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ASTM Grade HN Steel vs. AISI 205 Stainless Steel

Both ASTM grade HN steel and AISI 205 stainless steel are iron alloys. They have 72% of their average alloy composition in common. There are 24 material properties with values for both materials. Properties with values for just one material (7, in this case) are not shown.

For each property being compared, the top bar is ASTM grade HN steel and the bottom bar is AISI 205 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 140
210 to 440
Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 9.0
11 to 51
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 77
77
Tensile Strength: Ultimate (UTS), MPa 500
800 to 1430

Thermal Properties

Latent Heat of Fusion, J/g 310
280
Maximum Temperature: Corrosion, °C 420
410
Maximum Temperature: Mechanical, °C 1080
880
Melting Completion (Liquidus), °C 1400
1380
Melting Onset (Solidus), °C 1350
1340
Specific Heat Capacity, J/kg-K 480
480
Thermal Expansion, µm/m-K 16
18

Otherwise Unclassified Properties

Base Metal Price, % relative 26
11
Density, g/cm3 7.9
7.6
Embodied Carbon, kg CO2/kg material 4.6
2.6
Embodied Energy, MJ/kg 66
37
Embodied Water, L/kg 180
150

Common Calculations

PREN (Pitting Resistance) 22
23
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
26
Strength to Weight: Axial, points 17
29 to 52
Strength to Weight: Bending, points 18
25 to 37
Thermal Shock Resistance, points 11
16 to 29

Alloy Composition

Carbon (C), % 0.2 to 0.5
0.12 to 0.25
Chromium (Cr), % 19 to 23
16.5 to 18.5
Iron (Fe), % 44.9 to 57.8
62.6 to 68.1
Manganese (Mn), % 0 to 2.0
14 to 15.5
Molybdenum (Mo), % 0 to 0.5
0
Nickel (Ni), % 23 to 27
1.0 to 1.7
Nitrogen (N), % 0
0.32 to 0.4
Phosphorus (P), % 0 to 0.040
0 to 0.060
Silicon (Si), % 0 to 2.0
0 to 1.0
Sulfur (S), % 0 to 0.040
0 to 0.030