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EN 1.4123 Stainless Steel vs. ASTM Grade HI Steel

Both EN 1.4123 stainless steel and ASTM grade HI steel are iron alloys. They have 70% of their average alloy composition in common. There are 27 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 EN 1.4123 stainless steel and the bottom bar is ASTM grade HI steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 220 to 250
160
Elastic (Young's, Tensile) Modulus, GPa 200
200
Poisson's Ratio 0.28
0.27
Shear Modulus, GPa 77
79
Tensile Strength: Ultimate (UTS), MPa 720 to 810
550

Thermal Properties

Latent Heat of Fusion, J/g 280
310
Maximum Temperature: Corrosion, °C 390
450
Maximum Temperature: Mechanical, °C 840
1100
Melting Completion (Liquidus), °C 1450
1400
Melting Onset (Solidus), °C 1410
1350
Specific Heat Capacity, J/kg-K 480
490
Thermal Conductivity, W/m-K 23
15
Thermal Expansion, µm/m-K 10
17

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.4
2.1
Electrical Conductivity: Equal Weight (Specific), % IACS 2.8
2.4

Otherwise Unclassified Properties

Base Metal Price, % relative 10
23
Density, g/cm3 7.7
7.8
Embodied Carbon, kg CO2/kg material 4.2
4.1
Embodied Energy, MJ/kg 62
59
Embodied Water, L/kg 120
200

Common Calculations

PREN (Pitting Resistance) 24
29
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 26 to 29
20
Strength to Weight: Bending, points 23 to 25
19
Thermal Diffusivity, mm2/s 6.3
3.9
Thermal Shock Resistance, points 26 to 29
12

Alloy Composition

Carbon (C), % 0.35 to 0.5
0.2 to 0.5
Chromium (Cr), % 14 to 16.5
26 to 30
Iron (Fe), % 76.7 to 84.6
46.9 to 59.8
Manganese (Mn), % 0 to 1.0
0 to 2.0
Molybdenum (Mo), % 1.0 to 2.5
0 to 0.5
Nickel (Ni), % 0 to 0.5
14 to 18
Nitrogen (N), % 0.1 to 0.3
0
Phosphorus (P), % 0 to 0.040
0 to 0.040
Silicon (Si), % 0 to 1.0
0 to 2.0
Sulfur (S), % 0 to 0.030
0 to 0.040
Vanadium (V), % 0 to 1.5
0