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ASTM Grade HH Steel vs. EN 1.6368 Steel

Both ASTM grade HH steel and EN 1.6368 steel are iron alloys. They have 62% 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 HH steel and the bottom bar is EN 1.6368 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 170
200 to 210
Elastic (Young's, Tensile) Modulus, GPa 200
190
Elongation at Break, % 11
18
Fatigue Strength, MPa 150
310 to 330
Poisson's Ratio 0.27
0.29
Shear Modulus, GPa 79
73
Tensile Strength: Ultimate (UTS), MPa 580
660 to 690
Tensile Strength: Yield (Proof), MPa 270
460 to 490

Thermal Properties

Latent Heat of Fusion, J/g 310
250
Maximum Temperature: Mechanical, °C 1100
410
Melting Completion (Liquidus), °C 1400
1460
Melting Onset (Solidus), °C 1360
1420
Specific Heat Capacity, J/kg-K 480
470
Thermal Conductivity, W/m-K 14
40
Thermal Expansion, µm/m-K 17
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.1
7.5
Electrical Conductivity: Equal Weight (Specific), % IACS 2.4
8.6

Otherwise Unclassified Properties

Base Metal Price, % relative 20
3.4
Density, g/cm3 7.7
7.9
Embodied Carbon, kg CO2/kg material 3.7
1.7
Embodied Energy, MJ/kg 53
22
Embodied Water, L/kg 180
53

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 53
110
Resilience: Unit (Modulus of Resilience), kJ/m3 190
580 to 650
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 25
24
Strength to Weight: Axial, points 21
23 to 24
Strength to Weight: Bending, points 20
21 to 22
Thermal Diffusivity, mm2/s 3.8
11
Thermal Shock Resistance, points 12
20

Alloy Composition

Aluminum (Al), % 0
0.015 to 0.040
Carbon (C), % 0.2 to 0.5
0 to 0.17
Chromium (Cr), % 24 to 28
0 to 0.3
Copper (Cu), % 0
0.5 to 0.8
Iron (Fe), % 52.9 to 64.8
95.1 to 97.2
Manganese (Mn), % 0 to 2.0
0.8 to 1.2
Molybdenum (Mo), % 0 to 0.5
0.25 to 0.5
Nickel (Ni), % 11 to 14
1.0 to 1.3
Niobium (Nb), % 0
0.015 to 0.045
Nitrogen (N), % 0
0 to 0.020
Phosphorus (P), % 0 to 0.040
0 to 0.025
Silicon (Si), % 0 to 2.0
0.25 to 0.5
Sulfur (S), % 0 to 0.040
0 to 0.010