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S30815 Stainless Steel vs. S21600 Stainless Steel

Both S30815 stainless steel and S21600 stainless steel are iron alloys. Both are furnished in the annealed condition. They have 89% of their average alloy composition in common. There are 31 material properties with values for both materials. Properties with values for just one material (4, in this case) are not shown.

For each property being compared, the top bar is S30815 stainless steel and the bottom bar is S21600 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 190
200
Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 45
46
Fatigue Strength, MPa 320
360
Poisson's Ratio 0.28
0.28
Reduction in Area, % 56
56
Rockwell B Hardness 82
86
Shear Modulus, GPa 77
79
Shear Strength, MPa 480
500
Tensile Strength: Ultimate (UTS), MPa 680
710
Tensile Strength: Yield (Proof), MPa 350
390

Thermal Properties

Latent Heat of Fusion, J/g 310
290
Maximum Temperature: Corrosion, °C 430
420
Maximum Temperature: Mechanical, °C 1020
990
Melting Completion (Liquidus), °C 1400
1420
Melting Onset (Solidus), °C 1360
1380
Specific Heat Capacity, J/kg-K 490
480
Thermal Expansion, µm/m-K 17
17

Otherwise Unclassified Properties

Base Metal Price, % relative 17
17
Density, g/cm3 7.7
7.7
Embodied Carbon, kg CO2/kg material 3.3
3.6
Embodied Energy, MJ/kg 47
50
Embodied Water, L/kg 160
160

Common Calculations

PREN (Pitting Resistance) 24
34
Resilience: Ultimate (Unit Rupture Work), MJ/m3 260
270
Resilience: Unit (Modulus of Resilience), kJ/m3 310
370
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 25
25
Strength to Weight: Bending, points 22
23
Thermal Shock Resistance, points 15
15

Alloy Composition

Carbon (C), % 0.050 to 0.1
0 to 0.080
Cerium (Ce), % 0.030 to 0.080
0
Chromium (Cr), % 20 to 22
17.5 to 22
Iron (Fe), % 62.8 to 68.4
57.6 to 67.8
Manganese (Mn), % 0 to 0.8
7.5 to 9.0
Molybdenum (Mo), % 0
2.0 to 3.0
Nickel (Ni), % 10 to 12
5.0 to 7.0
Nitrogen (N), % 0.14 to 0.2
0.25 to 0.5
Phosphorus (P), % 0 to 0.040
0 to 0.045
Silicon (Si), % 1.4 to 2.0
0 to 0.75
Sulfur (S), % 0 to 0.030
0 to 0.030