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AISI 317 Stainless Steel vs. S44800 Stainless Steel

Both AISI 317 stainless steel and S44800 stainless steel are iron alloys. They have 88% of their average alloy composition in common. There are 33 material properties with values for both materials. Properties with values for just one material (2, in this case) are not shown.

For each property being compared, the top bar is AISI 317 stainless steel and the bottom bar is S44800 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 170 to 220
190
Elastic (Young's, Tensile) Modulus, GPa 200
210
Elongation at Break, % 35 to 55
23
Fatigue Strength, MPa 250 to 330
300
Poisson's Ratio 0.28
0.27
Shear Modulus, GPa 79
82
Shear Strength, MPa 420 to 470
370
Tensile Strength: Ultimate (UTS), MPa 580 to 710
590
Tensile Strength: Yield (Proof), MPa 250 to 420
450

Thermal Properties

Latent Heat of Fusion, J/g 290
300
Maximum Temperature: Corrosion, °C 420
460
Maximum Temperature: Mechanical, °C 590
1100
Melting Completion (Liquidus), °C 1400
1460
Melting Onset (Solidus), °C 1380
1410
Specific Heat Capacity, J/kg-K 470
480
Thermal Conductivity, W/m-K 15
17
Thermal Expansion, µm/m-K 17
11

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.3
2.6
Electrical Conductivity: Equal Weight (Specific), % IACS 2.6
3.0

Otherwise Unclassified Properties

Base Metal Price, % relative 21
19
Density, g/cm3 7.9
7.8
Embodied Carbon, kg CO2/kg material 4.3
3.8
Embodied Energy, MJ/kg 59
52
Embodied Water, L/kg 160
190

Common Calculations

PREN (Pitting Resistance) 31
42
Resilience: Ultimate (Unit Rupture Work), MJ/m3 210 to 260
120
Resilience: Unit (Modulus of Resilience), kJ/m3 150 to 430
480
Stiffness to Weight: Axial, points 14
15
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 20 to 25
21
Strength to Weight: Bending, points 20 to 22
20
Thermal Diffusivity, mm2/s 4.1
4.6
Thermal Shock Resistance, points 12 to 15
19

Alloy Composition

Carbon (C), % 0 to 0.080
0 to 0.010
Chromium (Cr), % 18 to 20
28 to 30
Copper (Cu), % 0
0 to 0.15
Iron (Fe), % 58 to 68
62.6 to 66.5
Manganese (Mn), % 0 to 2.0
0 to 0.3
Molybdenum (Mo), % 3.0 to 4.0
3.5 to 4.2
Nickel (Ni), % 11 to 15
2.0 to 2.5
Nitrogen (N), % 0 to 0.1
0 to 0.020
Phosphorus (P), % 0 to 0.045
0 to 0.025
Silicon (Si), % 0 to 0.75
0 to 0.2
Sulfur (S), % 0 to 0.030
0 to 0.020