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EN 1.4818 Stainless Steel vs. ASTM Grade HI Steel

Both EN 1.4818 stainless steel and ASTM grade HI steel are iron alloys. They have 84% 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 1.4818 stainless steel and the bottom bar is ASTM grade HI steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 180
160
Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 40
11
Fatigue Strength, MPa 280
150
Poisson's Ratio 0.28
0.27
Shear Modulus, GPa 77
79
Tensile Strength: Ultimate (UTS), MPa 700
550
Tensile Strength: Yield (Proof), MPa 330
270

Thermal Properties

Latent Heat of Fusion, J/g 300
310
Maximum Temperature: Corrosion, °C 420
450
Maximum Temperature: Mechanical, °C 1050
1100
Melting Completion (Liquidus), °C 1410
1400
Melting Onset (Solidus), °C 1370
1350
Specific Heat Capacity, J/kg-K 490
490
Thermal Conductivity, W/m-K 17
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 2.4
2.4

Otherwise Unclassified Properties

Base Metal Price, % relative 16
23
Density, g/cm3 7.7
7.8
Embodied Carbon, kg CO2/kg material 3.1
4.1
Embodied Energy, MJ/kg 44
59
Embodied Water, L/kg 150
200

Common Calculations

PREN (Pitting Resistance) 22
29
Resilience: Ultimate (Unit Rupture Work), MJ/m3 230
52
Resilience: Unit (Modulus of Resilience), kJ/m3 270
180
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 25
20
Strength to Weight: Bending, points 23
19
Thermal Diffusivity, mm2/s 4.5
3.9
Thermal Shock Resistance, points 15
12

Alloy Composition

Carbon (C), % 0.040 to 0.080
0.2 to 0.5
Cerium (Ce), % 0.030 to 0.080
0
Chromium (Cr), % 18 to 20
26 to 30
Iron (Fe), % 65.6 to 71.8
46.9 to 59.8
Manganese (Mn), % 0 to 1.0
0 to 2.0
Molybdenum (Mo), % 0
0 to 0.5
Nickel (Ni), % 9.0 to 11
14 to 18
Nitrogen (N), % 0.12 to 0.2
0
Phosphorus (P), % 0 to 0.045
0 to 0.040
Silicon (Si), % 1.0 to 2.0
0 to 2.0
Sulfur (S), % 0 to 0.015
0 to 0.040