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EN 1.4028 Stainless Steel vs. ASTM Grade HN Steel

Both EN 1.4028 stainless steel and ASTM grade HN steel are iron alloys. They have 66% of their average alloy composition in common. There are 25 material properties with values for both materials. Properties with values for just one material (8, in this case) are not shown.

For each property being compared, the top bar is EN 1.4028 stainless steel and the bottom bar is ASTM grade HN steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
200
Elongation at Break, % 11 to 17
9.0
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 76
77
Tensile Strength: Ultimate (UTS), MPa 660 to 930
500

Thermal Properties

Latent Heat of Fusion, J/g 270
310
Maximum Temperature: Corrosion, °C 390
420
Maximum Temperature: Mechanical, °C 760
1080
Melting Completion (Liquidus), °C 1440
1400
Melting Onset (Solidus), °C 1400
1350
Specific Heat Capacity, J/kg-K 480
480
Thermal Conductivity, W/m-K 30
13
Thermal Expansion, µm/m-K 11
16

Otherwise Unclassified Properties

Base Metal Price, % relative 7.0
26
Density, g/cm3 7.7
7.9
Embodied Carbon, kg CO2/kg material 1.9
4.6
Embodied Energy, MJ/kg 27
66
Embodied Water, L/kg 100
180

Common Calculations

PREN (Pitting Resistance) 13
22
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 24 to 33
17
Strength to Weight: Bending, points 22 to 27
18
Thermal Diffusivity, mm2/s 8.1
3.5
Thermal Shock Resistance, points 23 to 32
11

Alloy Composition

Carbon (C), % 0.26 to 0.35
0.2 to 0.5
Chromium (Cr), % 12 to 14
19 to 23
Iron (Fe), % 83.1 to 87.7
44.9 to 57.8
Manganese (Mn), % 0 to 1.5
0 to 2.0
Molybdenum (Mo), % 0
0 to 0.5
Nickel (Ni), % 0
23 to 27
Phosphorus (P), % 0 to 0.040
0 to 0.040
Silicon (Si), % 0 to 1.0
0 to 2.0
Sulfur (S), % 0 to 0.015
0 to 0.040