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ASTM Grade HC Steel vs. S17400 Stainless Steel

Both ASTM grade HC steel and S17400 stainless steel are iron alloys. They have 87% of their average alloy composition in common. There are 31 material properties with values for both materials. Properties with values for just one material (5, in this case) are not shown.

For each property being compared, the top bar is ASTM grade HC steel and the bottom bar is S17400 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
190
Elongation at Break, % 6.0
11 to 21
Fatigue Strength, MPa 96
380 to 670
Poisson's Ratio 0.27
0.28
Shear Modulus, GPa 80
75
Tensile Strength: Ultimate (UTS), MPa 430
910 to 1390
Tensile Strength: Yield (Proof), MPa 200
580 to 1250

Thermal Properties

Latent Heat of Fusion, J/g 310
280
Maximum Temperature: Corrosion, °C 460
450
Maximum Temperature: Mechanical, °C 1100
850
Melting Completion (Liquidus), °C 1410
1440
Melting Onset (Solidus), °C 1370
1400
Specific Heat Capacity, J/kg-K 490
480
Thermal Conductivity, W/m-K 17
17
Thermal Expansion, µm/m-K 11
11

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.2
2.3
Electrical Conductivity: Equal Weight (Specific), % IACS 2.6
2.6

Otherwise Unclassified Properties

Base Metal Price, % relative 14
14
Density, g/cm3 7.6
7.8
Embodied Carbon, kg CO2/kg material 2.8
2.7
Embodied Energy, MJ/kg 40
39
Embodied Water, L/kg 170
130

Common Calculations

PREN (Pitting Resistance) 29
16
Resilience: Ultimate (Unit Rupture Work), MJ/m3 21
140 to 160
Resilience: Unit (Modulus of Resilience), kJ/m3 95
880 to 4060
Stiffness to Weight: Axial, points 15
14
Stiffness to Weight: Bending, points 26
25
Strength to Weight: Axial, points 16
32 to 49
Strength to Weight: Bending, points 16
27 to 35
Thermal Diffusivity, mm2/s 4.5
4.5
Thermal Shock Resistance, points 14
30 to 46

Alloy Composition

Carbon (C), % 0 to 0.5
0 to 0.070
Chromium (Cr), % 26 to 30
15 to 17
Copper (Cu), % 0
3.0 to 5.0
Iron (Fe), % 61.9 to 74
70.4 to 78.9
Manganese (Mn), % 0 to 1.0
0 to 1.0
Molybdenum (Mo), % 0 to 0.5
0
Nickel (Ni), % 0 to 4.0
3.0 to 5.0
Niobium (Nb), % 0
0.15 to 0.45
Phosphorus (P), % 0 to 0.040
0 to 0.040
Silicon (Si), % 0 to 2.0
0 to 1.0
Sulfur (S), % 0 to 0.040
0 to 0.030