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S21900 Stainless Steel vs. S15700 Stainless Steel

Both S21900 stainless steel and S15700 stainless steel are iron alloys. They have 86% of their average alloy composition in common. There are 33 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 S21900 stainless steel and the bottom bar is S15700 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 220
200 to 460
Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 50
1.1 to 29
Fatigue Strength, MPa 380
370 to 770
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 78
77
Shear Strength, MPa 510
770 to 1070
Tensile Strength: Ultimate (UTS), MPa 710
1180 to 1890
Tensile Strength: Yield (Proof), MPa 390
500 to 1770

Thermal Properties

Latent Heat of Fusion, J/g 290
290
Maximum Temperature: Corrosion, °C 420
400
Maximum Temperature: Mechanical, °C 980
870
Melting Completion (Liquidus), °C 1400
1440
Melting Onset (Solidus), °C 1350
1400
Specific Heat Capacity, J/kg-K 480
480
Thermal Conductivity, W/m-K 14
16
Thermal Expansion, µm/m-K 17
11

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.5
2.3
Electrical Conductivity: Equal Weight (Specific), % IACS 2.9
2.6

Otherwise Unclassified Properties

Base Metal Price, % relative 15
15
Density, g/cm3 7.7
7.8
Embodied Carbon, kg CO2/kg material 3.0
3.4
Embodied Energy, MJ/kg 43
47
Embodied Water, L/kg 160
140

Common Calculations

PREN (Pitting Resistance) 25
23
Resilience: Ultimate (Unit Rupture Work), MJ/m3 300
17 to 270
Resilience: Unit (Modulus of Resilience), kJ/m3 380
640 to 4660
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 26
42 to 67
Strength to Weight: Bending, points 23
32 to 43
Thermal Diffusivity, mm2/s 3.8
4.2
Thermal Shock Resistance, points 15
39 to 63

Alloy Composition

Aluminum (Al), % 0
0.75 to 1.5
Carbon (C), % 0 to 0.080
0 to 0.090
Chromium (Cr), % 19 to 21.5
14 to 16
Iron (Fe), % 59.4 to 67.4
69.6 to 76.8
Manganese (Mn), % 8.0 to 10
0 to 1.0
Molybdenum (Mo), % 0
2.0 to 3.0
Nickel (Ni), % 5.5 to 7.5
6.5 to 7.7
Nitrogen (N), % 0.15 to 0.4
0
Phosphorus (P), % 0 to 0.045
0 to 0.040
Silicon (Si), % 0 to 1.0
0 to 1.0
Sulfur (S), % 0 to 0.030
0 to 0.030