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S17600 Stainless Steel vs. S21800 Stainless Steel

Both S17600 stainless steel and S21800 stainless steel are iron alloys. They have 87% of their average alloy composition in common. There are 30 material properties with values for both materials. Properties with values for just one material (6, in this case) are not shown.

For each property being compared, the top bar is S17600 stainless steel and the bottom bar is S21800 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 270 to 410
210
Elastic (Young's, Tensile) Modulus, GPa 200
190
Elongation at Break, % 8.6 to 11
40
Fatigue Strength, MPa 300 to 680
330
Poisson's Ratio 0.28
0.28
Reduction in Area, % 28 to 50
62
Shear Modulus, GPa 76
75
Shear Strength, MPa 560 to 880
510
Tensile Strength: Ultimate (UTS), MPa 940 to 1490
740
Tensile Strength: Yield (Proof), MPa 580 to 1310
390

Thermal Properties

Latent Heat of Fusion, J/g 290
340
Maximum Temperature: Corrosion, °C 550
410
Maximum Temperature: Mechanical, °C 890
900
Melting Completion (Liquidus), °C 1430
1360
Melting Onset (Solidus), °C 1390
1310
Specific Heat Capacity, J/kg-K 480
500
Thermal Expansion, µm/m-K 11
16

Otherwise Unclassified Properties

Base Metal Price, % relative 13
15
Density, g/cm3 7.8
7.5
Embodied Carbon, kg CO2/kg material 2.9
3.1
Embodied Energy, MJ/kg 42
45
Embodied Water, L/kg 130
150

Common Calculations

PREN (Pitting Resistance) 17
19
Resilience: Ultimate (Unit Rupture Work), MJ/m3 70 to 150
250
Resilience: Unit (Modulus of Resilience), kJ/m3 850 to 4390
390
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
26
Strength to Weight: Axial, points 34 to 54
27
Strength to Weight: Bending, points 28 to 37
24
Thermal Shock Resistance, points 31 to 50
17

Alloy Composition

Aluminum (Al), % 0 to 0.4
0
Carbon (C), % 0 to 0.080
0 to 0.1
Chromium (Cr), % 16 to 17.5
16 to 18
Iron (Fe), % 71.3 to 77.6
59.1 to 65.4
Manganese (Mn), % 0 to 1.0
7.0 to 9.0
Nickel (Ni), % 6.0 to 7.5
8.0 to 9.0
Nitrogen (N), % 0
0.080 to 0.18
Phosphorus (P), % 0 to 0.040
0 to 0.060
Silicon (Si), % 0 to 1.0
3.5 to 4.5
Sulfur (S), % 0 to 0.030
0 to 0.030
Titanium (Ti), % 0.4 to 1.2
0