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ASTM Grade HN Steel vs. EN 1.7779 Steel

Both ASTM grade HN steel and EN 1.7779 steel are iron alloys. They have 56% of their average alloy composition in common. There are 25 material properties with values for both materials. Properties with values for just one material (9, in this case) are not shown.

For each property being compared, the top bar is ASTM grade HN steel and the bottom bar is EN 1.7779 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 140
240
Elastic (Young's, Tensile) Modulus, GPa 200
190
Elongation at Break, % 9.0
16
Poisson's Ratio 0.28
0.29
Shear Modulus, GPa 77
73
Tensile Strength: Ultimate (UTS), MPa 500
810

Thermal Properties

Latent Heat of Fusion, J/g 310
260
Maximum Temperature: Mechanical, °C 1080
470
Melting Completion (Liquidus), °C 1400
1460
Melting Onset (Solidus), °C 1350
1420
Specific Heat Capacity, J/kg-K 480
470
Thermal Conductivity, W/m-K 13
39
Thermal Expansion, µm/m-K 16
13

Otherwise Unclassified Properties

Base Metal Price, % relative 26
4.0
Density, g/cm3 7.9
7.8
Embodied Carbon, kg CO2/kg material 4.6
2.8
Embodied Energy, MJ/kg 66
41
Embodied Water, L/kg 180
64

Common Calculations

PREN (Pitting Resistance) 22
5.0
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 25
24
Strength to Weight: Axial, points 17
29
Strength to Weight: Bending, points 18
25
Thermal Diffusivity, mm2/s 3.5
11
Thermal Shock Resistance, points 11
23

Alloy Composition

Aluminum (Al), % 0
0 to 0.040
Carbon (C), % 0.2 to 0.5
0.17 to 0.23
Chromium (Cr), % 19 to 23
3.0 to 3.3
Copper (Cu), % 0
0 to 0.3
Iron (Fe), % 44.9 to 57.8
93.8 to 95.4
Manganese (Mn), % 0 to 2.0
0.3 to 0.5
Molybdenum (Mo), % 0 to 0.5
0.5 to 0.6
Nickel (Ni), % 23 to 27
0 to 0.3
Phosphorus (P), % 0 to 0.040
0 to 0.025
Silicon (Si), % 0 to 2.0
0.15 to 0.35
Sulfur (S), % 0 to 0.040
0 to 0.010
Vanadium (V), % 0
0.45 to 0.55