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ASTM Grade HT Steel vs. ASTM A203 Steel

Both ASTM grade HT steel and ASTM A203 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 HT steel and the bottom bar is ASTM A203 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 150
160 to 180
Elastic (Young's, Tensile) Modulus, GPa 190
190
Elongation at Break, % 4.6
22 to 26
Fatigue Strength, MPa 130
210 to 280
Poisson's Ratio 0.28
0.29
Shear Modulus, GPa 76
73
Tensile Strength: Ultimate (UTS), MPa 500
520 to 590
Tensile Strength: Yield (Proof), MPa 270
290 to 390

Thermal Properties

Latent Heat of Fusion, J/g 310
250
Maximum Temperature: Mechanical, °C 1010
410
Melting Completion (Liquidus), °C 1390
1460
Melting Onset (Solidus), °C 1340
1420
Specific Heat Capacity, J/kg-K 480
470
Thermal Conductivity, W/m-K 12
52
Thermal Expansion, µm/m-K 15
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 1.7
7.4 to 7.6
Electrical Conductivity: Equal Weight (Specific), % IACS 1.9
8.5 to 8.7

Otherwise Unclassified Properties

Base Metal Price, % relative 31
3.2 to 4.0
Density, g/cm3 8.0
7.9
Embodied Carbon, kg CO2/kg material 5.4
1.6 to 1.7
Embodied Energy, MJ/kg 76
21 to 23
Embodied Water, L/kg 190
50 to 52

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 19
110 to 120
Resilience: Unit (Modulus of Resilience), kJ/m3 180
230 to 410
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 24
24
Strength to Weight: Axial, points 18
18 to 21
Strength to Weight: Bending, points 18
18 to 20
Thermal Diffusivity, mm2/s 3.2
14
Thermal Shock Resistance, points 12
15 to 17