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S38815 Stainless Steel vs. S39274 Stainless Steel

Both S38815 stainless steel and S39274 stainless steel are iron alloys. Both are furnished in the annealed condition. They have 85% of their average alloy composition in common. There are 29 material properties with values for both materials. Properties with values for just one material (6, in this case) are not shown.

For each property being compared, the top bar is S38815 stainless steel and the bottom bar is S39274 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 190
270
Elastic (Young's, Tensile) Modulus, GPa 190
210
Elongation at Break, % 34
17
Fatigue Strength, MPa 230
380
Poisson's Ratio 0.29
0.27
Shear Modulus, GPa 74
81
Shear Strength, MPa 410
560
Tensile Strength: Ultimate (UTS), MPa 610
900
Tensile Strength: Yield (Proof), MPa 290
620

Thermal Properties

Latent Heat of Fusion, J/g 370
300
Maximum Temperature: Corrosion, °C 400
450
Maximum Temperature: Mechanical, °C 860
1100
Melting Completion (Liquidus), °C 1360
1480
Melting Onset (Solidus), °C 1310
1430
Specific Heat Capacity, J/kg-K 500
470
Thermal Expansion, µm/m-K 15
13

Otherwise Unclassified Properties

Base Metal Price, % relative 19
24
Density, g/cm3 7.5
8.0
Embodied Carbon, kg CO2/kg material 3.8
4.3
Embodied Energy, MJ/kg 54
60
Embodied Water, L/kg 140
180

Common Calculations

PREN (Pitting Resistance) 18
43
Resilience: Ultimate (Unit Rupture Work), MJ/m3 170
140
Resilience: Unit (Modulus of Resilience), kJ/m3 220
940
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 22
32
Strength to Weight: Bending, points 21
26
Thermal Shock Resistance, points 15
25

Alloy Composition

Aluminum (Al), % 0 to 0.3
0
Carbon (C), % 0 to 0.030
0 to 0.030
Chromium (Cr), % 13 to 15
24 to 26
Copper (Cu), % 0.75 to 1.5
0.2 to 0.8
Iron (Fe), % 56.1 to 67
57 to 65.6
Manganese (Mn), % 0 to 2.0
0 to 1.0
Molybdenum (Mo), % 0.75 to 1.5
2.5 to 3.5
Nickel (Ni), % 13 to 17
6.0 to 8.0
Nitrogen (N), % 0
0.24 to 0.32
Phosphorus (P), % 0 to 0.040
0 to 0.030
Silicon (Si), % 5.5 to 6.5
0 to 0.8
Sulfur (S), % 0 to 0.020
0 to 0.020
Tungsten (W), % 0
1.5 to 2.5