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S31803 Stainless Steel vs. S17600 Stainless Steel

Both S31803 stainless steel and S17600 stainless steel are iron alloys. They have a moderately high 91% of their average alloy composition in common.

For each property being compared, the top bar is S31803 stainless steel and the bottom bar is S17600 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 260
270 to 410
Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 29
8.6 to 11
Fatigue Strength, MPa 370
300 to 680
Poisson's Ratio 0.27
0.28
Reduction in Area, % 50
28 to 50
Rockwell C Hardness 27
28 to 44
Shear Modulus, GPa 80
76
Shear Strength, MPa 460
560 to 880
Tensile Strength: Ultimate (UTS), MPa 710
940 to 1490
Tensile Strength: Yield (Proof), MPa 500
580 to 1310

Thermal Properties

Latent Heat of Fusion, J/g 300
290
Maximum Temperature: Corrosion, °C 430
550
Maximum Temperature: Mechanical, °C 1060
890
Melting Completion (Liquidus), °C 1450
1430
Melting Onset (Solidus), °C 1400
1390
Specific Heat Capacity, J/kg-K 480
480
Thermal Conductivity, W/m-K 16
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 17
13
Density, g/cm3 7.8
7.8
Embodied Carbon, kg CO2/kg material 3.6
2.9
Embodied Energy, MJ/kg 49
42
Embodied Water, L/kg 160
130

Common Calculations

PREN (Pitting Resistance) 34
17
Resilience: Ultimate (Unit Rupture Work), MJ/m3 180
70 to 150
Resilience: Unit (Modulus of Resilience), kJ/m3 630
850 to 4390
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 25
34 to 54
Strength to Weight: Bending, points 23
28 to 37
Thermal Diffusivity, mm2/s 4.3
4.1
Thermal Shock Resistance, points 20
31 to 50

Alloy Composition

Aluminum (Al), % 0
0 to 0.4
Carbon (C), % 0 to 0.030
0 to 0.080
Chromium (Cr), % 21 to 23
16 to 17.5
Iron (Fe), % 63.7 to 71.9
71.3 to 77.6
Manganese (Mn), % 0 to 2.0
0 to 1.0
Molybdenum (Mo), % 2.5 to 3.5
0
Nickel (Ni), % 4.5 to 6.5
6.0 to 7.5
Nitrogen (N), % 0.080 to 0.2
0
Phosphorus (P), % 0 to 0.030
0 to 0.040
Silicon (Si), % 0 to 1.0
0 to 1.0
Sulfur (S), % 0 to 0.020
0 to 0.030
Titanium (Ti), % 0
0.4 to 1.2