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S38815 Stainless Steel vs. S44625 Stainless Steel

Both S38815 stainless steel and S44625 stainless steel are iron alloys. Both are furnished in the annealed condition. They have 77% of their average alloy composition in common. There are 28 material properties with values for both materials. Properties with values for just one material (5, in this case) are not shown.

For each property being compared, the top bar is S38815 stainless steel and the bottom bar is S44625 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
200
Elongation at Break, % 34
22
Fatigue Strength, MPa 230
240
Poisson's Ratio 0.29
0.27
Shear Modulus, GPa 74
80
Shear Strength, MPa 410
370
Tensile Strength: Ultimate (UTS), MPa 610
590
Tensile Strength: Yield (Proof), MPa 290
360

Thermal Properties

Latent Heat of Fusion, J/g 370
290
Maximum Temperature: Corrosion, °C 400
450
Maximum Temperature: Mechanical, °C 860
1100
Melting Completion (Liquidus), °C 1360
1440
Melting Onset (Solidus), °C 1310
1400
Specific Heat Capacity, J/kg-K 500
480
Thermal Expansion, µm/m-K 15
11

Otherwise Unclassified Properties

Base Metal Price, % relative 19
14
Density, g/cm3 7.5
7.7
Embodied Carbon, kg CO2/kg material 3.8
2.8
Embodied Energy, MJ/kg 54
39
Embodied Water, L/kg 140
160

Common Calculations

PREN (Pitting Resistance) 18
30
Resilience: Ultimate (Unit Rupture Work), MJ/m3 170
110
Resilience: Unit (Modulus of Resilience), kJ/m3 220
310
Stiffness to Weight: Axial, points 14
15
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 22
21
Strength to Weight: Bending, points 21
20
Thermal Shock Resistance, points 15
19

Alloy Composition

Aluminum (Al), % 0 to 0.3
0
Carbon (C), % 0 to 0.030
0 to 0.010
Chromium (Cr), % 13 to 15
25 to 27.5
Copper (Cu), % 0.75 to 1.5
0 to 0.2
Iron (Fe), % 56.1 to 67
69.4 to 74.3
Manganese (Mn), % 0 to 2.0
0 to 0.4
Molybdenum (Mo), % 0.75 to 1.5
0.75 to 1.5
Nickel (Ni), % 13 to 17
0 to 0.5
Nitrogen (N), % 0
0 to 0.015
Phosphorus (P), % 0 to 0.040
0 to 0.020
Silicon (Si), % 5.5 to 6.5
0 to 0.4
Sulfur (S), % 0 to 0.020
0 to 0.020