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S32950 Stainless Steel vs. S32750 Stainless Steel

Both S32950 stainless steel and S32750 stainless steel are iron alloys. Both are furnished in the annealed condition. They have a moderately high 95% of their average alloy composition in common.

For each property being compared, the top bar is S32950 stainless steel and the bottom bar is S32750 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 260
270
Elastic (Young's, Tensile) Modulus, GPa 200
210
Elongation at Break, % 17
17
Fatigue Strength, MPa 330
360
Poisson's Ratio 0.27
0.27
Rockwell C Hardness 28
28
Shear Modulus, GPa 80
81
Shear Strength, MPa 480
530
Tensile Strength: Ultimate (UTS), MPa 780
860
Tensile Strength: Yield (Proof), MPa 550
590

Thermal Properties

Latent Heat of Fusion, J/g 300
300
Maximum Temperature: Corrosion, °C 460
450
Maximum Temperature: Mechanical, °C 1100
1100
Melting Completion (Liquidus), °C 1430
1450
Melting Onset (Solidus), °C 1390
1400
Specific Heat Capacity, J/kg-K 480
480
Thermal Conductivity, W/m-K 16
15
Thermal Expansion, µm/m-K 13
12

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.1
2.2
Electrical Conductivity: Equal Weight (Specific), % IACS 2.5
2.5

Otherwise Unclassified Properties

Base Metal Price, % relative 17
21
Density, g/cm3 7.7
7.8
Embodied Carbon, kg CO2/kg material 3.4
4.1
Embodied Energy, MJ/kg 47
56
Embodied Water, L/kg 180
180

Common Calculations

PREN (Pitting Resistance) 37
43
Resilience: Ultimate (Unit Rupture Work), MJ/m3 120
130
Resilience: Unit (Modulus of Resilience), kJ/m3 730
860
Stiffness to Weight: Axial, points 15
15
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 28
31
Strength to Weight: Bending, points 24
26
Thermal Diffusivity, mm2/s 4.3
4.0
Thermal Shock Resistance, points 21
25

Alloy Composition

Carbon (C), % 0 to 0.030
0 to 0.030
Chromium (Cr), % 26 to 29
24 to 26
Copper (Cu), % 0
0 to 0.5
Iron (Fe), % 60.3 to 69.4
58.1 to 66.8
Manganese (Mn), % 0 to 2.0
0 to 1.2
Molybdenum (Mo), % 1.0 to 2.5
3.0 to 5.0
Nickel (Ni), % 3.5 to 5.2
6.0 to 8.0
Nitrogen (N), % 0.15 to 0.35
0.24 to 0.32
Phosphorus (P), % 0 to 0.035
0 to 0.035
Silicon (Si), % 0 to 0.6
0 to 0.8
Sulfur (S), % 0 to 0.010
0 to 0.020