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EN 1.4374 Stainless Steel vs. ASTM Grade HI Steel

Both EN 1.4374 stainless steel and ASTM grade HI steel are iron alloys. They have 79% of their average alloy composition in common. There are 32 material properties with values for both materials. Properties with values for just one material (2, in this case) are not shown.

For each property being compared, the top bar is EN 1.4374 stainless steel and the bottom bar is ASTM grade HI steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 230
160
Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 40
11
Fatigue Strength, MPa 340
150
Poisson's Ratio 0.28
0.27
Shear Modulus, GPa 77
79
Tensile Strength: Ultimate (UTS), MPa 800
550
Tensile Strength: Yield (Proof), MPa 400
270

Thermal Properties

Latent Heat of Fusion, J/g 290
310
Maximum Temperature: Corrosion, °C 410
450
Maximum Temperature: Mechanical, °C 920
1100
Melting Completion (Liquidus), °C 1400
1400
Melting Onset (Solidus), °C 1360
1350
Specific Heat Capacity, J/kg-K 480
490
Thermal Conductivity, W/m-K 15
15
Thermal Expansion, µm/m-K 17
17

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.4
2.1
Electrical Conductivity: Equal Weight (Specific), % IACS 2.9
2.4

Otherwise Unclassified Properties

Base Metal Price, % relative 14
23
Density, g/cm3 7.7
7.8
Embodied Carbon, kg CO2/kg material 2.9
4.1
Embodied Energy, MJ/kg 42
59
Embodied Water, L/kg 150
200

Common Calculations

PREN (Pitting Resistance) 23
29
Resilience: Ultimate (Unit Rupture Work), MJ/m3 270
52
Resilience: Unit (Modulus of Resilience), kJ/m3 400
180
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 29
20
Strength to Weight: Bending, points 25
19
Thermal Diffusivity, mm2/s 4.0
3.9
Thermal Shock Resistance, points 17
12

Alloy Composition

Carbon (C), % 0.050 to 0.1
0.2 to 0.5
Chromium (Cr), % 17.5 to 18.5
26 to 30
Copper (Cu), % 0 to 0.4
0
Iron (Fe), % 63.5 to 67.9
46.9 to 59.8
Manganese (Mn), % 9.0 to 10
0 to 2.0
Molybdenum (Mo), % 0 to 0.5
0 to 0.5
Nickel (Ni), % 5.0 to 6.0
14 to 18
Nitrogen (N), % 0.25 to 0.32
0
Phosphorus (P), % 0 to 0.035
0 to 0.040
Silicon (Si), % 0.3 to 0.6
0 to 2.0
Sulfur (S), % 0 to 0.030
0 to 0.040