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EN 1.4557 Stainless Steel vs. ASTM Grade HI Steel

Both EN 1.4557 stainless steel and ASTM grade HI steel are iron alloys. They have a moderately high 90% of their average alloy composition in common. There are 32 material properties with values for both materials. Properties with values for just one material (1, in this case) are not shown.

For each property being compared, the top bar is EN 1.4557 stainless steel and the bottom bar is ASTM grade HI steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 160
160
Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 40
11
Fatigue Strength, MPa 260
150
Poisson's Ratio 0.28
0.27
Shear Modulus, GPa 80
79
Tensile Strength: Ultimate (UTS), MPa 560
550
Tensile Strength: Yield (Proof), MPa 300
270

Thermal Properties

Latent Heat of Fusion, J/g 300
310
Maximum Temperature: Corrosion, °C 420
450
Maximum Temperature: Mechanical, °C 1090
1100
Melting Completion (Liquidus), °C 1460
1400
Melting Onset (Solidus), °C 1420
1350
Specific Heat Capacity, J/kg-K 460
490
Thermal Conductivity, W/m-K 15
15
Thermal Expansion, µm/m-K 17
17

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.0
2.1
Electrical Conductivity: Equal Weight (Specific), % IACS 2.2
2.4

Otherwise Unclassified Properties

Base Metal Price, % relative 29
23
Density, g/cm3 8.0
7.8
Embodied Carbon, kg CO2/kg material 5.6
4.1
Embodied Energy, MJ/kg 76
59
Embodied Water, L/kg 190
200

Common Calculations

PREN (Pitting Resistance) 45
29
Resilience: Ultimate (Unit Rupture Work), MJ/m3 190
52
Resilience: Unit (Modulus of Resilience), kJ/m3 210
180
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 24
25
Strength to Weight: Axial, points 19
20
Strength to Weight: Bending, points 19
19
Thermal Diffusivity, mm2/s 4.0
3.9
Thermal Shock Resistance, points 12
12

Alloy Composition

Carbon (C), % 0 to 0.020
0.2 to 0.5
Chromium (Cr), % 19.5 to 20.5
26 to 30
Copper (Cu), % 0.5 to 1.0
0
Iron (Fe), % 49.5 to 56.3
46.9 to 59.8
Manganese (Mn), % 0 to 1.2
0 to 2.0
Molybdenum (Mo), % 6.0 to 7.0
0 to 0.5
Nickel (Ni), % 17.5 to 19.5
14 to 18
Nitrogen (N), % 0.18 to 0.24
0
Phosphorus (P), % 0 to 0.030
0 to 0.040
Silicon (Si), % 0 to 1.0
0 to 2.0
Sulfur (S), % 0 to 0.010
0 to 0.040