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ASTM Grade HH Steel vs. ASTM A202 Steel

Both ASTM grade HH steel and ASTM A202 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 HH steel and the bottom bar is ASTM A202 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 170
180 to 200
Elastic (Young's, Tensile) Modulus, GPa 200
190
Elongation at Break, % 11
17 to 18
Fatigue Strength, MPa 150
240
Poisson's Ratio 0.27
0.29
Shear Modulus, GPa 79
73
Tensile Strength: Ultimate (UTS), MPa 580
590 to 670
Tensile Strength: Yield (Proof), MPa 270
350 to 360

Thermal Properties

Latent Heat of Fusion, J/g 310
260
Maximum Temperature: Mechanical, °C 1100
410
Melting Completion (Liquidus), °C 1400
1450
Melting Onset (Solidus), °C 1360
1410
Specific Heat Capacity, J/kg-K 480
470
Thermal Conductivity, W/m-K 14
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 20
2.1
Density, g/cm3 7.7
7.8
Embodied Carbon, kg CO2/kg material 3.7
1.4
Embodied Energy, MJ/kg 53
19
Embodied Water, L/kg 180
49

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 53
93 to 96
Resilience: Unit (Modulus of Resilience), kJ/m3 190
330 to 350
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 25
24
Strength to Weight: Axial, points 21
21 to 24
Strength to Weight: Bending, points 20
20 to 22
Thermal Diffusivity, mm2/s 3.8
14
Thermal Shock Resistance, points 12
17 to 20