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S17400 Stainless Steel vs. S44800 Stainless Steel

Both S17400 stainless steel and S44800 stainless steel are iron alloys. They have 83% of their average alloy composition in common. There are 35 material properties with values for both materials. Properties with values for just one material (1, in this case) are not shown.

For each property being compared, the top bar is S17400 stainless steel and the bottom bar is S44800 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 280 to 440
190
Elastic (Young's, Tensile) Modulus, GPa 190
210
Elongation at Break, % 11 to 21
23
Fatigue Strength, MPa 380 to 670
300
Poisson's Ratio 0.28
0.27
Reduction in Area, % 40 to 62
45
Rockwell C Hardness 27 to 43
18
Shear Modulus, GPa 75
82
Shear Strength, MPa 570 to 830
370
Tensile Strength: Ultimate (UTS), MPa 910 to 1390
590
Tensile Strength: Yield (Proof), MPa 580 to 1250
450

Thermal Properties

Latent Heat of Fusion, J/g 280
300
Maximum Temperature: Corrosion, °C 450
460
Maximum Temperature: Mechanical, °C 850
1100
Melting Completion (Liquidus), °C 1440
1460
Melting Onset (Solidus), °C 1400
1410
Specific Heat Capacity, J/kg-K 480
480
Thermal Conductivity, W/m-K 17
17
Thermal Expansion, µm/m-K 11
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 14
19
Density, g/cm3 7.8
7.8
Embodied Carbon, kg CO2/kg material 2.7
3.8
Embodied Energy, MJ/kg 39
52
Embodied Water, L/kg 130
190

Common Calculations

PREN (Pitting Resistance) 16
42
Resilience: Ultimate (Unit Rupture Work), MJ/m3 140 to 160
120
Resilience: Unit (Modulus of Resilience), kJ/m3 880 to 4060
480
Stiffness to Weight: Axial, points 14
15
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 32 to 49
21
Strength to Weight: Bending, points 27 to 35
20
Thermal Diffusivity, mm2/s 4.5
4.6
Thermal Shock Resistance, points 30 to 46
19

Alloy Composition

Carbon (C), % 0 to 0.070
0 to 0.010
Chromium (Cr), % 15 to 17
28 to 30
Copper (Cu), % 3.0 to 5.0
0 to 0.15
Iron (Fe), % 70.4 to 78.9
62.6 to 66.5
Manganese (Mn), % 0 to 1.0
0 to 0.3
Molybdenum (Mo), % 0
3.5 to 4.2
Nickel (Ni), % 3.0 to 5.0
2.0 to 2.5
Niobium (Nb), % 0.15 to 0.45
0
Nitrogen (N), % 0
0 to 0.020
Phosphorus (P), % 0 to 0.040
0 to 0.025
Silicon (Si), % 0 to 1.0
0 to 0.2
Sulfur (S), % 0 to 0.030
0 to 0.020