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S30815 Stainless Steel vs. S32750 Stainless Steel

Both S30815 stainless steel and S32750 stainless steel are iron alloys. Both are furnished in the annealed condition. They have a moderately high 91% of their average alloy composition in common. There are 33 material properties with values for both materials. Properties with values for just one material (3, in this case) are not shown.

For each property being compared, the top bar is S30815 stainless steel and the bottom bar is S32750 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 190
270
Elastic (Young's, Tensile) Modulus, GPa 200
210
Elongation at Break, % 45
17
Fatigue Strength, MPa 320
360
Poisson's Ratio 0.28
0.27
Shear Modulus, GPa 77
81
Shear Strength, MPa 480
530
Tensile Strength: Ultimate (UTS), MPa 680
860
Tensile Strength: Yield (Proof), MPa 350
590

Thermal Properties

Latent Heat of Fusion, J/g 310
300
Maximum Temperature: Corrosion, °C 430
450
Maximum Temperature: Mechanical, °C 1020
1100
Melting Completion (Liquidus), °C 1400
1450
Melting Onset (Solidus), °C 1360
1400
Specific Heat Capacity, J/kg-K 490
480
Thermal Conductivity, W/m-K 15
15
Thermal Expansion, µm/m-K 17
12

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.0
2.2
Electrical Conductivity: Equal Weight (Specific), % IACS 2.4
2.5

Otherwise Unclassified Properties

Base Metal Price, % relative 17
21
Density, g/cm3 7.7
7.8
Embodied Carbon, kg CO2/kg material 3.3
4.1
Embodied Energy, MJ/kg 47
56
Embodied Water, L/kg 160
180

Common Calculations

PREN (Pitting Resistance) 24
43
Resilience: Ultimate (Unit Rupture Work), MJ/m3 260
130
Resilience: Unit (Modulus of Resilience), kJ/m3 310
860
Stiffness to Weight: Axial, points 14
15
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 25
31
Strength to Weight: Bending, points 22
26
Thermal Diffusivity, mm2/s 4.0
4.0
Thermal Shock Resistance, points 15
25

Alloy Composition

Carbon (C), % 0.050 to 0.1
0 to 0.030
Cerium (Ce), % 0.030 to 0.080
0
Chromium (Cr), % 20 to 22
24 to 26
Copper (Cu), % 0
0 to 0.5
Iron (Fe), % 62.8 to 68.4
58.1 to 66.8
Manganese (Mn), % 0 to 0.8
0 to 1.2
Molybdenum (Mo), % 0
3.0 to 5.0
Nickel (Ni), % 10 to 12
6.0 to 8.0
Nitrogen (N), % 0.14 to 0.2
0.24 to 0.32
Phosphorus (P), % 0 to 0.040
0 to 0.035
Silicon (Si), % 1.4 to 2.0
0 to 0.8
Sulfur (S), % 0 to 0.030
0 to 0.020