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S44800 Stainless Steel vs. AISI 317 Stainless Steel

Both S44800 stainless steel and AISI 317 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 S44800 stainless steel and the bottom bar is AISI 317 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

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

Thermal Properties

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

Electrical Properties

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

Otherwise Unclassified Properties

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

Common Calculations

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

Alloy Composition

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