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S82122 Stainless Steel vs. S17700 Stainless Steel

Both S82122 stainless steel and S17700 stainless steel are iron alloys. They have a moderately high 92% of their average alloy composition in common.

For each property being compared, the top bar is S82122 stainless steel and the bottom bar is S17700 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 260
180 to 430
Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 34
1.0 to 23
Fatigue Strength, MPa 360
290 to 560
Poisson's Ratio 0.28
0.28
Rockwell C Hardness 28
41 to 46
Shear Modulus, GPa 78
76
Shear Strength, MPa 460
740 to 940
Tensile Strength: Ultimate (UTS), MPa 680
1180 to 1650
Tensile Strength: Yield (Proof), MPa 450
430 to 1210

Thermal Properties

Latent Heat of Fusion, J/g 290
290
Maximum Temperature: Corrosion, °C 430
410
Maximum Temperature: Mechanical, °C 990
890
Melting Completion (Liquidus), °C 1420
1440
Melting Onset (Solidus), °C 1380
1400
Specific Heat Capacity, J/kg-K 480
480
Thermal Conductivity, W/m-K 15
15
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
2.7

Otherwise Unclassified Properties

Base Metal Price, % relative 12
13
Density, g/cm3 7.7
7.7
Embodied Carbon, kg CO2/kg material 2.6
2.8
Embodied Energy, MJ/kg 37
40
Embodied Water, L/kg 150
150

Common Calculations

PREN (Pitting Resistance) 25
17
Resilience: Ultimate (Unit Rupture Work), MJ/m3 210
15 to 210
Resilience: Unit (Modulus of Resilience), kJ/m3 510
460 to 3750
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 25
42 to 59
Strength to Weight: Bending, points 22
32 to 40
Thermal Diffusivity, mm2/s 4.0
4.1
Thermal Shock Resistance, points 19
39 to 54

Alloy Composition

Aluminum (Al), % 0
0.75 to 1.5
Carbon (C), % 0 to 0.030
0 to 0.090
Chromium (Cr), % 20.5 to 21.5
16 to 18
Copper (Cu), % 0.5 to 1.5
0
Iron (Fe), % 68.9 to 75.4
70.5 to 76.8
Manganese (Mn), % 2.0 to 4.0
0 to 1.0
Molybdenum (Mo), % 0 to 0.6
0
Nickel (Ni), % 1.5 to 2.5
6.5 to 7.8
Nitrogen (N), % 0.15 to 0.2
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 0.020
0 to 0.030