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S31803 Stainless Steel vs. ASTM Grade HC Steel

Both S31803 stainless steel and ASTM grade HC steel are iron alloys. They have a moderately high 93% of their average alloy composition in common. There are 31 material properties with values for both materials. Properties with values for just one material (4, in this case) are not shown.

For each property being compared, the top bar is S31803 stainless steel and the bottom bar is ASTM grade HC steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 29
6.0
Fatigue Strength, MPa 370
96
Poisson's Ratio 0.27
0.27
Shear Modulus, GPa 80
80
Tensile Strength: Ultimate (UTS), MPa 710
430
Tensile Strength: Yield (Proof), MPa 500
200

Thermal Properties

Latent Heat of Fusion, J/g 300
310
Maximum Temperature: Corrosion, °C 430
460
Maximum Temperature: Mechanical, °C 1060
1100
Melting Completion (Liquidus), °C 1450
1410
Melting Onset (Solidus), °C 1400
1370
Specific Heat Capacity, J/kg-K 480
490
Thermal Conductivity, W/m-K 16
17
Thermal Expansion, µm/m-K 13
11

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.2
2.2
Electrical Conductivity: Equal Weight (Specific), % IACS 2.5
2.6

Otherwise Unclassified Properties

Base Metal Price, % relative 17
14
Density, g/cm3 7.8
7.6
Embodied Carbon, kg CO2/kg material 3.6
2.8
Embodied Energy, MJ/kg 49
40
Embodied Water, L/kg 160
170

Common Calculations

PREN (Pitting Resistance) 34
29
Resilience: Ultimate (Unit Rupture Work), MJ/m3 180
21
Resilience: Unit (Modulus of Resilience), kJ/m3 630
95
Stiffness to Weight: Axial, points 14
15
Stiffness to Weight: Bending, points 25
26
Strength to Weight: Axial, points 25
16
Strength to Weight: Bending, points 23
16
Thermal Diffusivity, mm2/s 4.3
4.5
Thermal Shock Resistance, points 20
14

Alloy Composition

Carbon (C), % 0 to 0.030
0 to 0.5
Chromium (Cr), % 21 to 23
26 to 30
Iron (Fe), % 63.7 to 71.9
61.9 to 74
Manganese (Mn), % 0 to 2.0
0 to 1.0
Molybdenum (Mo), % 2.5 to 3.5
0 to 0.5
Nickel (Ni), % 4.5 to 6.5
0 to 4.0
Nitrogen (N), % 0.080 to 0.2
0
Phosphorus (P), % 0 to 0.030
0 to 0.040
Silicon (Si), % 0 to 1.0
0 to 2.0
Sulfur (S), % 0 to 0.020
0 to 0.040