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S20910 Stainless Steel vs. AISI 440B Stainless Steel

Both S20910 stainless steel and AISI 440B 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 S20910 stainless steel and the bottom bar is AISI 440B stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 14 to 39
3.0 to 18
Fatigue Strength, MPa 310 to 460
260 to 850
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 79
77
Shear Strength, MPa 500 to 570
460 to 1110
Tensile Strength: Ultimate (UTS), MPa 780 to 940
740 to 1930
Tensile Strength: Yield (Proof), MPa 430 to 810
430 to 1860

Thermal Properties

Latent Heat of Fusion, J/g 300
280
Maximum Temperature: Corrosion, °C 460
390
Maximum Temperature: Mechanical, °C 1080
870
Melting Completion (Liquidus), °C 1420
1480
Melting Onset (Solidus), °C 1380
1370
Specific Heat Capacity, J/kg-K 480
480
Thermal Conductivity, W/m-K 13
23
Thermal Expansion, µm/m-K 16
10

Otherwise Unclassified Properties

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

Common Calculations

PREN (Pitting Resistance) 34
18
Resilience: Ultimate (Unit Rupture Work), MJ/m3 120 to 260
57 to 110
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 28 to 33
27 to 70
Strength to Weight: Bending, points 24 to 27
24 to 45
Thermal Diffusivity, mm2/s 3.6
6.1
Thermal Shock Resistance, points 17 to 21
27 to 70

Alloy Composition

Carbon (C), % 0 to 0.060
0.75 to 1.0
Chromium (Cr), % 20.5 to 23.5
16 to 18
Iron (Fe), % 52.1 to 62.1
78.2 to 83.3
Manganese (Mn), % 4.0 to 6.0
0 to 1.0
Molybdenum (Mo), % 1.5 to 3.0
0 to 0.75
Nickel (Ni), % 11.5 to 13.5
0
Niobium (Nb), % 0.1 to 0.3
0
Nitrogen (N), % 0.2 to 0.4
0
Phosphorus (P), % 0 to 0.040
0 to 0.040
Silicon (Si), % 0 to 0.75
0 to 1.0
Sulfur (S), % 0 to 0.030
0 to 0.015
Vanadium (V), % 0.1 to 0.3
0

Comparable Variants