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S38815 Stainless Steel vs. AISI 441 Stainless Steel

Both S38815 stainless steel and AISI 441 stainless steel are iron alloys. Both are furnished in the annealed condition. They have 77% of their average alloy composition in common. There are 29 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 AISI 441 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 190
170
Elastic (Young's, Tensile) Modulus, GPa 190
200
Elongation at Break, % 34
23
Fatigue Strength, MPa 230
180
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 74
77
Shear Strength, MPa 410
300
Tensile Strength: Ultimate (UTS), MPa 610
470
Tensile Strength: Yield (Proof), MPa 290
270

Thermal Properties

Latent Heat of Fusion, J/g 370
280
Maximum Temperature: Corrosion, °C 400
550
Maximum Temperature: Mechanical, °C 860
910
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
10

Otherwise Unclassified Properties

Base Metal Price, % relative 19
13
Density, g/cm3 7.5
7.7
Embodied Carbon, kg CO2/kg material 3.8
2.8
Embodied Energy, MJ/kg 54
41
Embodied Water, L/kg 140
130

Common Calculations

PREN (Pitting Resistance) 18
19
Resilience: Ultimate (Unit Rupture Work), MJ/m3 170
92
Resilience: Unit (Modulus of Resilience), kJ/m3 220
190
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 22
17
Strength to Weight: Bending, points 21
17
Thermal Shock Resistance, points 15
16

Alloy Composition

Aluminum (Al), % 0 to 0.3
0
Carbon (C), % 0 to 0.030
0 to 0.030
Chromium (Cr), % 13 to 15
17.5 to 19.5
Copper (Cu), % 0.75 to 1.5
0
Iron (Fe), % 56.1 to 67
76 to 82.2
Manganese (Mn), % 0 to 2.0
0 to 1.0
Molybdenum (Mo), % 0.75 to 1.5
0
Nickel (Ni), % 13 to 17
0 to 1.0
Niobium (Nb), % 0
0.3 to 0.9
Nitrogen (N), % 0
0 to 0.030
Phosphorus (P), % 0 to 0.040
0 to 0.040
Silicon (Si), % 5.5 to 6.5
0 to 1.0
Sulfur (S), % 0 to 0.020
0 to 0.030
Titanium (Ti), % 0
0.1 to 0.5