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ASTM Grade HI Steel vs. ASTM A225 Steel

Both ASTM grade HI steel and ASTM A225 steel are iron alloys. 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 HI steel and the bottom bar is ASTM A225 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 160
190 to 250
Elastic (Young's, Tensile) Modulus, GPa 200
190
Elongation at Break, % 11
21 to 23
Fatigue Strength, MPa 150
330 to 390
Poisson's Ratio 0.27
0.29
Shear Modulus, GPa 79
73
Tensile Strength: Ultimate (UTS), MPa 550
620 to 830
Tensile Strength: Yield (Proof), MPa 270
460 to 550

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
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.1
7.3
Electrical Conductivity: Equal Weight (Specific), % IACS 2.4
8.4

Otherwise Unclassified Properties

Base Metal Price, % relative 23
2.3
Density, g/cm3 7.8
7.8
Embodied Carbon, kg CO2/kg material 4.1
1.8
Embodied Energy, MJ/kg 59
24 to 25
Embodied Water, L/kg 200
48

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 52
120 to 170
Resilience: Unit (Modulus of Resilience), kJ/m3 180
580 to 820
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 25
24
Strength to Weight: Axial, points 20
22 to 29
Strength to Weight: Bending, points 19
21 to 25
Thermal Diffusivity, mm2/s 3.9
14
Thermal Shock Resistance, points 12
18 to 24