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ASTM Grade HI Steel vs. S35500 Stainless Steel

Both ASTM grade HI steel and S35500 stainless steel are iron alloys. They have 75% of their average alloy composition in common. There are 31 material properties with values for both materials. Properties with values for just one material (3, in this case) are not shown.

For each property being compared, the top bar is ASTM grade HI steel and the bottom bar is S35500 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 11
14
Fatigue Strength, MPa 150
690 to 730
Poisson's Ratio 0.27
0.28
Shear Modulus, GPa 79
78
Tensile Strength: Ultimate (UTS), MPa 550
1330 to 1490
Tensile Strength: Yield (Proof), MPa 270
1200 to 1280

Thermal Properties

Latent Heat of Fusion, J/g 310
280
Maximum Temperature: Corrosion, °C 450
440
Maximum Temperature: Mechanical, °C 1100
870
Melting Completion (Liquidus), °C 1400
1460
Melting Onset (Solidus), °C 1350
1420
Specific Heat Capacity, J/kg-K 490
470
Thermal Conductivity, W/m-K 15
16
Thermal Expansion, µm/m-K 17
11

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.1
2.2
Electrical Conductivity: Equal Weight (Specific), % IACS 2.4
2.5

Otherwise Unclassified Properties

Base Metal Price, % relative 23
16
Density, g/cm3 7.8
7.8
Embodied Carbon, kg CO2/kg material 4.1
3.5
Embodied Energy, MJ/kg 59
47
Embodied Water, L/kg 200
130

Common Calculations

PREN (Pitting Resistance) 29
27
Resilience: Ultimate (Unit Rupture Work), MJ/m3 52
180 to 190
Resilience: Unit (Modulus of Resilience), kJ/m3 180
3610 to 4100
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 20
47 to 53
Strength to Weight: Bending, points 19
34 to 37
Thermal Diffusivity, mm2/s 3.9
4.4
Thermal Shock Resistance, points 12
44 to 49

Alloy Composition

Carbon (C), % 0.2 to 0.5
0.1 to 0.15
Chromium (Cr), % 26 to 30
15 to 16
Iron (Fe), % 46.9 to 59.8
73.2 to 77.7
Manganese (Mn), % 0 to 2.0
0.5 to 1.3
Molybdenum (Mo), % 0 to 0.5
2.5 to 3.2
Nickel (Ni), % 14 to 18
4.0 to 5.0
Niobium (Nb), % 0
0.1 to 0.5
Nitrogen (N), % 0
0.070 to 0.13
Phosphorus (P), % 0 to 0.040
0 to 0.040
Silicon (Si), % 0 to 2.0
0 to 0.5
Sulfur (S), % 0 to 0.040
0 to 0.030