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S64512 Stainless Steel vs. S31254 Stainless Steel

Both S64512 stainless steel and S31254 stainless steel are iron alloys. They have 71% of their average alloy composition in common. There are 34 material properties with values for both materials. Properties with values for just one material (2, in this case) are not shown.

For each property being compared, the top bar is S64512 stainless steel and the bottom bar is S31254 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 330
190
Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 17
40
Fatigue Strength, MPa 540
290
Poisson's Ratio 0.28
0.28
Reduction in Area, % 34
56
Shear Modulus, GPa 76
80
Shear Strength, MPa 700
490
Tensile Strength: Ultimate (UTS), MPa 1140
720
Tensile Strength: Yield (Proof), MPa 890
330

Thermal Properties

Latent Heat of Fusion, J/g 270
300
Maximum Temperature: Corrosion, °C 390
420
Maximum Temperature: Mechanical, °C 750
1090
Melting Completion (Liquidus), °C 1460
1460
Melting Onset (Solidus), °C 1420
1420
Specific Heat Capacity, J/kg-K 470
460
Thermal Conductivity, W/m-K 28
14
Thermal Expansion, µm/m-K 10
17

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 3.6
2.0
Electrical Conductivity: Equal Weight (Specific), % IACS 4.1
2.3

Otherwise Unclassified Properties

Base Metal Price, % relative 10
28
Density, g/cm3 7.8
8.0
Embodied Carbon, kg CO2/kg material 3.3
5.5
Embodied Energy, MJ/kg 47
74
Embodied Water, L/kg 110
190

Common Calculations

PREN (Pitting Resistance) 18
44
Resilience: Ultimate (Unit Rupture Work), MJ/m3 180
240
Resilience: Unit (Modulus of Resilience), kJ/m3 2020
270
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
24
Strength to Weight: Axial, points 40
25
Strength to Weight: Bending, points 31
22
Thermal Diffusivity, mm2/s 7.5
3.8
Thermal Shock Resistance, points 42
15

Alloy Composition

Carbon (C), % 0.080 to 0.15
0 to 0.020
Chromium (Cr), % 11 to 12.5
19.5 to 20.5
Copper (Cu), % 0
0.5 to 1.0
Iron (Fe), % 80.6 to 84.7
51.4 to 56.3
Manganese (Mn), % 0.5 to 0.9
0 to 1.0
Molybdenum (Mo), % 1.5 to 2.0
6.0 to 6.5
Nickel (Ni), % 2.0 to 3.0
17.5 to 18.5
Nitrogen (N), % 0.010 to 0.050
0.18 to 0.22
Phosphorus (P), % 0 to 0.025
0 to 0.030
Silicon (Si), % 0 to 0.35
0 to 0.8
Sulfur (S), % 0 to 0.025
0 to 0.010
Vanadium (V), % 0.25 to 0.4
0