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ASTM Grade HN Steel vs. AWS E309LMo

Both ASTM grade HN steel and AWS E309LMo are iron alloys. They have 87% of their average alloy composition in common. There are 23 material properties with values for both materials. Properties with values for just one material (5, in this case) are not shown.

For each property being compared, the top bar is ASTM grade HN steel and the bottom bar is AWS E309LMo.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 9.0
34
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 77
79
Tensile Strength: Ultimate (UTS), MPa 500
580

Thermal Properties

Latent Heat of Fusion, J/g 310
300
Melting Completion (Liquidus), °C 1400
1430
Melting Onset (Solidus), °C 1350
1390
Specific Heat Capacity, J/kg-K 480
480
Thermal Conductivity, W/m-K 13
15
Thermal Expansion, µm/m-K 16
14

Otherwise Unclassified Properties

Base Metal Price, % relative 26
22
Density, g/cm3 7.9
7.9
Embodied Carbon, kg CO2/kg material 4.6
4.2
Embodied Energy, MJ/kg 66
59
Embodied Water, L/kg 180
180

Common Calculations

PREN (Pitting Resistance) 22
32
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 17
21
Strength to Weight: Bending, points 18
20
Thermal Diffusivity, mm2/s 3.5
3.9
Thermal Shock Resistance, points 11
15

Alloy Composition

Carbon (C), % 0.2 to 0.5
0 to 0.040
Chromium (Cr), % 19 to 23
22 to 25
Copper (Cu), % 0
0 to 0.75
Iron (Fe), % 44.9 to 57.8
53.6 to 63.5
Manganese (Mn), % 0 to 2.0
0.5 to 2.5
Molybdenum (Mo), % 0 to 0.5
2.0 to 3.0
Nickel (Ni), % 23 to 27
12 to 14
Phosphorus (P), % 0 to 0.040
0 to 0.040
Silicon (Si), % 0 to 2.0
0 to 1.0
Sulfur (S), % 0 to 0.040
0 to 0.030