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ASTM Grade HC Steel vs. S20910 Stainless Steel

Both ASTM grade HC steel and S20910 stainless steel are iron alloys. They have 82% of their average alloy composition in common. There are 29 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 S20910 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 6.0
14 to 39
Fatigue Strength, MPa 96
310 to 460
Poisson's Ratio 0.27
0.28
Shear Modulus, GPa 80
79
Tensile Strength: Ultimate (UTS), MPa 430
780 to 940
Tensile Strength: Yield (Proof), MPa 200
430 to 810

Thermal Properties

Latent Heat of Fusion, J/g 310
300
Maximum Temperature: Corrosion, °C 460
460
Maximum Temperature: Mechanical, °C 1100
1080
Melting Completion (Liquidus), °C 1410
1420
Melting Onset (Solidus), °C 1370
1380
Specific Heat Capacity, J/kg-K 490
480
Thermal Conductivity, W/m-K 17
13
Thermal Expansion, µm/m-K 11
16

Otherwise Unclassified Properties

Base Metal Price, % relative 14
22
Density, g/cm3 7.6
7.8
Embodied Carbon, kg CO2/kg material 2.8
4.8
Embodied Energy, MJ/kg 40
68
Embodied Water, L/kg 170
180

Common Calculations

PREN (Pitting Resistance) 29
34
Resilience: Ultimate (Unit Rupture Work), MJ/m3 21
120 to 260
Resilience: Unit (Modulus of Resilience), kJ/m3 95
460 to 1640
Stiffness to Weight: Axial, points 15
14
Stiffness to Weight: Bending, points 26
25
Strength to Weight: Axial, points 16
28 to 33
Strength to Weight: Bending, points 16
24 to 27
Thermal Diffusivity, mm2/s 4.5
3.6
Thermal Shock Resistance, points 14
17 to 21

Alloy Composition

Carbon (C), % 0 to 0.5
0 to 0.060
Chromium (Cr), % 26 to 30
20.5 to 23.5
Iron (Fe), % 61.9 to 74
52.1 to 62.1
Manganese (Mn), % 0 to 1.0
4.0 to 6.0
Molybdenum (Mo), % 0 to 0.5
1.5 to 3.0
Nickel (Ni), % 0 to 4.0
11.5 to 13.5
Niobium (Nb), % 0
0.1 to 0.3
Nitrogen (N), % 0
0.2 to 0.4
Phosphorus (P), % 0 to 0.040
0 to 0.040
Silicon (Si), % 0 to 2.0
0 to 0.75
Sulfur (S), % 0 to 0.040
0 to 0.030
Vanadium (V), % 0
0.1 to 0.3