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EN 1.4749 Stainless Steel vs. ASTM Grade HI Steel

Both EN 1.4749 stainless steel and ASTM grade HI steel are iron alloys. They have 82% 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 1.4749 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, % 16
11
Fatigue Strength, MPa 190
150
Poisson's Ratio 0.27
0.27
Shear Modulus, GPa 80
79
Tensile Strength: Ultimate (UTS), MPa 600
550
Tensile Strength: Yield (Proof), MPa 320
270

Thermal Properties

Latent Heat of Fusion, J/g 300
310
Maximum Temperature: Corrosion, °C 450
450
Maximum Temperature: Mechanical, °C 1100
1100
Melting Completion (Liquidus), °C 1420
1400
Melting Onset (Solidus), °C 1380
1350
Specific Heat Capacity, J/kg-K 490
490
Thermal Conductivity, W/m-K 17
15
Thermal Expansion, µm/m-K 9.6
17

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.5
2.1
Electrical Conductivity: Equal Weight (Specific), % IACS 2.9
2.4

Otherwise Unclassified Properties

Base Metal Price, % relative 13
23
Density, g/cm3 7.6
7.8
Embodied Carbon, kg CO2/kg material 2.5
4.1
Embodied Energy, MJ/kg 36
59
Embodied Water, L/kg 160
200

Common Calculations

PREN (Pitting Resistance) 31
29
Resilience: Ultimate (Unit Rupture Work), MJ/m3 80
52
Resilience: Unit (Modulus of Resilience), kJ/m3 250
180
Stiffness to Weight: Axial, points 15
14
Stiffness to Weight: Bending, points 26
25
Strength to Weight: Axial, points 22
20
Strength to Weight: Bending, points 21
19
Thermal Diffusivity, mm2/s 4.6
3.9
Thermal Shock Resistance, points 22
12

Alloy Composition

Carbon (C), % 0.15 to 0.2
0.2 to 0.5
Chromium (Cr), % 26 to 29
26 to 30
Iron (Fe), % 68.5 to 73.7
46.9 to 59.8
Manganese (Mn), % 0 to 1.0
0 to 2.0
Molybdenum (Mo), % 0
0 to 0.5
Nickel (Ni), % 0
14 to 18
Nitrogen (N), % 0.15 to 0.25
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 0.015
0 to 0.040