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ASTM Grade HN Steel vs. AWS E312

Both ASTM grade HN steel and AWS E312 are iron alloys. They have 83% of their average alloy composition in common. There are 21 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 E312.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 9.0
25
Poisson's Ratio 0.28
0.27
Shear Modulus, GPa 77
80
Tensile Strength: Ultimate (UTS), MPa 500
740

Thermal Properties

Latent Heat of Fusion, J/g 310
310
Melting Completion (Liquidus), °C 1400
1410
Melting Onset (Solidus), °C 1350
1360
Specific Heat Capacity, J/kg-K 480
480
Thermal Expansion, µm/m-K 16
15

Otherwise Unclassified Properties

Base Metal Price, % relative 26
20
Density, g/cm3 7.9
7.7
Embodied Carbon, kg CO2/kg material 4.6
3.6
Embodied Energy, MJ/kg 66
52
Embodied Water, L/kg 180
200

Common Calculations

PREN (Pitting Resistance) 22
31
Stiffness to Weight: Axial, points 14
15
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 17
27
Strength to Weight: Bending, points 18
24
Thermal Shock Resistance, points 11
18

Alloy Composition

Carbon (C), % 0.2 to 0.5
0 to 0.15
Chromium (Cr), % 19 to 23
28 to 32
Copper (Cu), % 0
0 to 0.75
Iron (Fe), % 44.9 to 57.8
52.3 to 63.5
Manganese (Mn), % 0 to 2.0
0.5 to 2.5
Molybdenum (Mo), % 0 to 0.5
0 to 0.75
Nickel (Ni), % 23 to 27
8.0 to 10.5
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