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AISI 440C Stainless Steel vs. S20910 Stainless Steel

Both AISI 440C stainless steel and S20910 stainless steel are iron alloys. They have 75% 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 AISI 440C stainless 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, % 2.0 to 14
14 to 39
Fatigue Strength, MPa 260 to 840
310 to 460
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 76
79
Shear Strength, MPa 430 to 1120
500 to 570
Tensile Strength: Ultimate (UTS), MPa 710 to 1970
780 to 940
Tensile Strength: Yield (Proof), MPa 450 to 1900
430 to 810

Thermal Properties

Latent Heat of Fusion, J/g 280
300
Maximum Temperature: Corrosion, °C 390
460
Maximum Temperature: Mechanical, °C 870
1080
Melting Completion (Liquidus), °C 1480
1420
Melting Onset (Solidus), °C 1370
1380
Specific Heat Capacity, J/kg-K 480
480
Thermal Conductivity, W/m-K 22
13
Thermal Expansion, µm/m-K 10
16

Otherwise Unclassified Properties

Base Metal Price, % relative 9.0
22
Density, g/cm3 7.7
7.8
Embodied Carbon, kg CO2/kg material 2.2
4.8
Embodied Energy, MJ/kg 31
68
Embodied Water, L/kg 120
180

Common Calculations

PREN (Pitting Resistance) 18
34
Resilience: Ultimate (Unit Rupture Work), MJ/m3 39 to 88
120 to 260
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 26 to 71
28 to 33
Strength to Weight: Bending, points 23 to 46
24 to 27
Thermal Diffusivity, mm2/s 6.0
3.6
Thermal Shock Resistance, points 26 to 71
17 to 21

Alloy Composition

Carbon (C), % 1.0 to 1.2
0 to 0.060
Chromium (Cr), % 16 to 18
20.5 to 23.5
Iron (Fe), % 78 to 83.1
52.1 to 62.1
Manganese (Mn), % 0 to 1.0
4.0 to 6.0
Molybdenum (Mo), % 0 to 0.75
1.5 to 3.0
Nickel (Ni), % 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 1.0
0 to 0.75
Sulfur (S), % 0 to 0.015
0 to 0.030
Vanadium (V), % 0
0.1 to 0.3

Comparable Variants