sulfur (S), % 0 to 0.040
0 to 0.050