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S81921 Stainless Steel vs. S13800 Stainless Steel

Both S81921 stainless steel and S13800 stainless steel are iron alloys. They have 89% of their average alloy composition in common. There are 34 material properties with values for both materials. Properties with values for just one material (1, in this case) are not shown.

For each property being compared, the top bar is S81921 stainless steel and the bottom bar is S13800 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 260
290 to 480
Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 29
11 to 18
Fatigue Strength, MPa 370
410 to 870
Poisson's Ratio 0.28
0.28
Rockwell C Hardness 27
30 to 51
Shear Modulus, GPa 79
77
Shear Strength, MPa 460
610 to 1030
Tensile Strength: Ultimate (UTS), MPa 710
980 to 1730
Tensile Strength: Yield (Proof), MPa 500
660 to 1580

Thermal Properties

Latent Heat of Fusion, J/g 290
280
Maximum Temperature: Corrosion, °C 430
390
Maximum Temperature: Mechanical, °C 990
810
Melting Completion (Liquidus), °C 1430
1450
Melting Onset (Solidus), °C 1390
1410
Specific Heat Capacity, J/kg-K 480
470
Thermal Conductivity, W/m-K 15
16
Thermal Expansion, µm/m-K 13
11

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.2
2.3
Electrical Conductivity: Equal Weight (Specific), % IACS 2.5
2.6

Otherwise Unclassified Properties

Base Metal Price, % relative 14
15
Density, g/cm3 7.7
7.9
Embodied Carbon, kg CO2/kg material 2.9
3.4
Embodied Energy, MJ/kg 41
46
Embodied Water, L/kg 150
140

Common Calculations

PREN (Pitting Resistance) 28
21
Resilience: Ultimate (Unit Rupture Work), MJ/m3 180
150 to 190
Resilience: Unit (Modulus of Resilience), kJ/m3 630
1090 to 5490
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 25
35 to 61
Strength to Weight: Bending, points 23
28 to 41
Thermal Diffusivity, mm2/s 4.0
4.3
Thermal Shock Resistance, points 20
33 to 58

Alloy Composition

Aluminum (Al), % 0
0.9 to 1.4
Carbon (C), % 0 to 0.030
0 to 0.050
Chromium (Cr), % 19 to 22
12.3 to 13.2
Iron (Fe), % 66.7 to 75.9
73.6 to 77.3
Manganese (Mn), % 2.0 to 4.0
0 to 0.2
Molybdenum (Mo), % 1.0 to 2.0
2.0 to 3.0
Nickel (Ni), % 2.0 to 4.0
7.5 to 8.5
Nitrogen (N), % 0.14 to 0.2
0 to 0.010
Phosphorus (P), % 0 to 0.040
0 to 0.010
Silicon (Si), % 0 to 1.0
0 to 0.1
Sulfur (S), % 0 to 0.030
0 to 0.0080