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ASTM Grade HI Steel vs. S35140 Stainless Steel

Both ASTM grade HI steel and S35140 stainless steel are iron alloys. They have 87% 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 ASTM grade HI steel and the bottom bar is S35140 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 160
210
Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 11
34
Fatigue Strength, MPa 150
250
Poisson's Ratio 0.27
0.28
Shear Modulus, GPa 79
78
Tensile Strength: Ultimate (UTS), MPa 550
690
Tensile Strength: Yield (Proof), MPa 270
310

Thermal Properties

Latent Heat of Fusion, J/g 310
300
Maximum Temperature: Corrosion, °C 450
500
Maximum Temperature: Mechanical, °C 1100
1100
Melting Completion (Liquidus), °C 1400
1420
Melting Onset (Solidus), °C 1350
1370
Specific Heat Capacity, J/kg-K 490
470
Thermal Conductivity, W/m-K 15
14
Thermal Expansion, µm/m-K 17
16

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.1
1.7
Electrical Conductivity: Equal Weight (Specific), % IACS 2.4
1.9

Otherwise Unclassified Properties

Base Metal Price, % relative 23
31
Density, g/cm3 7.8
8.0
Embodied Carbon, kg CO2/kg material 4.1
5.5
Embodied Energy, MJ/kg 59
78
Embodied Water, L/kg 200
190

Common Calculations

PREN (Pitting Resistance) 29
28
Resilience: Ultimate (Unit Rupture Work), MJ/m3 52
190
Resilience: Unit (Modulus of Resilience), kJ/m3 180
250
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
24
Strength to Weight: Axial, points 20
24
Strength to Weight: Bending, points 19
22
Thermal Diffusivity, mm2/s 3.9
3.7
Thermal Shock Resistance, points 12
16

Alloy Composition

Carbon (C), % 0.2 to 0.5
0 to 0.1
Chromium (Cr), % 26 to 30
20 to 22
Iron (Fe), % 46.9 to 59.8
44.1 to 52.7
Manganese (Mn), % 0 to 2.0
1.0 to 3.0
Molybdenum (Mo), % 0 to 0.5
1.0 to 2.0
Nickel (Ni), % 14 to 18
25 to 27
Niobium (Nb), % 0
0.25 to 0.75
Nitrogen (N), % 0
0.080 to 0.2
Phosphorus (P), % 0 to 0.040
0 to 0.045
Silicon (Si), % 0 to 2.0
0 to 0.75
Sulfur (S), % 0 to 0.040
0 to 0.030