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S39274 Stainless Steel vs. S38815 Stainless Steel

Both S39274 stainless steel and S38815 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 S39274 stainless steel and the bottom bar is S38815 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

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

Thermal Properties

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

Otherwise Unclassified Properties

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

Common Calculations

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

Alloy Composition

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